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Diffstat (limited to 'gas/ecoff.c')
| -rw-r--r-- | gas/ecoff.c | 5308 |
1 files changed, 5308 insertions, 0 deletions
diff --git a/gas/ecoff.c b/gas/ecoff.c new file mode 100644 index 0000000..c3c9375 --- /dev/null +++ b/gas/ecoff.c @@ -0,0 +1,5308 @@ +/* ECOFF debugging support. + Copyright (C) 1993, 94, 95, 96, 97, 98 Free Software Foundation, Inc. + Contributed by Cygnus Support. + This file was put together by Ian Lance Taylor <ian@cygnus.com>. A + good deal of it comes directly from mips-tfile.c, by Michael + Meissner <meissner@osf.org>. + + This file is part of GAS. + + GAS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + GAS is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with GAS; see the file COPYING. If not, write to the Free + Software Foundation, 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ + +#include "as.h" + +/* This file is compiled conditionally for those targets which use + ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha + ECOFF). */ + +#ifdef ECOFF_DEBUGGING + +#include "coff/internal.h" +#include "coff/symconst.h" +#include "ecoff.h" +#include "aout/stab_gnu.h" + +#include <ctype.h> + +/* Why isn't this in coff/sym.h? */ +#define ST_RFDESCAPE 0xfff + +/* This file constructs the information used by the ECOFF debugging + format. It just builds a large block of data. + + We support both ECOFF style debugging and stabs debugging (the + stabs symbols are encapsulated in ECOFF symbols). This should let + us handle anything the compiler might throw at us. */ + +/* Here is a brief description of the MIPS ECOFF symbol table, by + Michael Meissner. The MIPS symbol table has the following pieces: + + Symbolic Header + | + +-- Auxiliary Symbols + | + +-- Dense number table + | + +-- Optimizer Symbols + | + +-- External Strings + | + +-- External Symbols + | + +-- Relative file descriptors + | + +-- File table + | + +-- Procedure table + | + +-- Line number table + | + +-- Local Strings + | + +-- Local Symbols + + The symbolic header points to each of the other tables, and also + contains the number of entries. It also contains a magic number + and MIPS compiler version number, such as 2.0. + + The auxiliary table is a series of 32 bit integers, that are + referenced as needed from the local symbol table. Unlike standard + COFF, the aux. information does not follow the symbol that uses + it, but rather is a separate table. In theory, this would allow + the MIPS compilers to collapse duplicate aux. entries, but I've not + noticed this happening with the 1.31 compiler suite. The different + types of aux. entries are: + + 1) dnLow: Low bound on array dimension. + + 2) dnHigh: High bound on array dimension. + + 3) isym: Index to the local symbol which is the start of the + function for the end of function first aux. entry. + + 4) width: Width of structures and bitfields. + + 5) count: Count of ranges for variant part. + + 6) rndx: A relative index into the symbol table. The relative + index field has two parts: rfd which is a pointer into the + relative file index table or ST_RFDESCAPE which says the next + aux. entry is the file number, and index: which is the pointer + into the local symbol within a given file table. This is for + things like references to types defined in another file. + + 7) Type information: This is like the COFF type bits, except it + is 32 bits instead of 16; they still have room to add new + basic types; and they can handle more than 6 levels of array, + pointer, function, etc. Each type information field contains + the following structure members: + + a) fBitfield: a bit that says this is a bitfield, and the + size in bits follows as the next aux. entry. + + b) continued: a bit that says the next aux. entry is a + continuation of the current type information (in case + there are more than 6 levels of array/ptr/function). + + c) bt: an integer containing the base type before adding + array, pointer, function, etc. qualifiers. The + current base types that I have documentation for are: + + btNil -- undefined + btAdr -- address - integer same size as ptr + btChar -- character + btUChar -- unsigned character + btShort -- short + btUShort -- unsigned short + btInt -- int + btUInt -- unsigned int + btLong -- long + btULong -- unsigned long + btFloat -- float (real) + btDouble -- Double (real) + btStruct -- Structure (Record) + btUnion -- Union (variant) + btEnum -- Enumerated + btTypedef -- defined via a typedef isymRef + btRange -- subrange of int + btSet -- pascal sets + btComplex -- fortran complex + btDComplex -- fortran double complex + btIndirect -- forward or unnamed typedef + btFixedDec -- Fixed Decimal + btFloatDec -- Float Decimal + btString -- Varying Length Character String + btBit -- Aligned Bit String + btPicture -- Picture + btVoid -- Void (MIPS cc revision >= 2.00) + + d) tq0 - tq5: type qualifier fields as needed. The + current type qualifier fields I have documentation for + are: + + tqNil -- no more qualifiers + tqPtr -- pointer + tqProc -- procedure + tqArray -- array + tqFar -- 8086 far pointers + tqVol -- volatile + + + The dense number table is used in the front ends, and disappears by + the time the .o is created. + + With the 1.31 compiler suite, the optimization symbols don't seem + to be used as far as I can tell. + + The linker is the first entity that creates the relative file + descriptor table, and I believe it is used so that the individual + file table pointers don't have to be rewritten when the objects are + merged together into the program file. + + Unlike COFF, the basic symbol & string tables are split into + external and local symbols/strings. The relocation information + only goes off of the external symbol table, and the debug + information only goes off of the internal symbol table. The + external symbols can have links to an appropriate file index and + symbol within the file to give it the appropriate type information. + Because of this, the external symbols are actually larger than the + internal symbols (to contain the link information), and contain the + local symbol structure as a member, though this member is not the + first member of the external symbol structure (!). I suspect this + split is to make strip easier to deal with. + + Each file table has offsets for where the line numbers, local + strings, local symbols, and procedure table starts from within the + global tables, and the indexs are reset to 0 for each of those + tables for the file. + + The procedure table contains the binary equivalents of the .ent + (start of the function address), .frame (what register is the + virtual frame pointer, constant offset from the register to obtain + the VFP, and what register holds the return address), .mask/.fmask + (bitmask of saved registers, and where the first register is stored + relative to the VFP) assembler directives. It also contains the + low and high bounds of the line numbers if debugging is turned on. + + The line number table is a compressed form of the normal COFF line + table. Each line number entry is either 1 or 3 bytes long, and + contains a signed delta from the previous line, and an unsigned + count of the number of instructions this statement takes. + + The local symbol table contains the following fields: + + 1) iss: index to the local string table giving the name of the + symbol. + + 2) value: value of the symbol (address, register number, etc.). + + 3) st: symbol type. The current symbol types are: + + stNil -- Nuthin' special + stGlobal -- external symbol + stStatic -- static + stParam -- procedure argument + stLocal -- local variable + stLabel -- label + stProc -- External Procedure + stBlock -- beginning of block + stEnd -- end (of anything) + stMember -- member (of anything) + stTypedef -- type definition + stFile -- file name + stRegReloc -- register relocation + stForward -- forwarding address + stStaticProc -- Static procedure + stConstant -- const + + 4) sc: storage class. The current storage classes are: + + scText -- text symbol + scData -- initialized data symbol + scBss -- un-initialized data symbol + scRegister -- value of symbol is register number + scAbs -- value of symbol is absolute + scUndefined -- who knows? + scCdbLocal -- variable's value is IN se->va.?? + scBits -- this is a bit field + scCdbSystem -- value is IN debugger's address space + scRegImage -- register value saved on stack + scInfo -- symbol contains debugger information + scUserStruct -- addr in struct user for current process + scSData -- load time only small data + scSBss -- load time only small common + scRData -- load time only read only data + scVar -- Var parameter (fortranpascal) + scCommon -- common variable + scSCommon -- small common + scVarRegister -- Var parameter in a register + scVariant -- Variant record + scSUndefined -- small undefined(external) data + scInit -- .init section symbol + + 5) index: pointer to a local symbol or aux. entry. + + + + For the following program: + + #include <stdio.h> + + main(){ + printf("Hello World!\n"); + return 0; + } + + Mips-tdump produces the following information: + + Global file header: + magic number 0x162 + # sections 2 + timestamp 645311799, Wed Jun 13 17:16:39 1990 + symbolic header offset 284 + symbolic header size 96 + optional header 56 + flags 0x0 + + Symbolic header, magic number = 0x7009, vstamp = 1.31: + + Info Offset Number Bytes + ==== ====== ====== ===== + + Line numbers 380 4 4 [13] + Dense numbers 0 0 0 + Procedures Tables 384 1 52 + Local Symbols 436 16 192 + Optimization Symbols 0 0 0 + Auxiliary Symbols 628 39 156 + Local Strings 784 80 80 + External Strings 864 144 144 + File Tables 1008 2 144 + Relative Files 0 0 0 + External Symbols 1152 20 320 + + File #0, "hello2.c" + + Name index = 1 Readin = No + Merge = No Endian = LITTLE + Debug level = G2 Language = C + Adr = 0x00000000 + + Info Start Number Size Offset + ==== ===== ====== ==== ====== + Local strings 0 15 15 784 + Local symbols 0 6 72 436 + Line numbers 0 13 13 380 + Optimization symbols 0 0 0 0 + Procedures 0 1 52 384 + Auxiliary symbols 0 14 56 628 + Relative Files 0 0 0 0 + + There are 6 local symbols, starting at 436 + + Symbol# 0: "hello2.c" + End+1 symbol = 6 + String index = 1 + Storage class = Text Index = 6 + Symbol type = File Value = 0 + + Symbol# 1: "main" + End+1 symbol = 5 + Type = int + String index = 10 + Storage class = Text Index = 12 + Symbol type = Proc Value = 0 + + Symbol# 2: "" + End+1 symbol = 4 + String index = 0 + Storage class = Text Index = 4 + Symbol type = Block Value = 8 + + Symbol# 3: "" + First symbol = 2 + String index = 0 + Storage class = Text Index = 2 + Symbol type = End Value = 28 + + Symbol# 4: "main" + First symbol = 1 + String index = 10 + Storage class = Text Index = 1 + Symbol type = End Value = 52 + + Symbol# 5: "hello2.c" + First symbol = 0 + String index = 1 + Storage class = Text Index = 0 + Symbol type = End Value = 0 + + There are 14 auxiliary table entries, starting at 628. + + * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] + * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0] + * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0] + * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] + * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0] + * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0] + * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0] + * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0] + * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0] + * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0] + * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0] + #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0] + #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] + + There are 1 procedure descriptor entries, starting at 0. + + Procedure descriptor 0: + Name index = 10 Name = "main" + .mask 0x80000000,-4 .fmask 0x00000000,0 + .frame $29,24,$31 + Opt. start = -1 Symbols start = 1 + First line # = 3 Last line # = 6 + Line Offset = 0 Address = 0x00000000 + + There are 4 bytes holding line numbers, starting at 380. + Line 3, delta 0, count 2 + Line 4, delta 1, count 3 + Line 5, delta 1, count 2 + Line 6, delta 1, count 6 + + File #1, "/usr/include/stdio.h" + + Name index = 1 Readin = No + Merge = Yes Endian = LITTLE + Debug level = G2 Language = C + Adr = 0x00000000 + + Info Start Number Size Offset + ==== ===== ====== ==== ====== + Local strings 15 65 65 799 + Local symbols 6 10 120 508 + Line numbers 0 0 0 380 + Optimization symbols 0 0 0 0 + Procedures 1 0 0 436 + Auxiliary symbols 14 25 100 684 + Relative Files 0 0 0 0 + + There are 10 local symbols, starting at 442 + + Symbol# 0: "/usr/include/stdio.h" + End+1 symbol = 10 + String index = 1 + Storage class = Text Index = 10 + Symbol type = File Value = 0 + + Symbol# 1: "_iobuf" + End+1 symbol = 9 + String index = 22 + Storage class = Info Index = 9 + Symbol type = Block Value = 20 + + Symbol# 2: "_cnt" + Type = int + String index = 29 + Storage class = Info Index = 4 + Symbol type = Member Value = 0 + + Symbol# 3: "_ptr" + Type = ptr to char + String index = 34 + Storage class = Info Index = 15 + Symbol type = Member Value = 32 + + Symbol# 4: "_base" + Type = ptr to char + String index = 39 + Storage class = Info Index = 16 + Symbol type = Member Value = 64 + + Symbol# 5: "_bufsiz" + Type = int + String index = 45 + Storage class = Info Index = 4 + Symbol type = Member Value = 96 + + Symbol# 6: "_flag" + Type = short + String index = 53 + Storage class = Info Index = 3 + Symbol type = Member Value = 128 + + Symbol# 7: "_file" + Type = char + String index = 59 + Storage class = Info Index = 2 + Symbol type = Member Value = 144 + + Symbol# 8: "" + First symbol = 1 + String index = 0 + Storage class = Info Index = 1 + Symbol type = End Value = 0 + + Symbol# 9: "/usr/include/stdio.h" + First symbol = 0 + String index = 1 + Storage class = Text Index = 0 + Symbol type = End Value = 0 + + There are 25 auxiliary table entries, starting at 642. + + * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f] + #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] + #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] + * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0] + * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1] + * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] + * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4] + * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] + * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0] + * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0] + * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] + + There are 0 procedure descriptor entries, starting at 1. + + There are 20 external symbols, starting at 1152 + + Symbol# 0: "_iob" + Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 } + String index = 0 Ifd = 1 + Storage class = Nil Index = 17 + Symbol type = Global Value = 60 + + Symbol# 1: "fopen" + String index = 5 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 2: "fdopen" + String index = 11 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 3: "freopen" + String index = 18 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 4: "popen" + String index = 26 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 5: "tmpfile" + String index = 32 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 6: "ftell" + String index = 40 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 7: "rewind" + String index = 46 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 8: "setbuf" + String index = 53 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 9: "setbuffer" + String index = 60 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 10: "setlinebuf" + String index = 70 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 11: "fgets" + String index = 81 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 12: "gets" + String index = 87 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 13: "ctermid" + String index = 92 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 14: "cuserid" + String index = 100 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 15: "tempnam" + String index = 108 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 16: "tmpnam" + String index = 116 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 17: "sprintf" + String index = 123 Ifd = 1 + Storage class = Nil Index = 1048575 + Symbol type = Proc Value = 0 + + Symbol# 18: "main" + Type = int + String index = 131 Ifd = 0 + Storage class = Text Index = 1 + Symbol type = Proc Value = 0 + + Symbol# 19: "printf" + String index = 136 Ifd = 0 + Storage class = Undefined Index = 1048575 + Symbol type = Proc Value = 0 + + The following auxiliary table entries were unused: + + #0 0 0x00000000 void + #2 8 0x00000008 char + #3 16 0x00000010 short + #4 24 0x00000018 int + #5 32 0x00000020 long + #6 40 0x00000028 float + #7 44 0x0000002c double + #8 12 0x0000000c unsigned char + #9 20 0x00000014 unsigned short + #10 28 0x0000001c unsigned int + #11 36 0x00000024 unsigned long + #14 0 0x00000000 void + #15 24 0x00000018 int + #19 32 0x00000020 long + #20 40 0x00000028 float + #21 44 0x0000002c double + #22 12 0x0000000c unsigned char + #23 20 0x00000014 unsigned short + #24 28 0x0000001c unsigned int + #25 36 0x00000024 unsigned long + #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 } +*/ + +/* Redefinition of of storage classes as an enumeration for better + debugging. */ + +typedef enum sc { + sc_Nil = scNil, /* no storage class */ + sc_Text = scText, /* text symbol */ + sc_Data = scData, /* initialized data symbol */ + sc_Bss = scBss, /* un-initialized data symbol */ + sc_Register = scRegister, /* value of symbol is register number */ + sc_Abs = scAbs, /* value of symbol is absolute */ + sc_Undefined = scUndefined, /* who knows? */ + sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */ + sc_Bits = scBits, /* this is a bit field */ + sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */ + sc_RegImage = scRegImage, /* register value saved on stack */ + sc_Info = scInfo, /* symbol contains debugger information */ + sc_UserStruct = scUserStruct, /* addr in struct user for current process */ + sc_SData = scSData, /* load time only small data */ + sc_SBss = scSBss, /* load time only small common */ + sc_RData = scRData, /* load time only read only data */ + sc_Var = scVar, /* Var parameter (fortran,pascal) */ + sc_Common = scCommon, /* common variable */ + sc_SCommon = scSCommon, /* small common */ + sc_VarRegister = scVarRegister, /* Var parameter in a register */ + sc_Variant = scVariant, /* Variant record */ + sc_SUndefined = scSUndefined, /* small undefined(external) data */ + sc_Init = scInit, /* .init section symbol */ + sc_Max = scMax /* Max storage class+1 */ +} sc_t; + +/* Redefinition of symbol type. */ + +typedef enum st { + st_Nil = stNil, /* Nuthin' special */ + st_Global = stGlobal, /* external symbol */ + st_Static = stStatic, /* static */ + st_Param = stParam, /* procedure argument */ + st_Local = stLocal, /* local variable */ + st_Label = stLabel, /* label */ + st_Proc = stProc, /* " " Procedure */ + st_Block = stBlock, /* beginning of block */ + st_End = stEnd, /* end (of anything) */ + st_Member = stMember, /* member (of anything - struct/union/enum */ + st_Typedef = stTypedef, /* type definition */ + st_File = stFile, /* file name */ + st_RegReloc = stRegReloc, /* register relocation */ + st_Forward = stForward, /* forwarding address */ + st_StaticProc = stStaticProc, /* load time only static procs */ + st_Constant = stConstant, /* const */ + st_Str = stStr, /* string */ + st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */ + st_Expr = stExpr, /* 2+2 vs. 4 */ + st_Type = stType, /* post-coercion SER */ + st_Max = stMax /* max type+1 */ +} st_t; + +/* Redefinition of type qualifiers. */ + +typedef enum tq { + tq_Nil = tqNil, /* bt is what you see */ + tq_Ptr = tqPtr, /* pointer */ + tq_Proc = tqProc, /* procedure */ + tq_Array = tqArray, /* duh */ + tq_Far = tqFar, /* longer addressing - 8086/8 land */ + tq_Vol = tqVol, /* volatile */ + tq_Max = tqMax /* Max type qualifier+1 */ +} tq_t; + +/* Redefinition of basic types. */ + +typedef enum bt { + bt_Nil = btNil, /* undefined */ + bt_Adr = btAdr, /* address - integer same size as pointer */ + bt_Char = btChar, /* character */ + bt_UChar = btUChar, /* unsigned character */ + bt_Short = btShort, /* short */ + bt_UShort = btUShort, /* unsigned short */ + bt_Int = btInt, /* int */ + bt_UInt = btUInt, /* unsigned int */ + bt_Long = btLong, /* long */ + bt_ULong = btULong, /* unsigned long */ + bt_Float = btFloat, /* float (real) */ + bt_Double = btDouble, /* Double (real) */ + bt_Struct = btStruct, /* Structure (Record) */ + bt_Union = btUnion, /* Union (variant) */ + bt_Enum = btEnum, /* Enumerated */ + bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */ + bt_Range = btRange, /* subrange of int */ + bt_Set = btSet, /* pascal sets */ + bt_Complex = btComplex, /* fortran complex */ + bt_DComplex = btDComplex, /* fortran double complex */ + bt_Indirect = btIndirect, /* forward or unnamed typedef */ + bt_FixedDec = btFixedDec, /* Fixed Decimal */ + bt_FloatDec = btFloatDec, /* Float Decimal */ + bt_String = btString, /* Varying Length Character String */ + bt_Bit = btBit, /* Aligned Bit String */ + bt_Picture = btPicture, /* Picture */ + bt_Void = btVoid, /* Void */ + bt_Max = btMax /* Max basic type+1 */ +} bt_t; + +#define N_TQ itqMax + +/* States for whether to hash type or not. */ +typedef enum hash_state { + hash_no = 0, /* don't hash type */ + hash_yes = 1, /* ok to hash type, or use previous hash */ + hash_record = 2 /* ok to record hash, but don't use prev. */ +} hash_state_t; + +/* Types of different sized allocation requests. */ +enum alloc_type { + alloc_type_none, /* dummy value */ + alloc_type_scope, /* nested scopes linked list */ + alloc_type_vlinks, /* glue linking pages in varray */ + alloc_type_shash, /* string hash element */ + alloc_type_thash, /* type hash element */ + alloc_type_tag, /* struct/union/tag element */ + alloc_type_forward, /* element to hold unknown tag */ + alloc_type_thead, /* head of type hash list */ + alloc_type_varray, /* general varray allocation */ + alloc_type_lineno, /* line number list */ + alloc_type_last /* last+1 element for array bounds */ +}; + +/* Types of auxiliary type information. */ +enum aux_type { + aux_tir, /* TIR type information */ + aux_rndx, /* relative index into symbol table */ + aux_dnLow, /* low dimension */ + aux_dnHigh, /* high dimension */ + aux_isym, /* symbol table index (end of proc) */ + aux_iss, /* index into string space (not used) */ + aux_width, /* width for non-default sized struc fields */ + aux_count /* count of ranges for variant arm */ +}; + +/* Structures to provide n-number of virtual arrays, each of which can + grow linearly, and which are written in the object file as + sequential pages. On systems with a BSD malloc, the + MAX_CLUSTER_PAGES should be 1 less than a power of two, since + malloc adds it's overhead, and rounds up to the next power of 2. + Pages are linked together via a linked list. + + If PAGE_SIZE is > 4096, the string length in the shash_t structure + can't be represented (assuming there are strings > 4096 bytes). */ + +/* FIXME: Yes, there can be such strings while emitting C++ class debug + info. Templates are the offender here, the test case in question + having a mangled class name of + + t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\ + 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey + + Repeat that a couple dozen times while listing the class members and + you've got strings over 4k. Hack around this for now by increasing + the page size. A proper solution would abandon this structure scheme + certainly for very large strings, and possibly entirely. */ + +#ifndef PAGE_SIZE +#define PAGE_SIZE (8*1024) /* size of varray pages */ +#endif + +#define PAGE_USIZE ((unsigned long) PAGE_SIZE) + +#ifndef MAX_CLUSTER_PAGES /* # pages to get from system */ +#define MAX_CLUSTER_PAGES 63 +#endif + +/* Linked list connecting separate page allocations. */ +typedef struct vlinks { + struct vlinks *prev; /* previous set of pages */ + struct vlinks *next; /* next set of pages */ + union page *datum; /* start of page */ + unsigned long start_index; /* starting index # of page */ +} vlinks_t; + + +/* Virtual array header. */ +typedef struct varray { + vlinks_t *first; /* first page link */ + vlinks_t *last; /* last page link */ + unsigned long num_allocated; /* # objects allocated */ + unsigned short object_size; /* size in bytes of each object */ + unsigned short objects_per_page; /* # objects that can fit on a page */ + unsigned short objects_last_page; /* # objects allocated on last page */ +} varray_t; + +#ifndef MALLOC_CHECK +#define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type)) +#else +#define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE) +#endif + +#define INIT_VARRAY(type) { /* macro to initialize a varray */ \ + (vlinks_t *)0, /* first */ \ + (vlinks_t *)0, /* last */ \ + 0, /* num_allocated */ \ + sizeof (type), /* object_size */ \ + OBJECTS_PER_PAGE (type), /* objects_per_page */ \ + OBJECTS_PER_PAGE (type), /* objects_last_page */ \ +} + + +/* Master type for indexes within the symbol table. */ +typedef unsigned long symint_t; + + +/* Linked list support for nested scopes (file, block, structure, etc.). */ +typedef struct scope { + struct scope *prev; /* previous scope level */ + struct scope *free; /* free list pointer */ + struct localsym *lsym; /* pointer to local symbol node */ + st_t type; /* type of the node */ +} scope_t; + + +/* For a local symbol we store a gas symbol as well as the debugging + information we generate. The gas symbol will be NULL if this is + only a debugging symbol. */ +typedef struct localsym { + const char *name; /* symbol name */ + symbolS *as_sym; /* symbol as seen by gas */ + bfd_vma addend; /* addend to as_sym value */ + struct efdr *file_ptr; /* file pointer */ + struct ecoff_proc *proc_ptr; /* proc pointer */ + struct localsym *begin_ptr; /* symbol at start of block */ + struct ecoff_aux *index_ptr; /* index value to be filled in */ + struct forward *forward_ref; /* forward references to this symbol */ + long sym_index; /* final symbol index */ + EXTR ecoff_sym; /* ECOFF debugging symbol */ +} localsym_t; + + +/* For aux information we keep the type and the data. */ +typedef struct ecoff_aux { + enum aux_type type; /* aux type */ + AUXU data; /* aux data */ +} aux_t; + +/* For a procedure we store the gas symbol as well as the PDR + debugging information. */ +typedef struct ecoff_proc { + localsym_t *sym; /* associated symbol */ + PDR pdr; /* ECOFF debugging info */ +} proc_t; + +/* Number of proc_t structures allocated. */ +static unsigned long proc_cnt; + + +/* Forward reference list for tags referenced, but not yet defined. */ +typedef struct forward { + struct forward *next; /* next forward reference */ + struct forward *free; /* free list pointer */ + aux_t *ifd_ptr; /* pointer to store file index */ + aux_t *index_ptr; /* pointer to store symbol index */ +} forward_t; + + +/* Linked list support for tags. The first tag in the list is always + the current tag for that block. */ +typedef struct tag { + struct tag *free; /* free list pointer */ + struct shash *hash_ptr; /* pointer to the hash table head */ + struct tag *same_name; /* tag with same name in outer scope */ + struct tag *same_block; /* next tag defined in the same block. */ + struct forward *forward_ref; /* list of forward references */ + bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */ + symint_t ifd; /* file # tag defined in */ + localsym_t *sym; /* file's local symbols */ +} tag_t; + + +/* Head of a block's linked list of tags. */ +typedef struct thead { + struct thead *prev; /* previous block */ + struct thead *free; /* free list pointer */ + struct tag *first_tag; /* first tag in block defined */ +} thead_t; + + +/* Union containing pointers to each the small structures which are freed up. */ +typedef union small_free { + scope_t *f_scope; /* scope structure */ + thead_t *f_thead; /* tag head structure */ + tag_t *f_tag; /* tag element structure */ + forward_t *f_forward; /* forward tag reference */ +} small_free_t; + + +/* String hash table entry. */ + +typedef struct shash { + char *string; /* string we are hashing */ + symint_t indx; /* index within string table */ + EXTR *esym_ptr; /* global symbol pointer */ + localsym_t *sym_ptr; /* local symbol pointer */ + localsym_t *end_ptr; /* symbol pointer to end block */ + tag_t *tag_ptr; /* tag pointer */ + proc_t *proc_ptr; /* procedure descriptor pointer */ +} shash_t; + + +/* Type hash table support. The size of the hash table must fit + within a page with the other extended file descriptor information. + Because unique types which are hashed are fewer in number than + strings, we use a smaller hash value. */ + +#define HASHBITS 30 + +#ifndef THASH_SIZE +#define THASH_SIZE 113 +#endif + +typedef struct thash { + struct thash *next; /* next hash value */ + AUXU type; /* type we are hashing */ + symint_t indx; /* index within string table */ +} thash_t; + + +/* Extended file descriptor that contains all of the support necessary + to add things to each file separately. */ +typedef struct efdr { + FDR fdr; /* File header to be written out */ + FDR *orig_fdr; /* original file header */ + char *name; /* filename */ + int fake; /* whether this is faked .file */ + symint_t void_type; /* aux. pointer to 'void' type */ + symint_t int_type; /* aux. pointer to 'int' type */ + scope_t *cur_scope; /* current nested scopes */ + symint_t file_index; /* current file number */ + int nested_scopes; /* # nested scopes */ + varray_t strings; /* local strings */ + varray_t symbols; /* local symbols */ + varray_t procs; /* procedures */ + varray_t aux_syms; /* auxiliary symbols */ + struct efdr *next_file; /* next file descriptor */ + /* string/type hash tables */ + struct hash_control *str_hash; /* string hash table */ + thash_t *thash_head[THASH_SIZE]; +} efdr_t; + +/* Pre-initialized extended file structure. */ +static const efdr_t init_file = +{ + { /* FDR structure */ + 0, /* adr: memory address of beginning of file */ + 0, /* rss: file name (of source, if known) */ + 0, /* issBase: file's string space */ + 0, /* cbSs: number of bytes in the ss */ + 0, /* isymBase: beginning of symbols */ + 0, /* csym: count file's of symbols */ + 0, /* ilineBase: file's line symbols */ + 0, /* cline: count of file's line symbols */ + 0, /* ioptBase: file's optimization entries */ + 0, /* copt: count of file's optimization entries */ + 0, /* ipdFirst: start of procedures for this file */ + 0, /* cpd: count of procedures for this file */ + 0, /* iauxBase: file's auxiliary entries */ + 0, /* caux: count of file's auxiliary entries */ + 0, /* rfdBase: index into the file indirect table */ + 0, /* crfd: count file indirect entries */ + langC, /* lang: language for this file */ + 1, /* fMerge: whether this file can be merged */ + 0, /* fReadin: true if read in (not just created) */ + TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */ + GLEVEL_2, /* glevel: level this file was compiled with */ + 0, /* reserved: reserved for future use */ + 0, /* cbLineOffset: byte offset from header for this file ln's */ + 0, /* cbLine: size of lines for this file */ + }, + + (FDR *)0, /* orig_fdr: original file header pointer */ + (char *)0, /* name: pointer to filename */ + 0, /* fake: whether this is a faked .file */ + 0, /* void_type: ptr to aux node for void type */ + 0, /* int_type: ptr to aux node for int type */ + (scope_t *)0, /* cur_scope: current scope being processed */ + 0, /* file_index: current file # */ + 0, /* nested_scopes: # nested scopes */ + INIT_VARRAY (char), /* strings: local string varray */ + INIT_VARRAY (localsym_t), /* symbols: local symbols varray */ + INIT_VARRAY (proc_t), /* procs: procedure varray */ + INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */ + + (struct efdr *)0, /* next_file: next file structure */ + + (struct hash_control *)0, /* str_hash: string hash table */ + { 0 }, /* thash_head: type hash table */ +}; + + +static efdr_t *first_file; /* first file descriptor */ +static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */ + + +/* Line number information is kept in a list until the assembly is + finished. */ +typedef struct lineno_list { + struct lineno_list *next; /* next element in list */ + efdr_t *file; /* file this line is in */ + proc_t *proc; /* procedure this line is in */ + fragS *frag; /* fragment this line number is in */ + unsigned long paddr; /* offset within fragment */ + long lineno; /* actual line number */ +} lineno_list_t; + +static lineno_list_t *first_lineno; +static lineno_list_t *last_lineno; +static lineno_list_t **last_lineno_ptr = &first_lineno; + +/* Sometimes there will be some .loc statements before a .ent. We + keep them in this list so that we can fill in the procedure pointer + after we see the .ent. */ +static lineno_list_t *noproc_lineno; + +/* Union of various things that are held in pages. */ +typedef union page { + char byte [ PAGE_SIZE ]; + unsigned char ubyte [ PAGE_SIZE ]; + efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ]; + FDR ofile [ PAGE_SIZE / sizeof (FDR) ]; + proc_t proc [ PAGE_SIZE / sizeof (proc_t) ]; + localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ]; + aux_t aux [ PAGE_SIZE / sizeof (aux_t) ]; + DNR dense [ PAGE_SIZE / sizeof (DNR) ]; + scope_t scope [ PAGE_SIZE / sizeof (scope_t) ]; + vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ]; + shash_t shash [ PAGE_SIZE / sizeof (shash_t) ]; + thash_t thash [ PAGE_SIZE / sizeof (thash_t) ]; + tag_t tag [ PAGE_SIZE / sizeof (tag_t) ]; + forward_t forward [ PAGE_SIZE / sizeof (forward_t) ]; + thead_t thead [ PAGE_SIZE / sizeof (thead_t) ]; + lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ]; +} page_type; + + +/* Structure holding allocation information for small sized structures. */ +typedef struct alloc_info { + char *alloc_name; /* name of this allocation type (must be first) */ + page_type *cur_page; /* current page being allocated from */ + small_free_t free_list; /* current free list if any */ + int unallocated; /* number of elements unallocated on page */ + int total_alloc; /* total number of allocations */ + int total_free; /* total number of frees */ + int total_pages; /* total number of pages allocated */ +} alloc_info_t; + + +/* Type information collected together. */ +typedef struct type_info { + bt_t basic_type; /* basic type */ + int orig_type; /* original COFF-based type */ + int num_tq; /* # type qualifiers */ + int num_dims; /* # dimensions */ + int num_sizes; /* # sizes */ + int extra_sizes; /* # extra sizes not tied with dims */ + tag_t * tag_ptr; /* tag pointer */ + int bitfield; /* symbol is a bitfield */ + tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/ + symint_t dimensions [N_TQ]; /* dimensions for each array */ + symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of + struct/union/enum + bitfield size */ +} type_info_t; + +/* Pre-initialized type_info struct. */ +static const type_info_t type_info_init = { + bt_Nil, /* basic type */ + T_NULL, /* original COFF-based type */ + 0, /* # type qualifiers */ + 0, /* # dimensions */ + 0, /* # sizes */ + 0, /* sizes not tied with dims */ + NULL, /* ptr to tag */ + 0, /* bitfield */ + { /* type qualifiers */ + tq_Nil, + tq_Nil, + tq_Nil, + tq_Nil, + tq_Nil, + tq_Nil, + }, + { /* dimensions */ + 0, + 0, + 0, + 0, + 0, + 0 + }, + { /* sizes */ + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + }, +}; + +/* Global hash table for the tags table and global table for file + descriptors. */ + +static varray_t file_desc = INIT_VARRAY (efdr_t); + +static struct hash_control *tag_hash; + +/* Static types for int and void. Also, remember the last function's + type (which is set up when we encounter the declaration for the + function, and used when the end block for the function is emitted. */ + +static type_info_t int_type_info; +static type_info_t void_type_info; +static type_info_t last_func_type_info; +static symbolS *last_func_sym_value; + + +/* Convert COFF basic type to ECOFF basic type. The T_NULL type + really should use bt_Void, but this causes the current ecoff GDB to + issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS + 2.0) doesn't understand it, even though the compiler generates it. + Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler + suite, but for now go with what works. + + It would make sense for the .type and .scl directives to use the + ECOFF numbers directly, rather than using the COFF numbers and + mapping them. Unfortunately, this is historically what mips-tfile + expects, and changing gcc now would be a considerable pain (the + native compiler generates debugging information internally, rather + than via the assembler, so it will never use .type or .scl). */ + +static const bt_t map_coff_types[] = { + bt_Nil, /* T_NULL */ + bt_Nil, /* T_ARG */ + bt_Char, /* T_CHAR */ + bt_Short, /* T_SHORT */ + bt_Int, /* T_INT */ + bt_Long, /* T_LONG */ + bt_Float, /* T_FLOAT */ + bt_Double, /* T_DOUBLE */ + bt_Struct, /* T_STRUCT */ + bt_Union, /* T_UNION */ + bt_Enum, /* T_ENUM */ + bt_Enum, /* T_MOE */ + bt_UChar, /* T_UCHAR */ + bt_UShort, /* T_USHORT */ + bt_UInt, /* T_UINT */ + bt_ULong /* T_ULONG */ +}; + +/* Convert COFF storage class to ECOFF storage class. */ +static const sc_t map_coff_storage[] = { + sc_Nil, /* 0: C_NULL */ + sc_Abs, /* 1: C_AUTO auto var */ + sc_Undefined, /* 2: C_EXT external */ + sc_Data, /* 3: C_STAT static */ + sc_Register, /* 4: C_REG register */ + sc_Undefined, /* 5: C_EXTDEF ??? */ + sc_Text, /* 6: C_LABEL label */ + sc_Text, /* 7: C_ULABEL user label */ + sc_Info, /* 8: C_MOS member of struct */ + sc_Abs, /* 9: C_ARG argument */ + sc_Info, /* 10: C_STRTAG struct tag */ + sc_Info, /* 11: C_MOU member of union */ + sc_Info, /* 12: C_UNTAG union tag */ + sc_Info, /* 13: C_TPDEF typedef */ + sc_Data, /* 14: C_USTATIC ??? */ + sc_Info, /* 15: C_ENTAG enum tag */ + sc_Info, /* 16: C_MOE member of enum */ + sc_Register, /* 17: C_REGPARM register parameter */ + sc_Bits, /* 18; C_FIELD bitfield */ + sc_Nil, /* 19 */ + sc_Nil, /* 20 */ + sc_Nil, /* 21 */ + sc_Nil, /* 22 */ + sc_Nil, /* 23 */ + sc_Nil, /* 24 */ + sc_Nil, /* 25 */ + sc_Nil, /* 26 */ + sc_Nil, /* 27 */ + sc_Nil, /* 28 */ + sc_Nil, /* 29 */ + sc_Nil, /* 30 */ + sc_Nil, /* 31 */ + sc_Nil, /* 32 */ + sc_Nil, /* 33 */ + sc_Nil, /* 34 */ + sc_Nil, /* 35 */ + sc_Nil, /* 36 */ + sc_Nil, /* 37 */ + sc_Nil, /* 38 */ + sc_Nil, /* 39 */ + sc_Nil, /* 40 */ + sc_Nil, /* 41 */ + sc_Nil, /* 42 */ + sc_Nil, /* 43 */ + sc_Nil, /* 44 */ + sc_Nil, /* 45 */ + sc_Nil, /* 46 */ + sc_Nil, /* 47 */ + sc_Nil, /* 48 */ + sc_Nil, /* 49 */ + sc_Nil, /* 50 */ + sc_Nil, /* 51 */ + sc_Nil, /* 52 */ + sc_Nil, /* 53 */ + sc_Nil, /* 54 */ + sc_Nil, /* 55 */ + sc_Nil, /* 56 */ + sc_Nil, /* 57 */ + sc_Nil, /* 58 */ + sc_Nil, /* 59 */ + sc_Nil, /* 60 */ + sc_Nil, /* 61 */ + sc_Nil, /* 62 */ + sc_Nil, /* 63 */ + sc_Nil, /* 64 */ + sc_Nil, /* 65 */ + sc_Nil, /* 66 */ + sc_Nil, /* 67 */ + sc_Nil, /* 68 */ + sc_Nil, /* 69 */ + sc_Nil, /* 70 */ + sc_Nil, /* 71 */ + sc_Nil, /* 72 */ + sc_Nil, /* 73 */ + sc_Nil, /* 74 */ + sc_Nil, /* 75 */ + sc_Nil, /* 76 */ + sc_Nil, /* 77 */ + sc_Nil, /* 78 */ + sc_Nil, /* 79 */ + sc_Nil, /* 80 */ + sc_Nil, /* 81 */ + sc_Nil, /* 82 */ + sc_Nil, /* 83 */ + sc_Nil, /* 84 */ + sc_Nil, /* 85 */ + sc_Nil, /* 86 */ + sc_Nil, /* 87 */ + sc_Nil, /* 88 */ + sc_Nil, /* 89 */ + sc_Nil, /* 90 */ + sc_Nil, /* 91 */ + sc_Nil, /* 92 */ + sc_Nil, /* 93 */ + sc_Nil, /* 94 */ + sc_Nil, /* 95 */ + sc_Nil, /* 96 */ + sc_Nil, /* 97 */ + sc_Nil, /* 98 */ + sc_Nil, /* 99 */ + sc_Text, /* 100: C_BLOCK block start/end */ + sc_Text, /* 101: C_FCN function start/end */ + sc_Info, /* 102: C_EOS end of struct/union/enum */ + sc_Nil, /* 103: C_FILE file start */ + sc_Nil, /* 104: C_LINE line number */ + sc_Nil, /* 105: C_ALIAS combined type info */ + sc_Nil, /* 106: C_HIDDEN ??? */ +}; + +/* Convert COFF storage class to ECOFF symbol type. */ +static const st_t map_coff_sym_type[] = { + st_Nil, /* 0: C_NULL */ + st_Local, /* 1: C_AUTO auto var */ + st_Global, /* 2: C_EXT external */ + st_Static, /* 3: C_STAT static */ + st_Local, /* 4: C_REG register */ + st_Global, /* 5: C_EXTDEF ??? */ + st_Label, /* 6: C_LABEL label */ + st_Label, /* 7: C_ULABEL user label */ + st_Member, /* 8: C_MOS member of struct */ + st_Param, /* 9: C_ARG argument */ + st_Block, /* 10: C_STRTAG struct tag */ + st_Member, /* 11: C_MOU member of union */ + st_Block, /* 12: C_UNTAG union tag */ + st_Typedef, /* 13: C_TPDEF typedef */ + st_Static, /* 14: C_USTATIC ??? */ + st_Block, /* 15: C_ENTAG enum tag */ + st_Member, /* 16: C_MOE member of enum */ + st_Param, /* 17: C_REGPARM register parameter */ + st_Member, /* 18; C_FIELD bitfield */ + st_Nil, /* 19 */ + st_Nil, /* 20 */ + st_Nil, /* 21 */ + st_Nil, /* 22 */ + st_Nil, /* 23 */ + st_Nil, /* 24 */ + st_Nil, /* 25 */ + st_Nil, /* 26 */ + st_Nil, /* 27 */ + st_Nil, /* 28 */ + st_Nil, /* 29 */ + st_Nil, /* 30 */ + st_Nil, /* 31 */ + st_Nil, /* 32 */ + st_Nil, /* 33 */ + st_Nil, /* 34 */ + st_Nil, /* 35 */ + st_Nil, /* 36 */ + st_Nil, /* 37 */ + st_Nil, /* 38 */ + st_Nil, /* 39 */ + st_Nil, /* 40 */ + st_Nil, /* 41 */ + st_Nil, /* 42 */ + st_Nil, /* 43 */ + st_Nil, /* 44 */ + st_Nil, /* 45 */ + st_Nil, /* 46 */ + st_Nil, /* 47 */ + st_Nil, /* 48 */ + st_Nil, /* 49 */ + st_Nil, /* 50 */ + st_Nil, /* 51 */ + st_Nil, /* 52 */ + st_Nil, /* 53 */ + st_Nil, /* 54 */ + st_Nil, /* 55 */ + st_Nil, /* 56 */ + st_Nil, /* 57 */ + st_Nil, /* 58 */ + st_Nil, /* 59 */ + st_Nil, /* 60 */ + st_Nil, /* 61 */ + st_Nil, /* 62 */ + st_Nil, /* 63 */ + st_Nil, /* 64 */ + st_Nil, /* 65 */ + st_Nil, /* 66 */ + st_Nil, /* 67 */ + st_Nil, /* 68 */ + st_Nil, /* 69 */ + st_Nil, /* 70 */ + st_Nil, /* 71 */ + st_Nil, /* 72 */ + st_Nil, /* 73 */ + st_Nil, /* 74 */ + st_Nil, /* 75 */ + st_Nil, /* 76 */ + st_Nil, /* 77 */ + st_Nil, /* 78 */ + st_Nil, /* 79 */ + st_Nil, /* 80 */ + st_Nil, /* 81 */ + st_Nil, /* 82 */ + st_Nil, /* 83 */ + st_Nil, /* 84 */ + st_Nil, /* 85 */ + st_Nil, /* 86 */ + st_Nil, /* 87 */ + st_Nil, /* 88 */ + st_Nil, /* 89 */ + st_Nil, /* 90 */ + st_Nil, /* 91 */ + st_Nil, /* 92 */ + st_Nil, /* 93 */ + st_Nil, /* 94 */ + st_Nil, /* 95 */ + st_Nil, /* 96 */ + st_Nil, /* 97 */ + st_Nil, /* 98 */ + st_Nil, /* 99 */ + st_Block, /* 100: C_BLOCK block start/end */ + st_Proc, /* 101: C_FCN function start/end */ + st_End, /* 102: C_EOS end of struct/union/enum */ + st_File, /* 103: C_FILE file start */ + st_Nil, /* 104: C_LINE line number */ + st_Nil, /* 105: C_ALIAS combined type info */ + st_Nil, /* 106: C_HIDDEN ??? */ +}; + + +/* Keep track of different sized allocation requests. */ +static alloc_info_t alloc_counts[ (int)alloc_type_last ]; + +/* Record whether we have seen any debugging information. */ +int ecoff_debugging_seen = 0; + +/* Various statics. */ +static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */ +static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */ +static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */ +static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */ +static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */ +#ifdef ECOFF_DEBUG +static int debug = 0; /* trace functions */ +#endif +static int stabs_seen = 0; /* != 0 if stabs have been seen */ + +static int current_file_idx; +static const char *current_stabs_filename; + +/* Pseudo symbol to use when putting stabs into the symbol table. */ +#ifndef STABS_SYMBOL +#define STABS_SYMBOL "@stabs" +#endif + +static char stabs_symbol[] = STABS_SYMBOL; + +/* Prototypes for functions defined in this file. */ + +static void add_varray_page PARAMS ((varray_t *vp)); +static symint_t add_string PARAMS ((varray_t *vp, + struct hash_control *hash_tbl, + const char *str, + shash_t **ret_hash)); +static localsym_t *add_ecoff_symbol PARAMS ((const char *str, st_t type, + sc_t storage, symbolS *sym, + bfd_vma addend, symint_t value, + symint_t indx)); +static symint_t add_aux_sym_symint PARAMS ((symint_t aux_word)); +static symint_t add_aux_sym_rndx PARAMS ((int file_index, + symint_t sym_index)); +static symint_t add_aux_sym_tir PARAMS ((type_info_t *t, + hash_state_t state, + thash_t **hash_tbl)); +static tag_t *get_tag PARAMS ((const char *tag, localsym_t *sym, + bt_t basic_type)); +static void add_unknown_tag PARAMS ((tag_t *ptag)); +static void add_procedure PARAMS ((char *func)); +static void add_file PARAMS ((const char *file_name, int indx, int fake)); +#ifdef ECOFF_DEBUG +static char *sc_to_string PARAMS ((sc_t storage_class)); +static char *st_to_string PARAMS ((st_t symbol_type)); +#endif +static void mark_stabs PARAMS ((int)); +static char *ecoff_add_bytes PARAMS ((char **buf, char **bufend, + char *bufptr, unsigned long need)); +static unsigned long ecoff_padding_adjust + PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend, + unsigned long offset, char **bufptrptr)); +static unsigned long ecoff_build_lineno + PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend, + unsigned long offset, long *linecntptr)); +static unsigned long ecoff_build_symbols + PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend, + unsigned long offset)); +static unsigned long ecoff_build_procs + PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend, + unsigned long offset)); +static unsigned long ecoff_build_aux + PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend, + unsigned long offset)); +static unsigned long ecoff_build_strings PARAMS ((char **buf, char **bufend, + unsigned long offset, + varray_t *vp)); +static unsigned long ecoff_build_ss + PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend, + unsigned long offset)); +static unsigned long ecoff_build_fdr + PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend, + unsigned long offset)); +static void ecoff_setup_ext PARAMS ((void)); +static page_type *allocate_cluster PARAMS ((unsigned long npages)); +static page_type *allocate_page PARAMS ((void)); +static scope_t *allocate_scope PARAMS ((void)); +static void free_scope PARAMS ((scope_t *ptr)); +static vlinks_t *allocate_vlinks PARAMS ((void)); +static shash_t *allocate_shash PARAMS ((void)); +static thash_t *allocate_thash PARAMS ((void)); +static tag_t *allocate_tag PARAMS ((void)); +static void free_tag PARAMS ((tag_t *ptr)); +static forward_t *allocate_forward PARAMS ((void)); +static thead_t *allocate_thead PARAMS ((void)); +static void free_thead PARAMS ((thead_t *ptr)); +static lineno_list_t *allocate_lineno_list PARAMS ((void)); + +/* This function should be called when the assembler starts up. */ + +void +ecoff_read_begin_hook () +{ + tag_hash = hash_new (); + top_tag_head = allocate_thead (); + top_tag_head->first_tag = (tag_t *) NULL; + top_tag_head->free = (thead_t *) NULL; + top_tag_head->prev = cur_tag_head; + cur_tag_head = top_tag_head; +} + +/* This function should be called when a symbol is created. */ + +void +ecoff_symbol_new_hook (symbolP) + symbolS *symbolP; +{ + /* Make sure that we have a file pointer, but only if we have seen a + file. If we haven't seen a file, then this is a probably special + symbol created by md_begin which may required special handling at + some point. Creating a dummy file with a dummy name is certainly + wrong. */ + if (cur_file_ptr == (efdr_t *) NULL + && seen_at_least_1_file ()) + add_file ((const char *) NULL, 0, 1); + symbolP->ecoff_file = cur_file_ptr; + symbolP->ecoff_symbol = NULL; + symbolP->ecoff_extern_size = 0; +} + +/* Add a page to a varray object. */ + +static void +add_varray_page (vp) + varray_t *vp; /* varray to add page to */ +{ + vlinks_t *new_links = allocate_vlinks (); + +#ifdef MALLOC_CHECK + if (vp->object_size > 1) + new_links->datum = (page_type *) xcalloc (1, vp->object_size); + else +#endif + new_links->datum = allocate_page (); + + alloc_counts[(int)alloc_type_varray].total_alloc++; + alloc_counts[(int)alloc_type_varray].total_pages++; + + new_links->start_index = vp->num_allocated; + vp->objects_last_page = 0; + + if (vp->first == (vlinks_t *) NULL) /* first allocation? */ + vp->first = vp->last = new_links; + else + { /* 2nd or greater allocation */ + new_links->prev = vp->last; + vp->last->next = new_links; + vp->last = new_links; + } +} + +/* Add a string (and null pad) to one of the string tables. */ + +static symint_t +add_string (vp, hash_tbl, str, ret_hash) + varray_t *vp; /* string obstack */ + struct hash_control *hash_tbl; /* ptr to hash table */ + const char *str; /* string */ + shash_t **ret_hash; /* return hash pointer */ +{ + register unsigned long len = strlen (str); + register shash_t *hash_ptr; + + if (len >= PAGE_USIZE) + as_fatal (_("String too big (%lu bytes)"), len); + + hash_ptr = (shash_t *) hash_find (hash_tbl, str); + if (hash_ptr == (shash_t *) NULL) + { + register const char *err; + + if (vp->objects_last_page + len >= PAGE_USIZE) + { + vp->num_allocated = + ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE; + add_varray_page (vp); + } + + hash_ptr = allocate_shash (); + hash_ptr->indx = vp->num_allocated; + + hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page]; + + vp->objects_last_page += len + 1; + vp->num_allocated += len + 1; + + strcpy (hash_ptr->string, str); + + err = hash_insert (hash_tbl, str, (char *) hash_ptr); + if (err) + as_fatal (_("Inserting \"%s\" into string hash table: %s"), + str, err); + } + + if (ret_hash != (shash_t **) NULL) + *ret_hash = hash_ptr; + + return hash_ptr->indx; +} + +/* Add debugging information for a symbol. */ + +static localsym_t * +add_ecoff_symbol (str, type, storage, sym_value, addend, value, indx) + const char *str; /* symbol name */ + st_t type; /* symbol type */ + sc_t storage; /* storage class */ + symbolS *sym_value; /* associated symbol. */ + bfd_vma addend; /* addend to sym_value. */ + symint_t value; /* value of symbol */ + symint_t indx; /* index to local/aux. syms */ +{ + localsym_t *psym; + register scope_t *pscope; + register thead_t *ptag_head; + register tag_t *ptag; + register tag_t *ptag_next; + register varray_t *vp; + register int scope_delta = 0; + shash_t *hash_ptr = (shash_t *) NULL; + + if (cur_file_ptr == (efdr_t *) NULL) + as_fatal (_("no current file pointer")); + + vp = &cur_file_ptr->symbols; + + if (vp->objects_last_page == vp->objects_per_page) + add_varray_page (vp); + + psym = &vp->last->datum->sym[ vp->objects_last_page++ ]; + + if (str == (const char *) NULL && sym_value != (symbolS *) NULL) + psym->name = S_GET_NAME (sym_value); + else + psym->name = str; + psym->as_sym = sym_value; + if (sym_value != (symbolS *) NULL) + sym_value->ecoff_symbol = psym; + psym->addend = addend; + psym->file_ptr = cur_file_ptr; + psym->proc_ptr = cur_proc_ptr; + psym->begin_ptr = (localsym_t *) NULL; + psym->index_ptr = (aux_t *) NULL; + psym->forward_ref = (forward_t *) NULL; + psym->sym_index = -1; + memset (&psym->ecoff_sym, 0, sizeof (EXTR)); + psym->ecoff_sym.asym.value = value; + psym->ecoff_sym.asym.st = (unsigned) type; + psym->ecoff_sym.asym.sc = (unsigned) storage; + psym->ecoff_sym.asym.index = indx; + + /* If there is an associated symbol, we wait until the end of the + assembly before deciding where to put the name (it may be just an + external symbol). Otherwise, this is just a debugging symbol and + the name should go with the current file. */ + if (sym_value == (symbolS *) NULL) + psym->ecoff_sym.asym.iss = ((str == (const char *) NULL) + ? 0 + : add_string (&cur_file_ptr->strings, + cur_file_ptr->str_hash, + str, + &hash_ptr)); + + ++vp->num_allocated; + + if (ECOFF_IS_STAB (&psym->ecoff_sym.asym)) + return psym; + + /* Save the symbol within the hash table if this is a static + item, and it has a name. */ + if (hash_ptr != (shash_t *) NULL + && (type == st_Global || type == st_Static || type == st_Label + || type == st_Proc || type == st_StaticProc)) + hash_ptr->sym_ptr = psym; + + /* push or pop a scope if appropriate. */ + switch (type) + { + default: + break; + + case st_File: /* beginning of file */ + case st_Proc: /* procedure */ + case st_StaticProc: /* static procedure */ + case st_Block: /* begin scope */ + pscope = allocate_scope (); + pscope->prev = cur_file_ptr->cur_scope; + pscope->lsym = psym; + pscope->type = type; + cur_file_ptr->cur_scope = pscope; + + if (type != st_File) + scope_delta = 1; + + /* For every block type except file, struct, union, or + enumeration blocks, push a level on the tag stack. We omit + file types, so that tags can span file boundaries. */ + if (type != st_File && storage != sc_Info) + { + ptag_head = allocate_thead (); + ptag_head->first_tag = 0; + ptag_head->prev = cur_tag_head; + cur_tag_head = ptag_head; + } + break; + + case st_End: + pscope = cur_file_ptr->cur_scope; + if (pscope == (scope_t *) NULL) + as_fatal (_("too many st_End's")); + else + { + st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st; + + psym->begin_ptr = pscope->lsym; + + if (begin_type != st_File) + scope_delta = -1; + + /* Except for file, structure, union, or enumeration end + blocks remove all tags created within this scope. */ + if (begin_type != st_File && storage != sc_Info) + { + ptag_head = cur_tag_head; + cur_tag_head = ptag_head->prev; + + for (ptag = ptag_head->first_tag; + ptag != (tag_t *) NULL; + ptag = ptag_next) + { + if (ptag->forward_ref != (forward_t *) NULL) + add_unknown_tag (ptag); + + ptag_next = ptag->same_block; + ptag->hash_ptr->tag_ptr = ptag->same_name; + free_tag (ptag); + } + + free_thead (ptag_head); + } + + cur_file_ptr->cur_scope = pscope->prev; + + /* block begin gets next sym #. This is set when we know + the symbol index value. */ + + /* Functions push two or more aux words as follows: + 1st word: index+1 of the end symbol (filled in later). + 2nd word: type of the function (plus any aux words needed). + Also, tie the external pointer back to the function begin symbol. */ + if (begin_type != st_File && begin_type != st_Block) + { + symint_t ty; + varray_t *svp = &cur_file_ptr->aux_syms; + + pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0); + pscope->lsym->index_ptr = + &svp->last->datum->aux[svp->objects_last_page - 1]; + ty = add_aux_sym_tir (&last_func_type_info, + hash_no, + &cur_file_ptr->thash_head[0]); + +/* This seems to be unnecessary. I'm not even sure what it is + * intended to do. It's from mips-tfile. + * if (last_func_sym_value != (symbolS *) NULL) + * { + * last_func_sym_value->ifd = cur_file_ptr->file_index; + * last_func_sym_value->index = ty; + * } + */ + } + + free_scope (pscope); + } + } + + cur_file_ptr->nested_scopes += scope_delta; + +#ifdef ECOFF_DEBUG + if (debug && type != st_File + && (debug > 2 || type == st_Block || type == st_End + || type == st_Proc || type == st_StaticProc)) + { + char *sc_str = sc_to_string (storage); + char *st_str = st_to_string (type); + int depth = cur_file_ptr->nested_scopes + (scope_delta < 0); + + fprintf (stderr, + "\tlsym\tv= %10ld, depth= %2d, sc= %-12s", + value, depth, sc_str); + + if (str_start && str_end_p1 - str_start > 0) + fprintf (stderr, " st= %-11s name= %.*s\n", st_str, str_end_p1 - str_start, str_start); + else + { + unsigned long len = strlen (st_str); + fprintf (stderr, " st= %.*s\n", len-1, st_str); + } + } +#endif + + return psym; +} + +/* Add an auxiliary symbol (passing a symint). This is actually used + for integral aux types, not just symints. */ + +static symint_t +add_aux_sym_symint (aux_word) + symint_t aux_word; /* auxiliary information word */ +{ + register varray_t *vp; + register aux_t *aux_ptr; + + if (cur_file_ptr == (efdr_t *) NULL) + as_fatal (_("no current file pointer")); + + vp = &cur_file_ptr->aux_syms; + + if (vp->objects_last_page == vp->objects_per_page) + add_varray_page (vp); + + aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; + aux_ptr->type = aux_isym; + aux_ptr->data.isym = aux_word; + + return vp->num_allocated++; +} + + +/* Add an auxiliary symbol (passing a file/symbol index combo). */ + +static symint_t +add_aux_sym_rndx (file_index, sym_index) + int file_index; + symint_t sym_index; +{ + register varray_t *vp; + register aux_t *aux_ptr; + + if (cur_file_ptr == (efdr_t *) NULL) + as_fatal (_("no current file pointer")); + + vp = &cur_file_ptr->aux_syms; + + if (vp->objects_last_page == vp->objects_per_page) + add_varray_page (vp); + + aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; + aux_ptr->type = aux_rndx; + aux_ptr->data.rndx.rfd = file_index; + aux_ptr->data.rndx.index = sym_index; + + return vp->num_allocated++; +} + +/* Add an auxiliary symbol (passing the basic type and possibly + type qualifiers). */ + +static symint_t +add_aux_sym_tir (t, state, hash_tbl) + type_info_t *t; /* current type information */ + hash_state_t state; /* whether to hash type or not */ + thash_t **hash_tbl; /* pointer to hash table to use */ +{ + register varray_t *vp; + register aux_t *aux_ptr; + static AUXU init_aux; + symint_t ret; + int i; + AUXU aux; + + if (cur_file_ptr == (efdr_t *) NULL) + as_fatal (_("no current file pointer")); + + vp = &cur_file_ptr->aux_syms; + + aux = init_aux; + aux.ti.bt = (int) t->basic_type; + aux.ti.continued = 0; + aux.ti.fBitfield = t->bitfield; + + aux.ti.tq0 = (int) t->type_qualifiers[0]; + aux.ti.tq1 = (int) t->type_qualifiers[1]; + aux.ti.tq2 = (int) t->type_qualifiers[2]; + aux.ti.tq3 = (int) t->type_qualifiers[3]; + aux.ti.tq4 = (int) t->type_qualifiers[4]; + aux.ti.tq5 = (int) t->type_qualifiers[5]; + + + /* For anything that adds additional information, we must not hash, + so check here, and reset our state. */ + + if (state != hash_no + && (t->type_qualifiers[0] == tq_Array + || t->type_qualifiers[1] == tq_Array + || t->type_qualifiers[2] == tq_Array + || t->type_qualifiers[3] == tq_Array + || t->type_qualifiers[4] == tq_Array + || t->type_qualifiers[5] == tq_Array + || t->basic_type == bt_Struct + || t->basic_type == bt_Union + || t->basic_type == bt_Enum + || t->bitfield + || t->num_dims > 0)) + state = hash_no; + + /* See if we can hash this type, and save some space, but some types + can't be hashed (because they contain arrays or continuations), + and others can be put into the hash list, but cannot use existing + types because other aux entries precede this one. */ + + if (state != hash_no) + { + register thash_t *hash_ptr; + register symint_t hi; + + hi = aux.isym & ((1 << HASHBITS) - 1); + hi %= THASH_SIZE; + + for (hash_ptr = hash_tbl[hi]; + hash_ptr != (thash_t *)0; + hash_ptr = hash_ptr->next) + { + if (aux.isym == hash_ptr->type.isym) + break; + } + + if (hash_ptr != (thash_t *) NULL && state == hash_yes) + return hash_ptr->indx; + + if (hash_ptr == (thash_t *) NULL) + { + hash_ptr = allocate_thash (); + hash_ptr->next = hash_tbl[hi]; + hash_ptr->type = aux; + hash_ptr->indx = vp->num_allocated; + hash_tbl[hi] = hash_ptr; + } + } + + /* Everything is set up, add the aux symbol. */ + if (vp->objects_last_page == vp->objects_per_page) + add_varray_page (vp); + + aux_ptr = &vp->last->datum->aux[ vp->objects_last_page++ ]; + aux_ptr->type = aux_tir; + aux_ptr->data = aux; + + ret = vp->num_allocated++; + + /* Add bitfield length if it exists. + + NOTE: Mips documentation claims bitfield goes at the end of the + AUX record, but the DECstation compiler emits it here. + (This would only make a difference for enum bitfields.) + + Also note: We use the last size given since gcc may emit 2 + for an enum bitfield. */ + + if (t->bitfield) + (void) add_aux_sym_symint ((symint_t)t->sizes[t->num_sizes-1]); + + + /* Add tag information if needed. Structure, union, and enum + references add 2 aux symbols: a [file index, symbol index] + pointer to the structure type, and the current file index. */ + + if (t->basic_type == bt_Struct + || t->basic_type == bt_Union + || t->basic_type == bt_Enum) + { + register symint_t file_index = t->tag_ptr->ifd; + register localsym_t *sym = t->tag_ptr->sym; + register forward_t *forward_ref = allocate_forward (); + + if (sym != (localsym_t *) NULL) + { + forward_ref->next = sym->forward_ref; + sym->forward_ref = forward_ref; + } + else + { + forward_ref->next = t->tag_ptr->forward_ref; + t->tag_ptr->forward_ref = forward_ref; + } + + (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil); + forward_ref->index_ptr + = &vp->last->datum->aux[ vp->objects_last_page - 1]; + + (void) add_aux_sym_symint (file_index); + forward_ref->ifd_ptr + = &vp->last->datum->aux[ vp->objects_last_page - 1]; + } + + /* Add information about array bounds if they exist. */ + for (i = 0; i < t->num_dims; i++) + { + (void) add_aux_sym_rndx (ST_RFDESCAPE, + cur_file_ptr->int_type); + + (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/ + (void) add_aux_sym_symint ((symint_t) 0); /* low bound */ + (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/ + (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */ + ? 0 + : (t->sizes[i] * 8) / t->dimensions[i]); + }; + + /* NOTE: Mips documentation claims that the bitfield width goes here. + But it needs to be emitted earlier. */ + + return ret; +} + +/* Add a tag to the tag table (unless it already exists). */ + +static tag_t * +get_tag (tag, sym, basic_type) + const char *tag; /* tag name */ + localsym_t *sym; /* tag start block */ + bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */ +{ + shash_t *hash_ptr; + const char *err; + tag_t *tag_ptr; + + if (cur_file_ptr == (efdr_t *) NULL) + as_fatal (_("no current file pointer")); + + hash_ptr = (shash_t *) hash_find (tag_hash, tag); + + if (hash_ptr != (shash_t *) NULL + && hash_ptr->tag_ptr != (tag_t *) NULL) + { + tag_ptr = hash_ptr->tag_ptr; + if (sym != (localsym_t *) NULL) + { + tag_ptr->basic_type = basic_type; + tag_ptr->ifd = cur_file_ptr->file_index; + tag_ptr->sym = sym; + } + return tag_ptr; + } + + if (hash_ptr == (shash_t *) NULL) + { + char *perm; + + perm = xmalloc ((unsigned long) (strlen (tag) + 1)); + strcpy (perm, tag); + hash_ptr = allocate_shash (); + err = hash_insert (tag_hash, perm, (char *) hash_ptr); + if (err) + as_fatal (_("Inserting \"%s\" into tag hash table: %s"), + tag, err); + hash_ptr->string = perm; + } + + tag_ptr = allocate_tag (); + tag_ptr->forward_ref = (forward_t *) NULL; + tag_ptr->hash_ptr = hash_ptr; + tag_ptr->same_name = hash_ptr->tag_ptr; + tag_ptr->basic_type = basic_type; + tag_ptr->sym = sym; + tag_ptr->ifd = ((sym == (localsym_t *) NULL) + ? (symint_t) -1 + : cur_file_ptr->file_index); + tag_ptr->same_block = cur_tag_head->first_tag; + + cur_tag_head->first_tag = tag_ptr; + hash_ptr->tag_ptr = tag_ptr; + + return tag_ptr; +} + +/* Add an unknown {struct, union, enum} tag. */ + +static void +add_unknown_tag (ptag) + tag_t *ptag; /* pointer to tag information */ +{ + shash_t *hash_ptr = ptag->hash_ptr; + char *name = hash_ptr->string; + localsym_t *sym; + forward_t **pf; + +#ifdef ECOFF_DEBUG + if (debug > 1) + { + char *agg_type = "{unknown aggregate type}"; + switch (ptag->basic_type) + { + case bt_Struct: agg_type = "struct"; break; + case bt_Union: agg_type = "union"; break; + case bt_Enum: agg_type = "enum"; break; + default: break; + } + + fprintf (stderr, "unknown %s %.*s found\n", agg_type, + hash_ptr->len, name_start); + } +#endif + + sym = add_ecoff_symbol (name, + st_Block, + sc_Info, + (symbolS *) NULL, + (bfd_vma) 0, + (symint_t) 0, + (symint_t) 0); + + (void) add_ecoff_symbol (name, + st_End, + sc_Info, + (symbolS *) NULL, + (bfd_vma) 0, + (symint_t) 0, + (symint_t) 0); + + for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next) + ; + *pf = ptag->forward_ref; +} + +/* Add a procedure to the current file's list of procedures, and record + this is the current procedure. */ + +static void +add_procedure (func) + char *func; /* func name */ +{ + register varray_t *vp; + register proc_t *new_proc_ptr; + symbolS *sym; + +#ifdef ECOFF_DEBUG + if (debug) + fputc ('\n', stderr); +#endif + + if (cur_file_ptr == (efdr_t *) NULL) + as_fatal (_("no current file pointer")); + + vp = &cur_file_ptr->procs; + + if (vp->objects_last_page == vp->objects_per_page) + add_varray_page (vp); + + cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++]; + + if (first_proc_ptr == (proc_t *) NULL) + first_proc_ptr = new_proc_ptr; + + vp->num_allocated++; + + new_proc_ptr->pdr.isym = -1; + new_proc_ptr->pdr.iline = -1; + new_proc_ptr->pdr.lnLow = -1; + new_proc_ptr->pdr.lnHigh = -1; + + /* Set the BSF_FUNCTION flag for the symbol. */ + sym = symbol_find_or_make (func); + sym->bsym->flags |= BSF_FUNCTION; + + /* Push the start of the function. */ + new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text, + sym, (bfd_vma) 0, (symint_t) 0, + (symint_t) 0); + + ++proc_cnt; + + /* Fill in the linenos preceding the .ent, if any. */ + if (noproc_lineno != (lineno_list_t *) NULL) + { + lineno_list_t *l; + + for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next) + l->proc = new_proc_ptr; + *last_lineno_ptr = noproc_lineno; + while (*last_lineno_ptr != NULL) + { + last_lineno = *last_lineno_ptr; + last_lineno_ptr = &last_lineno->next; + } + noproc_lineno = (lineno_list_t *) NULL; + } +} + +symbolS * +ecoff_get_cur_proc_sym () +{ + return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL); +} + +/* Add a new filename, and set up all of the file relative + virtual arrays (strings, symbols, aux syms, etc.). Record + where the current file structure lives. */ + +static void +add_file (file_name, indx, fake) + const char *file_name; /* file name */ + int indx; + int fake; +{ + register int first_ch; + register efdr_t *fil_ptr; + +#ifdef ECOFF_DEBUG + if (debug) + fprintf (stderr, "\tfile\t%.*s\n", len, file_start); +#endif + + /* If the file name is NULL, then no .file symbol appeared, and we + want to use the actual file name. */ + if (file_name == (const char *) NULL) + { + char *file; + + if (first_file != (efdr_t *) NULL) + as_fatal (_("fake .file after real one")); + as_where (&file, (unsigned int *) NULL); + file_name = (const char *) file; + + /* Automatically generate ECOFF debugging information, since I + think that's what other ECOFF assemblers do. We don't do + this if we see a .file directive with a string, since that + implies that some sort of debugging information is being + provided. */ + if (! symbol_table_frozen && debug_type == DEBUG_NONE) + debug_type = DEBUG_ECOFF; + } + +#ifndef NO_LISTING + if (listing) + listing_source_file (file_name); +#endif + + current_stabs_filename = file_name; + + /* If we're creating stabs, then we don't actually make a new FDR. + Instead, we just create a stabs symbol. */ + if (stabs_seen) + { + (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil, + symbol_new ("L0\001", now_seg, + (valueT) frag_now_fix (), + frag_now), + (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL)); + return; + } + + first_ch = *file_name; + + /* FIXME: We can't safely merge files which have line number + information (fMerge will be zero in this case). Otherwise, we + get incorrect line number debugging info. See for instance + ecoff_build_lineno, which will end up setting all file->fdr.* + fields multiple times, resulting in incorrect debug info. In + order to make this work right, all line number and symbol info + for the same source file has to be adjacent in the object file, + so that a single file descriptor can be used to point to them. + This would require maintaining file specific lists of line + numbers and symbols for each file, so that they can be merged + together (or output together) when two .file pseudo-ops are + merged into one file descriptor. */ + + /* See if the file has already been created. */ + for (fil_ptr = first_file; + fil_ptr != (efdr_t *) NULL; + fil_ptr = fil_ptr->next_file) + { + if (first_ch == fil_ptr->name[0] + && strcmp (file_name, fil_ptr->name) == 0 + && fil_ptr->fdr.fMerge) + { + cur_file_ptr = fil_ptr; + if (! fake) + cur_file_ptr->fake = 0; + break; + } + } + + /* If this is a new file, create it. */ + if (fil_ptr == (efdr_t *) NULL) + { + if (file_desc.objects_last_page == file_desc.objects_per_page) + add_varray_page (&file_desc); + + fil_ptr = cur_file_ptr = + &file_desc.last->datum->file[file_desc.objects_last_page++]; + *fil_ptr = init_file; + + fil_ptr->file_index = current_file_idx++; + ++file_desc.num_allocated; + + fil_ptr->fake = fake; + + /* Allocate the string hash table. */ + fil_ptr->str_hash = hash_new (); + + /* Make sure 0 byte in string table is null */ + add_string (&fil_ptr->strings, + fil_ptr->str_hash, + "", + (shash_t **)0); + + if (strlen (file_name) > PAGE_USIZE - 2) + as_fatal (_("Filename goes over one page boundary.")); + + /* Push the start of the filename. We assume that the filename + will be stored at string offset 1. */ + (void) add_ecoff_symbol (file_name, st_File, sc_Text, + (symbolS *) NULL, (bfd_vma) 0, + (symint_t) 0, (symint_t) 0); + fil_ptr->fdr.rss = 1; + fil_ptr->name = &fil_ptr->strings.last->datum->byte[1]; + + /* Update the linked list of file descriptors. */ + *last_file_ptr = fil_ptr; + last_file_ptr = &fil_ptr->next_file; + + /* Add void & int types to the file (void should be first to catch + errant 0's within the index fields). */ + fil_ptr->void_type = add_aux_sym_tir (&void_type_info, + hash_yes, + &cur_file_ptr->thash_head[0]); + + fil_ptr->int_type = add_aux_sym_tir (&int_type_info, + hash_yes, + &cur_file_ptr->thash_head[0]); + } +} + +/* This function is called when the assembler notices a preprocessor + directive switching to a new file. This will not happen in + compiler output, only in hand coded assembler. */ + +void +ecoff_new_file (name) + const char *name; +{ + if (cur_file_ptr != NULL && strcmp (cur_file_ptr->name, name) == 0) + return; + add_file (name, 0, 0); + + /* This is a hand coded assembler file, so automatically turn on + debugging information. */ + if (debug_type == DEBUG_NONE) + debug_type = DEBUG_ECOFF; +} + +#ifdef ECOFF_DEBUG + +/* Convert storage class to string. */ + +static char * +sc_to_string(storage_class) + sc_t storage_class; +{ + switch(storage_class) + { + case sc_Nil: return "Nil,"; + case sc_Text: return "Text,"; + case sc_Data: return "Data,"; + case sc_Bss: return "Bss,"; + case sc_Register: return "Register,"; + case sc_Abs: return "Abs,"; + case sc_Undefined: return "Undefined,"; + case sc_CdbLocal: return "CdbLocal,"; + case sc_Bits: return "Bits,"; + case sc_CdbSystem: return "CdbSystem,"; + case sc_RegImage: return "RegImage,"; + case sc_Info: return "Info,"; + case sc_UserStruct: return "UserStruct,"; + case sc_SData: return "SData,"; + case sc_SBss: return "SBss,"; + case sc_RData: return "RData,"; + case sc_Var: return "Var,"; + case sc_Common: return "Common,"; + case sc_SCommon: return "SCommon,"; + case sc_VarRegister: return "VarRegister,"; + case sc_Variant: return "Variant,"; + case sc_SUndefined: return "SUndefined,"; + case sc_Init: return "Init,"; + case sc_Max: return "Max,"; + } + + return "???,"; +} + +#endif /* DEBUG */ + +#ifdef ECOFF_DEBUG + +/* Convert symbol type to string. */ + +static char * +st_to_string(symbol_type) + st_t symbol_type; +{ + switch(symbol_type) + { + case st_Nil: return "Nil,"; + case st_Global: return "Global,"; + case st_Static: return "Static,"; + case st_Param: return "Param,"; + case st_Local: return "Local,"; + case st_Label: return "Label,"; + case st_Proc: return "Proc,"; + case st_Block: return "Block,"; + case st_End: return "End,"; + case st_Member: return "Member,"; + case st_Typedef: return "Typedef,"; + case st_File: return "File,"; + case st_RegReloc: return "RegReloc,"; + case st_Forward: return "Forward,"; + case st_StaticProc: return "StaticProc,"; + case st_Constant: return "Constant,"; + case st_Str: return "String,"; + case st_Number: return "Number,"; + case st_Expr: return "Expr,"; + case st_Type: return "Type,"; + case st_Max: return "Max,"; + } + + return "???,"; +} + +#endif /* DEBUG */ + +/* Parse .begin directives which have a label as the first argument + which gives the location of the start of the block. */ + +void +ecoff_directive_begin (ignore) + int ignore; +{ + char *name; + char name_end; + + if (cur_file_ptr == (efdr_t *) NULL) + { + as_warn (_(".begin directive without a preceding .file directive")); + demand_empty_rest_of_line (); + return; + } + + if (cur_proc_ptr == (proc_t *) NULL) + { + as_warn (_(".begin directive without a preceding .ent directive")); + demand_empty_rest_of_line (); + return; + } + + name = input_line_pointer; + name_end = get_symbol_end (); + + (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text, + symbol_find_or_make (name), + (bfd_vma) 0, (symint_t) 0, (symint_t) 0); + + *input_line_pointer = name_end; + + /* The line number follows, but we don't use it. */ + (void) get_absolute_expression (); + demand_empty_rest_of_line (); +} + +/* Parse .bend directives which have a label as the first argument + which gives the location of the end of the block. */ + +void +ecoff_directive_bend (ignore) + int ignore; +{ + char *name; + char name_end; + symbolS *endsym; + + if (cur_file_ptr == (efdr_t *) NULL) + { + as_warn (_(".bend directive without a preceding .file directive")); + demand_empty_rest_of_line (); + return; + } + + if (cur_proc_ptr == (proc_t *) NULL) + { + as_warn (_(".bend directive without a preceding .ent directive")); + demand_empty_rest_of_line (); + return; + } + + name = input_line_pointer; + name_end = get_symbol_end (); + + /* The value is the distance between the .bend directive and the + corresponding symbol. We fill in the offset when we write out + the symbol. */ + endsym = symbol_find (name); + if (endsym == (symbolS *) NULL) + as_warn (_(".bend directive names unknown symbol")); + else + (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym, + (bfd_vma) 0, (symint_t) 0, (symint_t) 0); + + *input_line_pointer = name_end; + + /* The line number follows, but we don't use it. */ + (void) get_absolute_expression (); + demand_empty_rest_of_line (); +} + +/* COFF debugging information is provided as a series of directives + (.def, .scl, etc.). We build up information as we read the + directives in the following static variables, and file it away when + we reach the .endef directive. */ +static char *coff_sym_name; +static type_info_t coff_type; +static sc_t coff_storage_class; +static st_t coff_symbol_typ; +static int coff_is_function; +static char *coff_tag; +static valueT coff_value; +static symbolS *coff_sym_value; +static bfd_vma coff_sym_addend; +static int coff_inside_enumeration; + +/* Handle a .def directive: start defining a symbol. */ + +void +ecoff_directive_def (ignore) + int ignore; +{ + char *name; + char name_end; + + ecoff_debugging_seen = 1; + + SKIP_WHITESPACE (); + + name = input_line_pointer; + name_end = get_symbol_end (); + + if (coff_sym_name != (char *) NULL) + as_warn (_(".def pseudo-op used inside of .def/.endef; ignored")); + else if (*name == '\0') + as_warn (_("Empty symbol name in .def; ignored")); + else + { + if (coff_sym_name != (char *) NULL) + free (coff_sym_name); + if (coff_tag != (char *) NULL) + free (coff_tag); + coff_sym_name = (char *) xmalloc ((unsigned long) (strlen (name) + 1)); + strcpy (coff_sym_name, name); + coff_type = type_info_init; + coff_storage_class = sc_Nil; + coff_symbol_typ = st_Nil; + coff_is_function = 0; + coff_tag = (char *) NULL; + coff_value = 0; + coff_sym_value = (symbolS *) NULL; + coff_sym_addend = 0; + } + + *input_line_pointer = name_end; + + demand_empty_rest_of_line (); +} + +/* Handle a .dim directive, used to give dimensions for an array. The + arguments are comma separated numbers. mips-tfile assumes that + there will not be more than 6 dimensions, and gdb won't read any + more than that anyhow, so I will also make that assumption. */ + +void +ecoff_directive_dim (ignore) + int ignore; +{ + int dimens[N_TQ]; + int i; + + if (coff_sym_name == (char *) NULL) + { + as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored")); + demand_empty_rest_of_line (); + return; + } + + for (i = 0; i < N_TQ; i++) + { + SKIP_WHITESPACE (); + dimens[i] = get_absolute_expression (); + if (*input_line_pointer == ',') + ++input_line_pointer; + else + { + if (*input_line_pointer != '\n' + && *input_line_pointer != ';') + as_warn (_("Badly formed .dim directive")); + break; + } + } + + if (i == N_TQ) + --i; + + /* The dimensions are stored away in reverse order. */ + for (; i >= 0; i--) + { + if (coff_type.num_dims >= N_TQ) + { + as_warn (_("Too many .dim entries")); + break; + } + coff_type.dimensions[coff_type.num_dims] = dimens[i]; + ++coff_type.num_dims; + } + + demand_empty_rest_of_line (); +} + +/* Handle a .scl directive, which sets the COFF storage class of the + symbol. */ + +void +ecoff_directive_scl (ignore) + int ignore; +{ + long val; + + if (coff_sym_name == (char *) NULL) + { + as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored")); + demand_empty_rest_of_line (); + return; + } + + val = get_absolute_expression (); + + coff_symbol_typ = map_coff_sym_type[val]; + coff_storage_class = map_coff_storage[val]; + + demand_empty_rest_of_line (); +} + +/* Handle a .size directive. For some reason mips-tfile.c thinks that + .size can have multiple arguments. We humor it, although gcc will + never generate more than one argument. */ + +void +ecoff_directive_size (ignore) + int ignore; +{ + int sizes[N_TQ]; + int i; + + if (coff_sym_name == (char *) NULL) + { + as_warn (_(".size pseudo-op used outside of .def/.endef; ignored")); + demand_empty_rest_of_line (); + return; + } + + for (i = 0; i < N_TQ; i++) + { + SKIP_WHITESPACE (); + sizes[i] = get_absolute_expression (); + if (*input_line_pointer == ',') + ++input_line_pointer; + else + { + if (*input_line_pointer != '\n' + && *input_line_pointer != ';') + as_warn (_("Badly formed .size directive")); + break; + } + } + + if (i == N_TQ) + --i; + + /* The sizes are stored away in reverse order. */ + for (; i >= 0; i--) + { + if (coff_type.num_sizes >= N_TQ) + { + as_warn (_("Too many .size entries")); + break; + } + coff_type.sizes[coff_type.num_sizes] = sizes[i]; + ++coff_type.num_sizes; + } + + demand_empty_rest_of_line (); +} + +/* Handle the .type directive, which gives the COFF type of the + symbol. */ + +void +ecoff_directive_type (ignore) + int ignore; +{ + long val; + tq_t *tq_ptr; + tq_t *tq_shft; + + if (coff_sym_name == (char *) NULL) + { + as_warn (_(".type pseudo-op used outside of .def/.endef; ignored")); + demand_empty_rest_of_line (); + return; + } + + val = get_absolute_expression (); + + coff_type.orig_type = BTYPE (val); + coff_type.basic_type = map_coff_types[coff_type.orig_type]; + + tq_ptr = &coff_type.type_qualifiers[N_TQ]; + while (val &~ N_BTMASK) + { + if (tq_ptr == &coff_type.type_qualifiers[0]) + { + /* FIXME: We could handle this by setting the continued bit. + There would still be a limit: the .type argument can not + be infinite. */ + as_warn (_("The type of %s is too complex; it will be simplified"), + coff_sym_name); + break; + } + if (ISPTR (val)) + *--tq_ptr = tq_Ptr; + else if (ISFCN (val)) + *--tq_ptr = tq_Proc; + else if (ISARY (val)) + *--tq_ptr = tq_Array; + else + as_fatal (_("Unrecognized .type argument")); + + val = DECREF (val); + } + + tq_shft = &coff_type.type_qualifiers[0]; + while (tq_ptr != &coff_type.type_qualifiers[N_TQ]) + *tq_shft++ = *tq_ptr++; + + if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc) + { + /* If this is a function, ignore it, so that we don't get two + entries (one from the .ent, and one for the .def that + precedes it). Save the type information so that the end + block can properly add it after the begin block index. For + MIPS knows what reason, we must strip off the function type + at this point. */ + coff_is_function = 1; + tq_shft[-1] = tq_Nil; + } + + while (tq_shft != &coff_type.type_qualifiers[N_TQ]) + *tq_shft++ = tq_Nil; + + demand_empty_rest_of_line (); +} + +/* Handle the .tag directive, which gives the name of a structure, + union or enum. */ + +void +ecoff_directive_tag (ignore) + int ignore; +{ + char *name; + char name_end; + + if (coff_sym_name == (char *) NULL) + { + as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored")); + demand_empty_rest_of_line (); + return; + } + + name = input_line_pointer; + name_end = get_symbol_end (); + + coff_tag = (char *) xmalloc ((unsigned long) (strlen (name) + 1)); + strcpy (coff_tag, name); + + *input_line_pointer = name_end; + + demand_empty_rest_of_line (); +} + +/* Handle the .val directive, which gives the value of the symbol. It + may be the name of a static or global symbol. */ + +void +ecoff_directive_val (ignore) + int ignore; +{ + expressionS exp; + + if (coff_sym_name == (char *) NULL) + { + as_warn (_(".val pseudo-op used outside of .def/.endef; ignored")); + demand_empty_rest_of_line (); + return; + } + + expression (&exp); + if (exp.X_op != O_constant && exp.X_op != O_symbol) + { + as_bad (_(".val expression is too copmlex")); + demand_empty_rest_of_line (); + return; + } + + if (exp.X_op == O_constant) + coff_value = exp.X_add_number; + else + { + coff_sym_value = exp.X_add_symbol; + coff_sym_addend = exp.X_add_number; + } + + demand_empty_rest_of_line (); +} + +/* Handle the .endef directive, which terminates processing of COFF + debugging information for a symbol. */ + +void +ecoff_directive_endef (ignore) + int ignore; +{ + char *name; + symint_t indx; + localsym_t *sym; + + demand_empty_rest_of_line (); + + if (coff_sym_name == (char *) NULL) + { + as_warn (_(".endef pseudo-op used before .def; ignored")); + return; + } + + name = coff_sym_name; + coff_sym_name = (char *) NULL; + + /* If the symbol is a static or external, we have already gotten the + appropriate type and class, so make sure we don't override those + values. This is needed because there are some type and classes + that are not in COFF, such as short data, etc. */ + if (coff_sym_value != (symbolS *) NULL) + { + coff_symbol_typ = st_Nil; + coff_storage_class = sc_Nil; + } + + coff_type.extra_sizes = coff_tag != (char *) NULL; + if (coff_type.num_dims > 0) + { + int diff = coff_type.num_dims - coff_type.num_sizes; + int i = coff_type.num_dims - 1; + int j; + + if (coff_type.num_sizes != 1 || diff < 0) + { + as_warn (_("Bad COFF debugging info")); + return; + } + + /* If this is an array, make sure the same number of dimensions + and sizes were passed, creating extra sizes for multiply + dimensioned arrays if not passed. */ + coff_type.extra_sizes = 0; + if (diff) + { + j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1; + while (j >= 0) + { + coff_type.sizes[j] = (((j - diff) >= 0) + ? coff_type.sizes[j - diff] + : 0); + j--; + } + + coff_type.num_sizes = i + 1; + for (i--; i >= 0; i--) + coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0 + ? 0 + : (coff_type.sizes[i + 1] + / coff_type.dimensions[i + 1])); + } + } + else if (coff_symbol_typ == st_Member + && coff_type.num_sizes - coff_type.extra_sizes == 1) + { + /* Is this a bitfield? This is indicated by a structure memeber + having a size field that isn't an array. */ + coff_type.bitfield = 1; + } + + /* Except for enumeration members & begin/ending of scopes, put the + type word in the aux. symbol table. */ + if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End) + indx = 0; + else if (coff_inside_enumeration) + indx = cur_file_ptr->void_type; + else + { + if (coff_type.basic_type == bt_Struct + || coff_type.basic_type == bt_Union + || coff_type.basic_type == bt_Enum) + { + if (coff_tag == (char *) NULL) + { + as_warn (_("No tag specified for %s"), name); + return; + } + + coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL, + coff_type.basic_type); + } + + if (coff_is_function) + { + last_func_type_info = coff_type; + last_func_sym_value = coff_sym_value; + return; + } + + indx = add_aux_sym_tir (&coff_type, + hash_yes, + &cur_file_ptr->thash_head[0]); + } + + /* Do any last minute adjustments that are necessary. */ + switch (coff_symbol_typ) + { + default: + break; + + /* For the beginning of structs, unions, and enumerations, the + size info needs to be passed in the value field. */ + case st_Block: + if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes + != 1) + { + as_warn (_("Bad COFF debugging information")); + return; + } + else + coff_value = coff_type.sizes[0]; + + coff_inside_enumeration = (coff_type.orig_type == T_ENUM); + break; + + /* For the end of structs, unions, and enumerations, omit the + name which is always ".eos". This needs to be done last, so + that any error reporting above gives the correct name. */ + case st_End: + free (name); + name = (char *) NULL; + coff_value = 0; + coff_inside_enumeration = 0; + break; + + /* Members of structures and unions that aren't bitfields, need + to adjust the value from a byte offset to a bit offset. + Members of enumerations do not have the value adjusted, and + can be distinguished by indx == indexNil. For enumerations, + update the maximum enumeration value. */ + case st_Member: + if (! coff_type.bitfield && ! coff_inside_enumeration) + coff_value *= 8; + + break; + } + + /* Add the symbol. */ + sym = add_ecoff_symbol (name, + coff_symbol_typ, + coff_storage_class, + coff_sym_value, + coff_sym_addend, + (symint_t) coff_value, + indx); + + /* deal with struct, union, and enum tags. */ + if (coff_symbol_typ == st_Block) + { + /* Create or update the tag information. */ + tag_t *tag_ptr = get_tag (name, + sym, + coff_type.basic_type); + forward_t **pf; + + /* Remember any forward references. */ + for (pf = &sym->forward_ref; + *pf != (forward_t *) NULL; + pf = &(*pf)->next) + ; + *pf = tag_ptr->forward_ref; + tag_ptr->forward_ref = (forward_t *) NULL; + } +} + +/* Parse .end directives. */ + +void +ecoff_directive_end (ignore) + int ignore; +{ + char *name; + char name_end; + register int ch; + symbolS *ent; + + if (cur_file_ptr == (efdr_t *) NULL) + { + as_warn (_(".end directive without a preceding .file directive")); + demand_empty_rest_of_line (); + return; + } + + if (cur_proc_ptr == (proc_t *) NULL) + { + as_warn (_(".end directive without a preceding .ent directive")); + demand_empty_rest_of_line (); + return; + } + + name = input_line_pointer; + name_end = get_symbol_end (); + + ch = *name; + if (! is_name_beginner (ch)) + { + as_warn (_(".end directive has no name")); + *input_line_pointer = name_end; + demand_empty_rest_of_line (); + return; + } + + /* The value is the distance between the .end directive and the + corresponding symbol. We create a fake symbol to hold the + current location, and put in the offset when we write out the + symbol. */ + ent = symbol_find (name); + if (ent == (symbolS *) NULL) + as_warn (_(".end directive names unknown symbol")); + else + (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, + symbol_new ("L0\001", now_seg, + (valueT) frag_now_fix (), + frag_now), + (bfd_vma) 0, (symint_t) 0, (symint_t) 0); + + cur_proc_ptr = (proc_t *) NULL; + + *input_line_pointer = name_end; + demand_empty_rest_of_line (); +} + +/* Parse .ent directives. */ + +void +ecoff_directive_ent (ignore) + int ignore; +{ + char *name; + char name_end; + register int ch; + + if (cur_file_ptr == (efdr_t *) NULL) + add_file ((const char *) NULL, 0, 1); + + if (cur_proc_ptr != (proc_t *) NULL) + { + as_warn (_("second .ent directive found before .end directive")); + demand_empty_rest_of_line (); + return; + } + + name = input_line_pointer; + name_end = get_symbol_end (); + + ch = *name; + if (! is_name_beginner (ch)) + { + as_warn (_(".ent directive has no name")); + *input_line_pointer = name_end; + demand_empty_rest_of_line (); + return; + } + + add_procedure (name); + + *input_line_pointer = name_end; + + /* The .ent directive is sometimes followed by a number. I'm not + really sure what the number means. I don't see any way to store + the information in the PDR. The Irix 4 assembler seems to ignore + the information. */ + SKIP_WHITESPACE (); + if (*input_line_pointer == ',') + { + ++input_line_pointer; + SKIP_WHITESPACE (); + } + if (isdigit (*input_line_pointer) || *input_line_pointer == '-') + (void) get_absolute_expression (); + + demand_empty_rest_of_line (); +} + +/* Parse .extern directives. */ + +void +ecoff_directive_extern (ignore) + int ignore; +{ + char *name; + int c; + symbolS *symbolp; + valueT size; + + name = input_line_pointer; + c = get_symbol_end (); + symbolp = symbol_find_or_make (name); + *input_line_pointer = c; + + S_SET_EXTERNAL (symbolp); + + if (*input_line_pointer == ',') + ++input_line_pointer; + size = get_absolute_expression (); + + symbolp->ecoff_extern_size = size; +} + +/* Parse .file directives. */ + +void +ecoff_directive_file (ignore) + int ignore; +{ + int indx; + char *name; + int len; + + if (cur_proc_ptr != (proc_t *) NULL) + { + as_warn (_("No way to handle .file within .ent/.end section")); + demand_empty_rest_of_line (); + return; + } + + indx = (int) get_absolute_expression (); + + /* FIXME: we don't have to save the name here. */ + name = demand_copy_C_string (&len); + + add_file (name, indx - 1, 0); + + demand_empty_rest_of_line (); +} + +/* Parse .fmask directives. */ + +void +ecoff_directive_fmask (ignore) + int ignore; +{ + long val; + + if (cur_proc_ptr == (proc_t *) NULL) + { + as_warn (_(".fmask outside of .ent")); + demand_empty_rest_of_line (); + return; + } + + if (get_absolute_expression_and_terminator (&val) != ',') + { + as_warn (_("Bad .fmask directive")); + --input_line_pointer; + demand_empty_rest_of_line (); + return; + } + + cur_proc_ptr->pdr.fregmask = val; + cur_proc_ptr->pdr.fregoffset = get_absolute_expression (); + + demand_empty_rest_of_line (); +} + +/* Parse .frame directives. */ + +void +ecoff_directive_frame (ignore) + int ignore; +{ + long val; + + if (cur_proc_ptr == (proc_t *) NULL) + { + as_warn (_(".frame outside of .ent")); + demand_empty_rest_of_line (); + return; + } + + cur_proc_ptr->pdr.framereg = tc_get_register (1); + + SKIP_WHITESPACE (); + if (*input_line_pointer++ != ',' + || get_absolute_expression_and_terminator (&val) != ',') + { + as_warn (_("Bad .frame directive")); + --input_line_pointer; + demand_empty_rest_of_line (); + return; + } + + cur_proc_ptr->pdr.frameoffset = val; + + cur_proc_ptr->pdr.pcreg = tc_get_register (0); + +#if 0 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according + to Sandro. I don't yet know where this value should be stored, if + anywhere. */ + demand_empty_rest_of_line (); +#else + s_ignore (42); +#endif +} + +/* Parse .mask directives. */ + +void +ecoff_directive_mask (ignore) + int ignore; +{ + long val; + + if (cur_proc_ptr == (proc_t *) NULL) + { + as_warn (_(".mask outside of .ent")); + demand_empty_rest_of_line (); + return; + } + + if (get_absolute_expression_and_terminator (&val) != ',') + { + as_warn (_("Bad .mask directive")); + --input_line_pointer; + demand_empty_rest_of_line (); + return; + } + + cur_proc_ptr->pdr.regmask = val; + cur_proc_ptr->pdr.regoffset = get_absolute_expression (); + + demand_empty_rest_of_line (); +} + +/* Parse .loc directives. */ + +void +ecoff_directive_loc (ignore) + int ignore; +{ + lineno_list_t *list; + symint_t lineno; + + if (cur_file_ptr == (efdr_t *) NULL) + { + as_warn (_(".loc before .file")); + demand_empty_rest_of_line (); + return; + } + + if (now_seg != text_section) + { + as_warn (_(".loc outside of .text")); + demand_empty_rest_of_line (); + return; + } + + /* Skip the file number. */ + SKIP_WHITESPACE (); + get_absolute_expression (); + SKIP_WHITESPACE (); + + lineno = get_absolute_expression (); + +#ifndef NO_LISTING + if (listing) + listing_source_line (lineno); +#endif + + /* If we're building stabs, then output a special label rather than + ECOFF line number info. */ + if (stabs_seen) + { + (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text, + symbol_new ("L0\001", now_seg, + (valueT) frag_now_fix (), + frag_now), + (bfd_vma) 0, 0, lineno); + return; + } + + list = allocate_lineno_list (); + + list->next = (lineno_list_t *) NULL; + list->file = cur_file_ptr; + list->proc = cur_proc_ptr; + list->frag = frag_now; + list->paddr = frag_now_fix (); + list->lineno = lineno; + + /* We don't want to merge files which have line numbers. */ + cur_file_ptr->fdr.fMerge = 0; + + /* A .loc directive will sometimes appear before a .ent directive, + which means that cur_proc_ptr will be NULL here. Arrange to + patch this up. */ + if (cur_proc_ptr == (proc_t *) NULL) + { + lineno_list_t **pl; + + pl = &noproc_lineno; + while (*pl != (lineno_list_t *) NULL) + pl = &(*pl)->next; + *pl = list; + } + else + { + last_lineno = list; + *last_lineno_ptr = list; + last_lineno_ptr = &list->next; + } +} + +/* The MIPS assembler sometimes inserts nop instructions in the + instruction stream. When this happens, we must patch up the .loc + information so that it points to the instruction after the nop. */ + +void +ecoff_fix_loc (old_frag, old_frag_offset) + fragS *old_frag; + unsigned long old_frag_offset; +{ + if (last_lineno != NULL + && last_lineno->frag == old_frag + && last_lineno->paddr == old_frag_offset) + { + last_lineno->frag = frag_now; + last_lineno->paddr = frag_now_fix (); + } +} + +/* Make sure the @stabs symbol is emitted. */ + +static void +mark_stabs (ignore) + int ignore; +{ + if (! stabs_seen) + { + /* Add a dummy @stabs dymbol. */ + stabs_seen = 1; + (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo, + (symbolS *) NULL, + (bfd_vma) 0, (symint_t) -1, + ECOFF_MARK_STAB (0)); + } +} + +/* Parse .weakext directives. */ +#ifndef TC_MIPS +/* For TC_MIPS use the version in tc-mips.c. */ +void +ecoff_directive_weakext (ignore) + int ignore; +{ + char *name; + int c; + symbolS *symbolP; + expressionS exp; + + name = input_line_pointer; + c = get_symbol_end (); + symbolP = symbol_find_or_make (name); + *input_line_pointer = c; + + SKIP_WHITESPACE (); + + if (*input_line_pointer == ',') + { + if (S_IS_DEFINED (symbolP)) + { + as_bad (_("Ignoring attempt to redefine symbol `%s'."), + S_GET_NAME (symbolP)); + ignore_rest_of_line (); + return; + } + + ++input_line_pointer; + SKIP_WHITESPACE (); + if (! is_end_of_line[(unsigned char) *input_line_pointer]) + { + expression (&exp); + if (exp.X_op != O_symbol) + { + as_bad (_("bad .weakext directive")); + ignore_rest_of_line(); + return; + } + symbolP->sy_value = exp; + } + } + + S_SET_WEAK (symbolP); + + demand_empty_rest_of_line (); +} +#endif /* not TC_MIPS */ + +/* Handle .stabs directives. The actual parsing routine is done by a + generic routine. This routine is called via OBJ_PROCESS_STAB. + When this is called, input_line_pointer will be pointing at the + value field of the stab. + + .stabs directives have five fields: + "string" a string, encoding the type information. + code a numeric code, defined in <stab.h> + 0 a zero + desc a zero or line number + value a numeric value or an address. + + If the value is relocatable, we transform this into: + iss points as an index into string space + value value from lookup of the name + st st from lookup of the name + sc sc from lookup of the name + index code|CODE_MASK + + If the value is not relocatable, we transform this into: + iss points as an index into string space + value value + st st_Nil + sc sc_Nil + index code|CODE_MASK + + .stabn directives have four fields (string is null): + code a numeric code, defined in <stab.h> + 0 a zero + desc a zero or a line number + value a numeric value or an address. */ + +void +ecoff_stab (sec, what, string, type, other, desc) + segT sec; + int what; + const char *string; + int type; + int other; + int desc; +{ + efdr_t *save_file_ptr = cur_file_ptr; + symbolS *sym; + symint_t value; + bfd_vma addend; + st_t st; + sc_t sc; + symint_t indx; + localsym_t *hold = NULL; + + ecoff_debugging_seen = 1; + + /* We don't handle .stabd. */ + if (what != 's' && what != 'n') + { + as_bad (_(".stab%c is not supported"), what); + return; + } + + /* A .stabn uses a null name, not an empty string. */ + if (what == 'n') + string = NULL; + + /* We ignore the other field. */ + if (other != 0) + as_warn (_(".stab%c: ignoring non-zero other field"), what); + + /* Make sure we have a current file. */ + if (cur_file_ptr == (efdr_t *) NULL) + { + add_file ((const char *) NULL, 0, 1); + save_file_ptr = cur_file_ptr; + } + + /* For stabs in ECOFF, the first symbol must be @stabs. This is a + signal to gdb. */ + if (stabs_seen == 0) + mark_stabs (0); + + /* Line number stabs are handled differently, since they have two + values, the line number and the address of the label. We use the + index field (aka desc) to hold the line number, and the value + field to hold the address. The symbol type is st_Label, which + should be different from the other stabs, so that gdb can + recognize it. */ + if (type == N_SLINE) + { + SYMR dummy_symr; + char *name; + char name_end; + +#ifndef NO_LISTING + if (listing) + listing_source_line ((unsigned int) desc); +#endif + + dummy_symr.index = desc; + if (dummy_symr.index != desc) + { + as_warn (_("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)"), + desc, what); + return; + } + + name = input_line_pointer; + name_end = get_symbol_end (); + + sym = symbol_find_or_make (name); + *input_line_pointer = name_end; + + value = 0; + addend = 0; + st = st_Label; + sc = sc_Text; + indx = desc; + } + else + { +#ifndef NO_LISTING + if (listing && (type == N_SO || type == N_SOL)) + listing_source_file (string); +#endif + + if (isdigit (*input_line_pointer) + || *input_line_pointer == '-' + || *input_line_pointer == '+') + { + st = st_Nil; + sc = sc_Nil; + sym = (symbolS *) NULL; + value = get_absolute_expression (); + addend = 0; + } + else if (! is_name_beginner ((unsigned char) *input_line_pointer)) + { + as_warn (_("Illegal .stab%c directive, bad character"), what); + return; + } + else + { + expressionS exp; + + sc = sc_Nil; + st = st_Nil; + + expression (&exp); + if (exp.X_op == O_constant) + { + sym = NULL; + value = exp.X_add_number; + addend = 0; + } + else if (exp.X_op == O_symbol) + { + sym = exp.X_add_symbol; + value = 0; + addend = exp.X_add_number; + } + else + { + sym = make_expr_symbol (&exp); + value = 0; + addend = 0; + } + } + + indx = ECOFF_MARK_STAB (type); + } + + /* Don't store the stabs symbol we are creating as the type of the + ECOFF symbol. We want to compute the type of the ECOFF symbol + independently. */ + if (sym != (symbolS *) NULL) + hold = sym->ecoff_symbol; + + (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx); + + if (sym != (symbolS *) NULL) + sym->ecoff_symbol = hold; + + /* Restore normal file type. */ + cur_file_ptr = save_file_ptr; +} + +/* Frob an ECOFF symbol. Small common symbols go into a special + .scommon section rather than bfd_com_section. */ + +void +ecoff_frob_symbol (sym) + symbolS *sym; +{ + if (S_IS_COMMON (sym) + && S_GET_VALUE (sym) > 0 + && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput)) + { + static asection scom_section; + static asymbol scom_symbol; + + /* We must construct a fake section similar to bfd_com_section + but with the name .scommon. */ + if (scom_section.name == NULL) + { + scom_section = bfd_com_section; + scom_section.name = ".scommon"; + scom_section.output_section = &scom_section; + scom_section.symbol = &scom_symbol; + scom_section.symbol_ptr_ptr = &scom_section.symbol; + scom_symbol = *bfd_com_section.symbol; + scom_symbol.name = ".scommon"; + scom_symbol.section = &scom_section; + } + S_SET_SEGMENT (sym, &scom_section); + } + + /* Double check weak symbols. */ + if (sym->bsym->flags & BSF_WEAK) + { + if (S_IS_COMMON (sym)) + as_bad (_("Symbol `%s' can not be both weak and common"), + S_GET_NAME (sym)); + } +} + +/* Add bytes to the symbolic information buffer. */ + +static char * +ecoff_add_bytes (buf, bufend, bufptr, need) + char **buf; + char **bufend; + char *bufptr; + unsigned long need; +{ + unsigned long at; + unsigned long want; + + at = bufptr - *buf; + need -= *bufend - bufptr; + if (need < PAGE_SIZE) + need = PAGE_SIZE; + want = (*bufend - *buf) + need; + *buf = xrealloc (*buf, want); + *bufend = *buf + want; + return *buf + at; +} + +/* Adjust the symbolic information buffer to the alignment required + for the ECOFF target debugging information. */ + +static unsigned long +ecoff_padding_adjust (backend, buf, bufend, offset, bufptrptr) + const struct ecoff_debug_swap *backend; + char **buf; + char **bufend; + unsigned long offset; + char **bufptrptr; +{ + bfd_size_type align; + + align = backend->debug_align; + if ((offset & (align - 1)) != 0) + { + unsigned long add; + + add = align - (offset & (align - 1)); + if (*bufend - (*buf + offset) < add) + (void) ecoff_add_bytes (buf, bufend, *buf + offset, add); + memset (*buf + offset, 0, add); + offset += add; + if (bufptrptr != (char **) NULL) + *bufptrptr = *buf + offset; + } + + return offset; +} + +/* Build the line number information. */ + +static unsigned long +ecoff_build_lineno (backend, buf, bufend, offset, linecntptr) + const struct ecoff_debug_swap *backend; + char **buf; + char **bufend; + unsigned long offset; + long *linecntptr; +{ + char *bufptr; + register lineno_list_t *l; + lineno_list_t *last; + efdr_t *file; + proc_t *proc; + unsigned long c; + long iline; + long totcount; + lineno_list_t first; + lineno_list_t *local_first_lineno = first_lineno; + + if (linecntptr != (long *) NULL) + *linecntptr = 0; + + bufptr = *buf + offset; + + file = (efdr_t *) NULL; + proc = (proc_t *) NULL; + last = (lineno_list_t *) NULL; + c = offset; + iline = 0; + totcount = 0; + + /* For some reason the address of the first procedure is ignored + when reading line numbers. This doesn't matter if the address of + the first procedure is 0, but when gcc is generating MIPS + embedded PIC code, it will put strings in the .text section + before the first procedure. We cope by inserting a dummy line if + the address of the first procedure is not 0. Hopefully this + won't screw things up too badly. + + Don't do this for ECOFF assembly source line numbers. They work + without this extra attention. */ + if (debug_type != DEBUG_ECOFF + && first_proc_ptr != (proc_t *) NULL + && local_first_lineno != (lineno_list_t *) NULL + && ((S_GET_VALUE (first_proc_ptr->sym->as_sym) + + bfd_get_section_vma (stdoutput, + S_GET_SEGMENT (first_proc_ptr->sym->as_sym))) + != 0)) + { + first.file = local_first_lineno->file; + first.proc = local_first_lineno->proc; + first.frag = &zero_address_frag; + first.paddr = 0; + first.lineno = 0; + + first.next = local_first_lineno; + local_first_lineno = &first; + } + + for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next) + { + long count; + long delta; + + /* Get the offset to the memory address of the next line number + (in words). Do this first, so that we can skip ahead to the + next useful line number entry. */ + if (l->next == (lineno_list_t *) NULL) + { + /* We want a count of zero, but it will be decremented + before it is used. */ + count = 1; + } + else if (l->next->frag->fr_address + l->next->paddr + > l->frag->fr_address + l->paddr) + { + count = ((l->next->frag->fr_address + l->next->paddr + - (l->frag->fr_address + l->paddr)) + >> 2); + } + else + { + /* Don't change last, so we still get the right delta. */ + continue; + } + + if (l->file != file || l->proc != proc) + { + if (l->proc != proc && proc != (proc_t *) NULL) + proc->pdr.lnHigh = last->lineno; + if (l->file != file && file != (efdr_t *) NULL) + { + file->fdr.cbLine = c - file->fdr.cbLineOffset; + file->fdr.cline = totcount + count; + if (linecntptr != (long *) NULL) + *linecntptr += totcount + count; + totcount = 0; + } + + if (l->file != file) + { + efdr_t *last_file = file; + + file = l->file; + if (last_file != (efdr_t *) NULL) + file->fdr.ilineBase + = last_file->fdr.ilineBase + last_file->fdr.cline; + else + file->fdr.ilineBase = 0; + file->fdr.cbLineOffset = c; + } + if (l->proc != proc) + { + proc = l->proc; + if (proc != (proc_t *) NULL) + { + proc->pdr.lnLow = l->lineno; + proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset; + proc->pdr.iline = totcount; + } + } + + last = (lineno_list_t *) NULL; + } + + totcount += count; + + /* Get the offset to this line number. */ + if (last == (lineno_list_t *) NULL) + delta = 0; + else + delta = l->lineno - last->lineno; + + /* Put in the offset to this line number. */ + while (delta != 0) + { + int setcount; + + /* 1 is added to each count read. */ + --count; + /* We can only adjust the word count by up to 15 words at a + time. */ + if (count <= 0x0f) + { + setcount = count; + count = 0; + } + else + { + setcount = 0x0f; + count -= 0x0f; + } + if (delta >= -7 && delta <= 7) + { + if (bufptr >= *bufend) + bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); + *bufptr++ = setcount + (delta << 4); + delta = 0; + ++c; + } + else + { + int set; + + if (*bufend - bufptr < 3) + bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3); + *bufptr++ = setcount + (8 << 4); + if (delta < -0x8000) + { + set = -0x8000; + delta += 0x8000; + } + else if (delta > 0x7fff) + { + set = 0x7fff; + delta -= 0x7fff; + } + else + { + set = delta; + delta = 0; + } + *bufptr++ = set >> 8; + *bufptr++ = set & 0xffff; + c += 3; + } + } + + /* Finish adjusting the count. */ + while (count > 0) + { + if (bufptr >= *bufend) + bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); + /* 1 is added to each count read. */ + --count; + if (count > 0x0f) + { + *bufptr++ = 0x0f; + count -= 0x0f; + } + else + { + *bufptr++ = count; + count = 0; + } + ++c; + } + + ++iline; + last = l; + } + + if (proc != (proc_t *) NULL) + proc->pdr.lnHigh = last->lineno; + if (file != (efdr_t *) NULL) + { + file->fdr.cbLine = c - file->fdr.cbLineOffset; + file->fdr.cline = totcount; + } + + if (linecntptr != (long *) NULL) + *linecntptr += totcount; + + c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr); + + return c; +} + +/* Build and swap out the symbols. */ + +static unsigned long +ecoff_build_symbols (backend, buf, bufend, offset) + const struct ecoff_debug_swap *backend; + char **buf; + char **bufend; + unsigned long offset; +{ + const bfd_size_type external_sym_size = backend->external_sym_size; + void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR)) + = backend->swap_sym_out; + char *sym_out; + long isym; + vlinks_t *file_link; + + sym_out = *buf + offset; + + isym = 0; + + /* The symbols are stored by file. */ + for (file_link = file_desc.first; + file_link != (vlinks_t *) NULL; + file_link = file_link->next) + { + int ifilesym; + int fil_cnt; + efdr_t *fil_ptr; + efdr_t *fil_end; + + if (file_link->next == (vlinks_t *) NULL) + fil_cnt = file_desc.objects_last_page; + else + fil_cnt = file_desc.objects_per_page; + fil_ptr = file_link->datum->file; + fil_end = fil_ptr + fil_cnt; + for (; fil_ptr < fil_end; fil_ptr++) + { + vlinks_t *sym_link; + + fil_ptr->fdr.isymBase = isym; + ifilesym = isym; + for (sym_link = fil_ptr->symbols.first; + sym_link != (vlinks_t *) NULL; + sym_link = sym_link->next) + { + int sym_cnt; + localsym_t *sym_ptr; + localsym_t *sym_end; + + if (sym_link->next == (vlinks_t *) NULL) + sym_cnt = fil_ptr->symbols.objects_last_page; + else + sym_cnt = fil_ptr->symbols.objects_per_page; + sym_ptr = sym_link->datum->sym; + sym_end = sym_ptr + sym_cnt; + for (; sym_ptr < sym_end; sym_ptr++) + { + int local; + symbolS *as_sym; + forward_t *f; + + know (sym_ptr->file_ptr == fil_ptr); + + /* If there is no associated gas symbol, then this + is a pure debugging symbol. We have already + added the name (if any) to fil_ptr->strings. + Otherwise we must decide whether this is an + external or a local symbol (actually, it may be + both if the local provides additional debugging + information for the external). */ + local = 1; + as_sym = sym_ptr->as_sym; + if (as_sym != (symbolS *) NULL) + { + symint_t indx; + + /* The value of a block start symbol is the + offset from the start of the procedure. For + other symbols we just use the gas value (but + we must offset it by the vma of the section, + just as BFD does, because BFD will not see + this value). */ + if (sym_ptr->ecoff_sym.asym.st == (int) st_Block + && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text) + { + symbolS *begin_sym; + + know (sym_ptr->proc_ptr != (proc_t *) NULL); + begin_sym = sym_ptr->proc_ptr->sym->as_sym; + if (S_GET_SEGMENT (as_sym) + != S_GET_SEGMENT (begin_sym)) + as_warn (_(".begin/.bend in different segments")); + sym_ptr->ecoff_sym.asym.value = + S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); + } + else + sym_ptr->ecoff_sym.asym.value = + (S_GET_VALUE (as_sym) + + bfd_get_section_vma (stdoutput, + S_GET_SEGMENT (as_sym)) + + sym_ptr->addend); + + sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym); + + /* Set st_Proc to st_StaticProc for local + functions. */ + if (sym_ptr->ecoff_sym.asym.st == st_Proc + && S_IS_DEFINED (as_sym) + && ! S_IS_EXTERNAL (as_sym) + && ! S_IS_WEAK (as_sym)) + sym_ptr->ecoff_sym.asym.st = st_StaticProc; + + /* Get the type and storage class based on where + the symbol actually wound up. Traditionally, + N_LBRAC and N_RBRAC are *not* relocated. */ + indx = sym_ptr->ecoff_sym.asym.index; + if (sym_ptr->ecoff_sym.asym.st == st_Nil + && sym_ptr->ecoff_sym.asym.sc == sc_Nil + && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) + || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC) + && (ECOFF_UNMARK_STAB (indx) != N_RBRAC)))) + { + segT seg; + const char *segname; + st_t st; + sc_t sc; + + seg = S_GET_SEGMENT (as_sym); + segname = segment_name (seg); + + if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) + && (S_IS_EXTERNAL (as_sym) + || S_IS_WEAK (as_sym) + || ! S_IS_DEFINED (as_sym))) + { + if ((as_sym->bsym->flags & BSF_FUNCTION) != 0) + st = st_Proc; + else + st = st_Global; + } + else if (seg == text_section) + st = st_Label; + else + st = st_Static; + + if (! S_IS_DEFINED (as_sym)) + { + if (as_sym->ecoff_extern_size == 0 + || (as_sym->ecoff_extern_size + > bfd_get_gp_size (stdoutput))) + sc = sc_Undefined; + else + { + sc = sc_SUndefined; + sym_ptr->ecoff_sym.asym.value = + as_sym->ecoff_extern_size; + } +#ifdef S_SET_SIZE + S_SET_SIZE (as_sym, as_sym->ecoff_extern_size); +#endif + } + else if (S_IS_COMMON (as_sym)) + { + if (S_GET_VALUE (as_sym) > 0 + && (S_GET_VALUE (as_sym) + <= bfd_get_gp_size (stdoutput))) + sc = sc_SCommon; + else + sc = sc_Common; + } + else if (seg == text_section) + sc = sc_Text; + else if (seg == data_section) + sc = sc_Data; + else if (strcmp (segname, ".rdata") == 0 + || strcmp (segname, ".rodata") == 0) + sc = sc_RData; + else if (strcmp (segname, ".sdata") == 0) + sc = sc_SData; + else if (seg == bss_section) + sc = sc_Bss; + else if (strcmp (segname, ".sbss") == 0) + sc = sc_SBss; + else if (seg == &bfd_abs_section) + sc = sc_Abs; + else + { + /* This must be a user named section. + This is not possible in ECOFF, but it + is in ELF. */ + sc = sc_Data; + } + + sym_ptr->ecoff_sym.asym.st = (int) st; + sym_ptr->ecoff_sym.asym.sc = (int) sc; + } + + /* This is just an external symbol if it is + outside a procedure and it has a type. + FIXME: g++ will generate symbols which have + different names in the debugging information + than the actual symbol. Should we handle + them here? */ + if ((S_IS_EXTERNAL (as_sym) + || S_IS_WEAK (as_sym) + || ! S_IS_DEFINED (as_sym)) + && sym_ptr->proc_ptr == (proc_t *) NULL + && sym_ptr->ecoff_sym.asym.st != (int) st_Nil + && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)) + local = 0; + + /* This is just an external symbol if it is a + common symbol. */ + if (S_IS_COMMON (as_sym)) + local = 0; + + /* If an st_end symbol has an associated gas + symbol, then it is a local label created for + a .bend or .end directive. Stabs line + numbers will have \001 in the names. */ + if (local + && sym_ptr->ecoff_sym.asym.st != st_End + && strchr (sym_ptr->name, '\001') == 0) + sym_ptr->ecoff_sym.asym.iss = + add_string (&fil_ptr->strings, + fil_ptr->str_hash, + sym_ptr->name, + (shash_t **) NULL); + } + + /* We now know the index of this symbol; fill in + locations that have been waiting for that + information. */ + if (sym_ptr->begin_ptr != (localsym_t *) NULL) + { + localsym_t *begin_ptr; + st_t begin_type; + + know (local); + begin_ptr = sym_ptr->begin_ptr; + know (begin_ptr->sym_index != -1); + sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index; + if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) + sym_ptr->ecoff_sym.asym.iss = + begin_ptr->ecoff_sym.asym.iss; + + begin_type = begin_ptr->ecoff_sym.asym.st; + if (begin_type == st_File + || begin_type == st_Block) + { + begin_ptr->ecoff_sym.asym.index = + isym - ifilesym + 1; + (*swap_sym_out) (stdoutput, + &begin_ptr->ecoff_sym.asym, + (*buf + + offset + + (begin_ptr->sym_index + * external_sym_size))); + } + else + { + know (begin_ptr->index_ptr != (aux_t *) NULL); + begin_ptr->index_ptr->data.isym = + isym - ifilesym + 1; + } + + /* The value of the symbol marking the end of a + procedure is the size of the procedure. The + value of the symbol marking the end of a + block is the offset from the start of the + procedure to the block. */ + if (begin_type == st_Proc + || begin_type == st_StaticProc) + { + know (as_sym != (symbolS *) NULL); + know (begin_ptr->as_sym != (symbolS *) NULL); + if (S_GET_SEGMENT (as_sym) + != S_GET_SEGMENT (begin_ptr->as_sym)) + as_warn (_(".begin/.bend in different segments")); + sym_ptr->ecoff_sym.asym.value = + (S_GET_VALUE (as_sym) + - S_GET_VALUE (begin_ptr->as_sym)); + + /* If the size is odd, this is probably a + mips16 function; force it to be even. */ + if ((sym_ptr->ecoff_sym.asym.value & 1) != 0) + ++sym_ptr->ecoff_sym.asym.value; + +#ifdef S_SET_SIZE + S_SET_SIZE (begin_ptr->as_sym, + sym_ptr->ecoff_sym.asym.value); +#endif + } + else if (begin_type == st_Block + && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) + { + symbolS *begin_sym; + + know (as_sym != (symbolS *) NULL); + know (sym_ptr->proc_ptr != (proc_t *) NULL); + begin_sym = sym_ptr->proc_ptr->sym->as_sym; + if (S_GET_SEGMENT (as_sym) + != S_GET_SEGMENT (begin_sym)) + as_warn (_(".begin/.bend in different segments")); + sym_ptr->ecoff_sym.asym.value = + S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); + } + } + + for (f = sym_ptr->forward_ref; + f != (forward_t *) NULL; + f = f->next) + { + know (local); + f->ifd_ptr->data.isym = fil_ptr->file_index; + f->index_ptr->data.rndx.index = isym - ifilesym; + } + + if (local) + { + if (*bufend - sym_out < external_sym_size) + sym_out = ecoff_add_bytes (buf, bufend, + sym_out, + external_sym_size); + (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym, + sym_out); + sym_out += external_sym_size; + + sym_ptr->sym_index = isym; + + if (sym_ptr->proc_ptr != (proc_t *) NULL + && sym_ptr->proc_ptr->sym == sym_ptr) + sym_ptr->proc_ptr->pdr.isym = isym - ifilesym; + + ++isym; + } + + /* Record the local symbol index and file number in + case this is an external symbol. Note that this + destroys the asym.index field. */ + if (as_sym != (symbolS *) NULL + && as_sym->ecoff_symbol == sym_ptr) + { + if ((sym_ptr->ecoff_sym.asym.st == st_Proc + || sym_ptr->ecoff_sym.asym.st == st_StaticProc) + && local) + sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1; + sym_ptr->ecoff_sym.ifd = fil_ptr->file_index; + + /* Don't try to merge an FDR which has an + external symbol attached to it. */ + if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym)) + fil_ptr->fdr.fMerge = 0; + } + } + } + fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase; + } + } + + return offset + isym * external_sym_size; +} + +/* Swap out the procedure information. */ + +static unsigned long +ecoff_build_procs (backend, buf, bufend, offset) + const struct ecoff_debug_swap *backend; + char **buf; + char **bufend; + unsigned long offset; +{ + const bfd_size_type external_pdr_size = backend->external_pdr_size; + void (* const swap_pdr_out) PARAMS ((bfd *, const PDR *, PTR)) + = backend->swap_pdr_out; + char *pdr_out; + long iproc; + vlinks_t *file_link; + + pdr_out = *buf + offset; + + iproc = 0; + + /* The procedures are stored by file. */ + for (file_link = file_desc.first; + file_link != (vlinks_t *) NULL; + file_link = file_link->next) + { + int fil_cnt; + efdr_t *fil_ptr; + efdr_t *fil_end; + + if (file_link->next == (vlinks_t *) NULL) + fil_cnt = file_desc.objects_last_page; + else + fil_cnt = file_desc.objects_per_page; + fil_ptr = file_link->datum->file; + fil_end = fil_ptr + fil_cnt; + for (; fil_ptr < fil_end; fil_ptr++) + { + vlinks_t *proc_link; + int first; + + fil_ptr->fdr.ipdFirst = iproc; + first = 1; + for (proc_link = fil_ptr->procs.first; + proc_link != (vlinks_t *) NULL; + proc_link = proc_link->next) + { + int prc_cnt; + proc_t *proc_ptr; + proc_t *proc_end; + + if (proc_link->next == (vlinks_t *) NULL) + prc_cnt = fil_ptr->procs.objects_last_page; + else + prc_cnt = fil_ptr->procs.objects_per_page; + proc_ptr = proc_link->datum->proc; + proc_end = proc_ptr + prc_cnt; + for (; proc_ptr < proc_end; proc_ptr++) + { + symbolS *adr_sym; + unsigned long adr; + + adr_sym = proc_ptr->sym->as_sym; + adr = (S_GET_VALUE (adr_sym) + + bfd_get_section_vma (stdoutput, + S_GET_SEGMENT (adr_sym))); + if (first) + { + /* This code used to force the adr of the very + first fdr to be 0. However, the native tools + don't do that, and I can't remember why it + used to work that way, so I took it out. */ + fil_ptr->fdr.adr = adr; + first = 0; + } + proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr; + if (*bufend - pdr_out < external_pdr_size) + pdr_out = ecoff_add_bytes (buf, bufend, + pdr_out, + external_pdr_size); + (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out); + pdr_out += external_pdr_size; + ++iproc; + } + } + fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst; + } + } + + return offset + iproc * external_pdr_size; +} + +/* Swap out the aux information. */ + +static unsigned long +ecoff_build_aux (backend, buf, bufend, offset) + const struct ecoff_debug_swap *backend; + char **buf; + char **bufend; + unsigned long offset; +{ + int bigendian; + union aux_ext *aux_out; + long iaux; + vlinks_t *file_link; + + bigendian = bfd_big_endian (stdoutput); + + aux_out = (union aux_ext *) (*buf + offset); + + iaux = 0; + + /* The aux entries are stored by file. */ + for (file_link = file_desc.first; + file_link != (vlinks_t *) NULL; + file_link = file_link->next) + { + int fil_cnt; + efdr_t *fil_ptr; + efdr_t *fil_end; + + if (file_link->next == (vlinks_t *) NULL) + fil_cnt = file_desc.objects_last_page; + else + fil_cnt = file_desc.objects_per_page; + fil_ptr = file_link->datum->file; + fil_end = fil_ptr + fil_cnt; + for (; fil_ptr < fil_end; fil_ptr++) + { + vlinks_t *aux_link; + + fil_ptr->fdr.fBigendian = bigendian; + fil_ptr->fdr.iauxBase = iaux; + for (aux_link = fil_ptr->aux_syms.first; + aux_link != (vlinks_t *) NULL; + aux_link = aux_link->next) + { + int aux_cnt; + aux_t *aux_ptr; + aux_t *aux_end; + + if (aux_link->next == (vlinks_t *) NULL) + aux_cnt = fil_ptr->aux_syms.objects_last_page; + else + aux_cnt = fil_ptr->aux_syms.objects_per_page; + aux_ptr = aux_link->datum->aux; + aux_end = aux_ptr + aux_cnt; + for (; aux_ptr < aux_end; aux_ptr++) + { + if (*bufend - (char *) aux_out < sizeof (union aux_ext)) + aux_out = ((union aux_ext *) + ecoff_add_bytes (buf, bufend, + (char *) aux_out, + sizeof (union aux_ext))); + switch (aux_ptr->type) + { + case aux_tir: + (*backend->swap_tir_out) (bigendian, + &aux_ptr->data.ti, + &aux_out->a_ti); + break; + case aux_rndx: + (*backend->swap_rndx_out) (bigendian, + &aux_ptr->data.rndx, + &aux_out->a_rndx); + break; + case aux_dnLow: + AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow, + aux_out); + break; + case aux_dnHigh: + AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh, + aux_out); + break; + case aux_isym: + AUX_PUT_ISYM (bigendian, aux_ptr->data.isym, + aux_out); + break; + case aux_iss: + AUX_PUT_ISS (bigendian, aux_ptr->data.iss, + aux_out); + break; + case aux_width: + AUX_PUT_WIDTH (bigendian, aux_ptr->data.width, + aux_out); + break; + case aux_count: + AUX_PUT_COUNT (bigendian, aux_ptr->data.count, + aux_out); + break; + } + + ++aux_out; + ++iaux; + } + } + fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase; + } + } + + return ecoff_padding_adjust (backend, buf, bufend, + offset + iaux * sizeof (union aux_ext), + (char **) NULL); +} + +/* Copy out the strings from a varray_t. This returns the number of + bytes copied, rather than the new offset. */ + +static unsigned long +ecoff_build_strings (buf, bufend, offset, vp) + char **buf; + char **bufend; + unsigned long offset; + varray_t *vp; +{ + unsigned long istr; + char *str_out; + vlinks_t *str_link; + + str_out = *buf + offset; + + istr = 0; + + for (str_link = vp->first; + str_link != (vlinks_t *) NULL; + str_link = str_link->next) + { + unsigned long str_cnt; + + if (str_link->next == (vlinks_t *) NULL) + str_cnt = vp->objects_last_page; + else + str_cnt = vp->objects_per_page; + + if (*bufend - str_out < str_cnt) + str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt); + + memcpy (str_out, str_link->datum->byte, str_cnt); + str_out += str_cnt; + istr += str_cnt; + } + + return istr; +} + +/* Dump out the local strings. */ + +static unsigned long +ecoff_build_ss (backend, buf, bufend, offset) + const struct ecoff_debug_swap *backend; + char **buf; + char **bufend; + unsigned long offset; +{ + long iss; + vlinks_t *file_link; + + iss = 0; + + for (file_link = file_desc.first; + file_link != (vlinks_t *) NULL; + file_link = file_link->next) + { + int fil_cnt; + efdr_t *fil_ptr; + efdr_t *fil_end; + + if (file_link->next == (vlinks_t *) NULL) + fil_cnt = file_desc.objects_last_page; + else + fil_cnt = file_desc.objects_per_page; + fil_ptr = file_link->datum->file; + fil_end = fil_ptr + fil_cnt; + for (; fil_ptr < fil_end; fil_ptr++) + { + long ss_cnt; + + fil_ptr->fdr.issBase = iss; + ss_cnt = ecoff_build_strings (buf, bufend, offset + iss, + &fil_ptr->strings); + fil_ptr->fdr.cbSs = ss_cnt; + iss += ss_cnt; + } + } + + return ecoff_padding_adjust (backend, buf, bufend, offset + iss, + (char **) NULL); +} + +/* Swap out the file descriptors. */ + +static unsigned long +ecoff_build_fdr (backend, buf, bufend, offset) + const struct ecoff_debug_swap *backend; + char **buf; + char **bufend; + unsigned long offset; +{ + const bfd_size_type external_fdr_size = backend->external_fdr_size; + void (* const swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR)) + = backend->swap_fdr_out; + long ifile; + char *fdr_out; + vlinks_t *file_link; + + ifile = 0; + + fdr_out = *buf + offset; + + for (file_link = file_desc.first; + file_link != (vlinks_t *) NULL; + file_link = file_link->next) + { + int fil_cnt; + efdr_t *fil_ptr; + efdr_t *fil_end; + + if (file_link->next == (vlinks_t *) NULL) + fil_cnt = file_desc.objects_last_page; + else + fil_cnt = file_desc.objects_per_page; + fil_ptr = file_link->datum->file; + fil_end = fil_ptr + fil_cnt; + for (; fil_ptr < fil_end; fil_ptr++) + { + if (*bufend - fdr_out < external_fdr_size) + fdr_out = ecoff_add_bytes (buf, bufend, fdr_out, + external_fdr_size); + (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out); + fdr_out += external_fdr_size; + ++ifile; + } + } + + return offset + ifile * external_fdr_size; +} + +/* Set up the external symbols. These are supposed to be handled by + the backend. This routine just gets the right information and + calls a backend function to deal with it. */ + +static void +ecoff_setup_ext () +{ + register symbolS *sym; + + for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) + { + if (sym->ecoff_symbol == NULL) + continue; + + /* If this is a local symbol, then force the fields to zero. */ + if (! S_IS_EXTERNAL (sym) + && ! S_IS_WEAK (sym) + && S_IS_DEFINED (sym)) + { + sym->ecoff_symbol->ecoff_sym.asym.value = 0; + sym->ecoff_symbol->ecoff_sym.asym.st = (int) st_Nil; + sym->ecoff_symbol->ecoff_sym.asym.sc = (int) sc_Nil; + sym->ecoff_symbol->ecoff_sym.asym.index = indexNil; + } + + obj_ecoff_set_ext (sym, &sym->ecoff_symbol->ecoff_sym); + } +} + +/* Build the ECOFF debugging information. */ + +unsigned long +ecoff_build_debug (hdr, bufp, backend) + HDRR *hdr; + char **bufp; + const struct ecoff_debug_swap *backend; +{ + const bfd_size_type external_pdr_size = backend->external_pdr_size; + tag_t *ptag; + tag_t *ptag_next; + efdr_t *fil_ptr; + int end_warning; + efdr_t *hold_file_ptr; + proc_t * hold_proc_ptr; + symbolS *sym; + char *buf; + char *bufend; + unsigned long offset; + + /* Make sure we have a file. */ + if (first_file == (efdr_t *) NULL) + add_file ((const char *) NULL, 0, 1); + + /* Handle any top level tags. */ + for (ptag = top_tag_head->first_tag; + ptag != (tag_t *) NULL; + ptag = ptag_next) + { + if (ptag->forward_ref != (forward_t *) NULL) + add_unknown_tag (ptag); + + ptag_next = ptag->same_block; + ptag->hash_ptr->tag_ptr = ptag->same_name; + free_tag (ptag); + } + + free_thead (top_tag_head); + + /* Look through the symbols. Add debugging information for each + symbol that has not already received it. */ + hold_file_ptr = cur_file_ptr; + hold_proc_ptr = cur_proc_ptr; + cur_proc_ptr = (proc_t *) NULL; + for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) + { + if (sym->ecoff_symbol != NULL + || sym->ecoff_file == (efdr_t *) NULL + || (sym->bsym->flags & BSF_SECTION_SYM) != 0) + continue; + + cur_file_ptr = sym->ecoff_file; + add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym, + (bfd_vma) 0, S_GET_VALUE (sym), indexNil); + } + cur_proc_ptr = hold_proc_ptr; + cur_file_ptr = hold_file_ptr; + + /* Output an ending symbol for all the files. We have to do this + here for the last file, so we may as well do it for all of the + files. */ + end_warning = 0; + for (fil_ptr = first_file; + fil_ptr != (efdr_t *) NULL; + fil_ptr = fil_ptr->next_file) + { + cur_file_ptr = fil_ptr; + while (cur_file_ptr->cur_scope != (scope_t *) NULL + && cur_file_ptr->cur_scope->prev != (scope_t *) NULL) + { + cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev; + if (! end_warning && ! cur_file_ptr->fake) + { + as_warn (_("Missing .end or .bend at end of file")); + end_warning = 1; + } + } + if (cur_file_ptr->cur_scope != (scope_t *) NULL) + (void) add_ecoff_symbol ((const char *) NULL, + st_End, sc_Text, + (symbolS *) NULL, + (bfd_vma) 0, + (symint_t) 0, + (symint_t) 0); + } + + /* Build the symbolic information. */ + offset = 0; + buf = xmalloc (PAGE_SIZE); + bufend = buf + PAGE_SIZE; + + /* Build the line number information. */ + hdr->cbLineOffset = offset; + offset = ecoff_build_lineno (backend, &buf, &bufend, offset, + &hdr->ilineMax); + hdr->cbLine = offset - hdr->cbLineOffset; + + /* We don't use dense numbers at all. */ + hdr->idnMax = 0; + hdr->cbDnOffset = 0; + + /* We can't build the PDR table until we have built the symbols, + because a PDR contains a symbol index. However, we set aside + space at this point. */ + hdr->ipdMax = proc_cnt; + hdr->cbPdOffset = offset; + if (bufend - (buf + offset) < proc_cnt * external_pdr_size) + (void) ecoff_add_bytes (&buf, &bufend, buf + offset, + proc_cnt * external_pdr_size); + offset += proc_cnt * external_pdr_size; + + /* Build the local symbols. */ + hdr->cbSymOffset = offset; + offset = ecoff_build_symbols (backend, &buf, &bufend, offset); + hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size; + + /* Building the symbols initializes the symbol index in the PDR's. + Now we can swap out the PDR's. */ + (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset); + + /* We don't use optimization symbols. */ + hdr->ioptMax = 0; + hdr->cbOptOffset = 0; + + /* Swap out the auxiliary type information. */ + hdr->cbAuxOffset = offset; + offset = ecoff_build_aux (backend, &buf, &bufend, offset); + hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext); + + /* Copy out the local strings. */ + hdr->cbSsOffset = offset; + offset = ecoff_build_ss (backend, &buf, &bufend, offset); + hdr->issMax = offset - hdr->cbSsOffset; + + /* We don't use relative file descriptors. */ + hdr->crfd = 0; + hdr->cbRfdOffset = 0; + + /* Swap out the file descriptors. */ + hdr->cbFdOffset = offset; + offset = ecoff_build_fdr (backend, &buf, &bufend, offset); + hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size; + + /* Set up the external symbols, which are handled by the BFD back + end. */ + hdr->issExtMax = 0; + hdr->cbSsExtOffset = 0; + hdr->iextMax = 0; + hdr->cbExtOffset = 0; + ecoff_setup_ext (); + + know ((offset & (backend->debug_align - 1)) == 0); + + /* FIXME: This value should be determined from the .verstamp directive, + with reasonable defaults in config files. */ +#ifdef TC_ALPHA + hdr->vstamp = 0x030b; +#else + hdr->vstamp = 0x020b; +#endif + + *bufp = buf; + return offset; +} + +/* Allocate a cluster of pages. */ + +#ifndef MALLOC_CHECK + +static page_type * +allocate_cluster (npages) + unsigned long npages; +{ + register page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE); + +#ifdef ECOFF_DEBUG + if (debug > 3) + fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value); +#endif + + memset (value, 0, npages * PAGE_USIZE); + + return value; +} + + +static page_type *cluster_ptr = NULL; +static unsigned long pages_left = 0; + +#endif /* MALLOC_CHECK */ + +/* Allocate one page (which is initialized to 0). */ + +static page_type * +allocate_page () +{ +#ifndef MALLOC_CHECK + + if (pages_left == 0) + { + pages_left = MAX_CLUSTER_PAGES; + cluster_ptr = allocate_cluster (pages_left); + } + + pages_left--; + return cluster_ptr++; + +#else /* MALLOC_CHECK */ + + page_type *ptr; + + ptr = xmalloc (PAGE_USIZE); + memset (ptr, 0, PAGE_USIZE); + return ptr; + +#endif /* MALLOC_CHECK */ +} + +/* Allocate scoping information. */ + +static scope_t * +allocate_scope () +{ + register scope_t *ptr; + static scope_t initial_scope; + +#ifndef MALLOC_CHECK + + ptr = alloc_counts[(int)alloc_type_scope].free_list.f_scope; + if (ptr != (scope_t *) NULL) + alloc_counts[ (int)alloc_type_scope ].free_list.f_scope = ptr->free; + else + { + register int unallocated = alloc_counts[(int)alloc_type_scope].unallocated; + register page_type *cur_page = alloc_counts[(int)alloc_type_scope].cur_page; + + if (unallocated == 0) + { + unallocated = PAGE_SIZE / sizeof (scope_t); + alloc_counts[(int)alloc_type_scope].cur_page = cur_page = allocate_page (); + alloc_counts[(int)alloc_type_scope].total_pages++; + } + + ptr = &cur_page->scope[--unallocated]; + alloc_counts[(int)alloc_type_scope].unallocated = unallocated; + } + +#else + + ptr = (scope_t *) xmalloc (sizeof (scope_t)); + +#endif + + alloc_counts[(int)alloc_type_scope].total_alloc++; + *ptr = initial_scope; + return ptr; +} + +/* Free scoping information. */ + +static void +free_scope (ptr) + scope_t *ptr; +{ + alloc_counts[(int)alloc_type_scope].total_free++; + +#ifndef MALLOC_CHECK + ptr->free = alloc_counts[(int)alloc_type_scope].free_list.f_scope; + alloc_counts[(int)alloc_type_scope].free_list.f_scope = ptr; +#else + free ((PTR) ptr); +#endif +} + +/* Allocate links for pages in a virtual array. */ + +static vlinks_t * +allocate_vlinks () +{ + register vlinks_t *ptr; + static vlinks_t initial_vlinks; + +#ifndef MALLOC_CHECK + + register int unallocated = alloc_counts[(int)alloc_type_vlinks].unallocated; + register page_type *cur_page = alloc_counts[(int)alloc_type_vlinks].cur_page; + + if (unallocated == 0) + { + unallocated = PAGE_SIZE / sizeof (vlinks_t); + alloc_counts[(int)alloc_type_vlinks].cur_page = cur_page = allocate_page (); + alloc_counts[(int)alloc_type_vlinks].total_pages++; + } + + ptr = &cur_page->vlinks[--unallocated]; + alloc_counts[(int)alloc_type_vlinks].unallocated = unallocated; + +#else + + ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t)); + +#endif + + alloc_counts[(int)alloc_type_vlinks].total_alloc++; + *ptr = initial_vlinks; + return ptr; +} + +/* Allocate string hash buckets. */ + +static shash_t * +allocate_shash () +{ + register shash_t *ptr; + static shash_t initial_shash; + +#ifndef MALLOC_CHECK + + register int unallocated = alloc_counts[(int)alloc_type_shash].unallocated; + register page_type *cur_page = alloc_counts[(int)alloc_type_shash].cur_page; + + if (unallocated == 0) + { + unallocated = PAGE_SIZE / sizeof (shash_t); + alloc_counts[(int)alloc_type_shash].cur_page = cur_page = allocate_page (); + alloc_counts[(int)alloc_type_shash].total_pages++; + } + + ptr = &cur_page->shash[--unallocated]; + alloc_counts[(int)alloc_type_shash].unallocated = unallocated; + +#else + + ptr = (shash_t *) xmalloc (sizeof (shash_t)); + +#endif + + alloc_counts[(int)alloc_type_shash].total_alloc++; + *ptr = initial_shash; + return ptr; +} + +/* Allocate type hash buckets. */ + +static thash_t * +allocate_thash () +{ + register thash_t *ptr; + static thash_t initial_thash; + +#ifndef MALLOC_CHECK + + register int unallocated = alloc_counts[(int)alloc_type_thash].unallocated; + register page_type *cur_page = alloc_counts[(int)alloc_type_thash].cur_page; + + if (unallocated == 0) + { + unallocated = PAGE_SIZE / sizeof (thash_t); + alloc_counts[(int)alloc_type_thash].cur_page = cur_page = allocate_page (); + alloc_counts[(int)alloc_type_thash].total_pages++; + } + + ptr = &cur_page->thash[--unallocated]; + alloc_counts[(int)alloc_type_thash].unallocated = unallocated; + +#else + + ptr = (thash_t *) xmalloc (sizeof (thash_t)); + +#endif + + alloc_counts[(int)alloc_type_thash].total_alloc++; + *ptr = initial_thash; + return ptr; +} + +/* Allocate structure, union, or enum tag information. */ + +static tag_t * +allocate_tag () +{ + register tag_t *ptr; + static tag_t initial_tag; + +#ifndef MALLOC_CHECK + + ptr = alloc_counts[(int)alloc_type_tag].free_list.f_tag; + if (ptr != (tag_t *) NULL) + alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr->free; + else + { + register int unallocated = alloc_counts[(int)alloc_type_tag].unallocated; + register page_type *cur_page = alloc_counts[(int)alloc_type_tag].cur_page; + + if (unallocated == 0) + { + unallocated = PAGE_SIZE / sizeof (tag_t); + alloc_counts[(int)alloc_type_tag].cur_page = cur_page = allocate_page (); + alloc_counts[(int)alloc_type_tag].total_pages++; + } + + ptr = &cur_page->tag[--unallocated]; + alloc_counts[(int)alloc_type_tag].unallocated = unallocated; + } + +#else + + ptr = (tag_t *) xmalloc (sizeof (tag_t)); + +#endif + + alloc_counts[(int)alloc_type_tag].total_alloc++; + *ptr = initial_tag; + return ptr; +} + +/* Free scoping information. */ + +static void +free_tag (ptr) + tag_t *ptr; +{ + alloc_counts[(int)alloc_type_tag].total_free++; + +#ifndef MALLOC_CHECK + ptr->free = alloc_counts[(int)alloc_type_tag].free_list.f_tag; + alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr; +#else + free ((PTR_T) ptr); +#endif +} + +/* Allocate forward reference to a yet unknown tag. */ + +static forward_t * +allocate_forward () +{ + register forward_t *ptr; + static forward_t initial_forward; + +#ifndef MALLOC_CHECK + + register int unallocated = alloc_counts[(int)alloc_type_forward].unallocated; + register page_type *cur_page = alloc_counts[(int)alloc_type_forward].cur_page; + + if (unallocated == 0) + { + unallocated = PAGE_SIZE / sizeof (forward_t); + alloc_counts[(int)alloc_type_forward].cur_page = cur_page = allocate_page (); + alloc_counts[(int)alloc_type_forward].total_pages++; + } + + ptr = &cur_page->forward[--unallocated]; + alloc_counts[(int)alloc_type_forward].unallocated = unallocated; + +#else + + ptr = (forward_t *) xmalloc (sizeof (forward_t)); + +#endif + + alloc_counts[(int)alloc_type_forward].total_alloc++; + *ptr = initial_forward; + return ptr; +} + +/* Allocate head of type hash list. */ + +static thead_t * +allocate_thead () +{ + register thead_t *ptr; + static thead_t initial_thead; + +#ifndef MALLOC_CHECK + + ptr = alloc_counts[(int)alloc_type_thead].free_list.f_thead; + if (ptr != (thead_t *) NULL) + alloc_counts[ (int)alloc_type_thead ].free_list.f_thead = ptr->free; + else + { + register int unallocated = alloc_counts[(int)alloc_type_thead].unallocated; + register page_type *cur_page = alloc_counts[(int)alloc_type_thead].cur_page; + + if (unallocated == 0) + { + unallocated = PAGE_SIZE / sizeof (thead_t); + alloc_counts[(int)alloc_type_thead].cur_page = cur_page = allocate_page (); + alloc_counts[(int)alloc_type_thead].total_pages++; + } + + ptr = &cur_page->thead[--unallocated]; + alloc_counts[(int)alloc_type_thead].unallocated = unallocated; + } + +#else + + ptr = (thead_t *) xmalloc (sizeof (thead_t)); + +#endif + + alloc_counts[(int)alloc_type_thead].total_alloc++; + *ptr = initial_thead; + return ptr; +} + +/* Free scoping information. */ + +static void +free_thead (ptr) + thead_t *ptr; +{ + alloc_counts[(int)alloc_type_thead].total_free++; + +#ifndef MALLOC_CHECK + ptr->free = (thead_t *) alloc_counts[(int)alloc_type_thead].free_list.f_thead; + alloc_counts[(int)alloc_type_thead].free_list.f_thead = ptr; +#else + free ((PTR_T) ptr); +#endif +} + +static lineno_list_t * +allocate_lineno_list () +{ + register lineno_list_t *ptr; + static lineno_list_t initial_lineno_list; + +#ifndef MALLOC_CHECK + + register int unallocated = alloc_counts[(int)alloc_type_lineno].unallocated; + register page_type *cur_page = alloc_counts[(int)alloc_type_lineno].cur_page; + + if (unallocated == 0) + { + unallocated = PAGE_SIZE / sizeof (lineno_list_t); + alloc_counts[(int)alloc_type_lineno].cur_page = cur_page = allocate_page (); + alloc_counts[(int)alloc_type_lineno].total_pages++; + } + + ptr = &cur_page->lineno[--unallocated]; + alloc_counts[(int)alloc_type_lineno].unallocated = unallocated; + +#else + + ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t)); + +#endif + + alloc_counts[(int)alloc_type_lineno].total_alloc++; + *ptr = initial_lineno_list; + return ptr; +} + +void +ecoff_set_gp_prolog_size (sz) + int sz; +{ + if (cur_proc_ptr == 0) + return; + + cur_proc_ptr->pdr.gp_prologue = sz; + if (cur_proc_ptr->pdr.gp_prologue != sz) + { + as_warn (_("GP prologue size exceeds field size, using 0 instead")); + cur_proc_ptr->pdr.gp_prologue = 0; + } + + cur_proc_ptr->pdr.gp_used = 1; +} + +int +ecoff_no_current_file () +{ + return cur_file_ptr == (efdr_t *) NULL; +} + +void +ecoff_generate_asm_lineno () +{ + unsigned int lineno; + char *filename; + lineno_list_t *list; + + as_where (&filename, &lineno); + + if (current_stabs_filename == (char *)NULL + || strcmp (current_stabs_filename, filename)) + add_file (filename, 0, 1); + + list = allocate_lineno_list (); + + list->next = (lineno_list_t *) NULL; + list->file = cur_file_ptr; + list->proc = cur_proc_ptr; + list->frag = frag_now; + list->paddr = frag_now_fix (); + list->lineno = lineno; + + /* We don't want to merge files which have line numbers. */ + cur_file_ptr->fdr.fMerge = 0; + + /* A .loc directive will sometimes appear before a .ent directive, + which means that cur_proc_ptr will be NULL here. Arrange to + patch this up. */ + if (cur_proc_ptr == (proc_t *) NULL) + { + lineno_list_t **pl; + + pl = &noproc_lineno; + while (*pl != (lineno_list_t *) NULL) + pl = &(*pl)->next; + *pl = list; + } + else + { + last_lineno = list; + *last_lineno_ptr = list; + last_lineno_ptr = &list->next; + } +} + +#else + +void +ecoff_generate_asm_lineno () +{ +} + +#endif /* ECOFF_DEBUGGING */ |