diff options
Diffstat (limited to 'gdb/m-isi.h')
| -rw-r--r-- | gdb/m-isi.h | 137 |
1 files changed, 55 insertions, 82 deletions
diff --git a/gdb/m-isi.h b/gdb/m-isi.h index a78cc43..32ac916 100644 --- a/gdb/m-isi.h +++ b/gdb/m-isi.h @@ -1,66 +1,35 @@ -/* -Date: Thu, 2 Apr 87 00:02:42 EST -From: crl@maxwell.physics.purdue.edu (Charles R. LaBrec) -Message-Id: <8704020502.AA01744@maxwell.physics.purdue.edu> -To: bug-gdb@prep.ai.mit.edu -Subject: gdb for ISI Optimum V - -Here is an m-isi-ov.h file for gdb version 2.1. It supports the 68881 -registers, and tracks down the function prologue (since the ISI cc -puts it at the end of the function and branches to it if not -optimizing). Also included are diffs to core.c, findvar.c, and -inflow.c, since the original code assumed that registers are an int in -the user struct, which isn't the case for 68020's with 68881's (and -not using the NEW_SUN_PTRACE). I have not fixed the bugs associated -with the other direction (writing registers back to the user struct). -I have also included a diff that turns m68k-pinsn.c into isi-pinsn.c, -which is needed since the 3.05 release of as does not understand -floating point ops, and it compiles incorrectly under "cc -20" - -I have used gdb for a while now, and it seems to work relatively well, -but I do not guarantee that it is perfect. The more that use it, the -faster the bugs will get shaken out. One bug I know of is not in gdb, -but in the assembler. It seems to screw up the .stabs of variables. -For externs, this is not important since gdb uses the global symbol -value, but for statics, this makes gdb unable to find them. I am -currently trying to track it down. - -As an aside, I notice that only global functions are used as symbols -to print as relative addresses, i.e. "<function + offset>", and not -static functions, which end up printing as large offsets from the last -global one. Would there be a problem if static functions were also -recorded as misc functions in read_dbx_symtab? - -Charles LaBrec -crl @ maxwell.physics.purdue.edu - - Definitions to make GDB run on a ISI Optimum V (3.05) under 4.2bsd. - - Copyright (C) 1987 Free Software Foundation, Inc. - -GDB is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY. No author or distributor accepts responsibility to anyone -for the consequences of using it or for whether it serves any -particular purpose or works at all, unless he says so in writing. -Refer to the GDB General Public License for full details. - -Everyone is granted permission to copy, modify and redistribute GDB, -but only under the conditions described in the GDB General Public -License. A copy of this license is supposed to have been given to you -along with GDB so you can know your rights and responsibilities. It -should be in a file named COPYING. Among other things, the copyright -notice and this notice must be preserved on all copies. - -In other words, go ahead and share GDB, but don't try to stop -anyone else from sharing it farther. Help stamp out software hoarding! -*/ +/* Definitions to make GDB run on an ISI Optimum V (3.05) under 4.3bsd. + Copyright (C) 1987, 1989 Free Software Foundation, Inc. +This file is part of GDB. + +GDB 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 1, or (at your option) +any later version. + +GDB 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 GDB; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* This has not been tested on ISI's running BSD 4.2, but it will probably + work. */ /* Identify this machine */ #ifndef ISI68K #define ISI68K #endif +/* Define the bit, byte, and word ordering of the machine. */ +#define BITS_BIG_ENDIAN +#define BYTES_BIG_ENDIAN +#define WORDS_BIG_ENDIAN + /* Define this if the C compiler puts an underscore at the front of external names before giving them to the linker. */ @@ -104,11 +73,13 @@ read_memory_integer (read_register (SP_REGNUM), 4) /* This is the amount to subtract from u.u_ar0 to get the offset in the core file of the register values. */ -#define KERNEL_U_ADDR 0x10800000 +/*#define KERNEL_U_ADDR 0x10800000*/ +#define KERNEL_U_ADDR 0 /* Address of end of stack space. */ -#define STACK_END_ADDR 0x10000000 +/*#define STACK_END_ADDR 0x10000000*/ +#define STACK_END_ADDR 0xfffe000 /* Stack grows downward. */ @@ -130,7 +101,7 @@ read_memory_integer (read_register (SP_REGNUM), 4) /* Amount PC must be decremented by after a breakpoint. This is often the number of bytes in BREAKPOINT - but not always. + but not always. On the ISI, the kernel resets the pc to the trap instr */ #define DECR_PC_AFTER_BREAK 0 @@ -154,7 +125,6 @@ read_memory_integer (read_register (SP_REGNUM), 4) #define REGISTER_TYPE long /* Number of machine registers */ - #define NUM_REGS 29 /* Initializer for an array of names of registers. @@ -181,23 +151,15 @@ read_memory_integer (read_register (SP_REGNUM), 4) #define FP0_REGNUM 18 /* Floating point register 0 */ #define FPC_REGNUM 26 /* 68881 control register */ -#ifdef BSD43_ISI40D -#define BLOCKFUDGE 0x400000 -#else -#define BLOCKFUDGE 0 -#endif -#define REGISTER_U_ADDR(addr, blockend, regno) \ -{ blockend -= BLOCKFUDGE; \ - if (regno < 2) addr = blockend - 0x18 + regno * 4; \ - else if (regno < 8) addr = blockend - 0x54 + regno * 4; \ - else if (regno < 10) addr = blockend - 0x30 + regno * 4;\ - else if (regno < 15) addr = blockend - 0x5c + regno * 4;\ - else if (regno < 16) addr = blockend - 0x1c; \ - else if (regno < 18) addr = blockend - 0x44 + regno * 4;\ - else if (regno < 26) addr = (int) ((struct user *)0)->u_68881_regs \ - + (regno - 18) * 12; \ - else if (regno < 29) addr = (int) ((struct user *)0)->u_68881_regs \ - + 8 * 12 + (regno - 26) * 4; \ +/* expects blockend to be u.u_ar0 */ +extern int rloc[]; /* Defined in isi-dep.c */ +#define REGISTER_U_ADDR(addr, blockend, regno) \ +{ blockend &= UPAGES*NBPG - 1; \ + if (regno < 18) addr = (int)blockend + rloc[regno]*4; \ + else if (regno < 26) addr = (int) &((struct user *)0)->u_68881_regs \ + + (regno - 18) * 12; \ + else if (regno < 29) addr = (int) &((struct user *)0)->u_68881_regs \ + + 8 * 12 + (regno - 26) * 4; \ } /* Total amount of space needed to store our copies of the machine's @@ -302,15 +264,24 @@ read_memory_integer (read_register (SP_REGNUM), 4) /* In the case of the ISI, the frame's nominal address is the address of a 4-byte word containing the calling frame's address. */ -#define FRAME_CHAIN(thisframe) (read_memory_integer ((thisframe)->frame, 4)) +#define FRAME_CHAIN(thisframe) \ + (outside_startup_file ((thisframe)->pc) ? \ + read_memory_integer ((thisframe)->frame, 4) :\ + 0) #define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && (FRAME_SAVED_PC (thisframe) >= first_object_file_end)) + (chain != 0 && outside_startup_file (FRAME_SAVED_PC (thisframe))) #define FRAME_CHAIN_COMBINE(chain, thisframe) (chain) /* Define other aspects of the stack frame. */ +/* A macro that tells us whether the function invocation represented + by FI does not have a frame on the stack associated with it. If it + does not, FRAMELESS is set to 1, else 0. */ +#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \ + FRAMELESS_LOOK_FOR_PROLOGUE(FI, FRAMELESS) + #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4)) #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) @@ -411,8 +382,10 @@ retry: \ (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 4; \ } -/* Compensate for lack of `vprintf' function. */ -#define vprintf(format, ap) _doprnt (format, ap, stdout) +/* Compensate for lack of `vprintf' function. */ +#ifndef HAVE_VPRINTF +#define vprintf(format, ap) _doprnt (format, ap, stdout) +#endif /* Things needed for making the inferior call functions. */ @@ -468,7 +441,7 @@ retry: \ movew ccr,-(sp) /..* The arguments are pushed at this point by GDB; no code is needed in the dummy for this. - The CALL_DUMMY_START_OFFSET gives the position of + The CALL_DUMMY_START_OFFSET gives the position of the following jsr instruction. *../ jsr @#32323232 addl #69696969,sp |