diff options
| -rw-r--r-- | gdb/ChangeLog | 43 | ||||
| -rw-r--r-- | gdb/config/mips/tm-mips.h | 1 | ||||
| -rw-r--r-- | gdb/configure.in | 2 | ||||
| -rw-r--r-- | gdb/elfread.c | 19 | ||||
| -rw-r--r-- | gdb/mips-tdep.c | 199 | ||||
| -rw-r--r-- | gdb/mipsread.c | 3576 |
6 files changed, 203 insertions, 3637 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 5bb2353..5d4786b 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,46 @@ +Mon Dec 6 12:01:37 1993 Ian Lance Taylor (ian@tweedledumb.cygnus.com) + + Added Irix 5 support. + * configure.in (mips-sgi-irix5*): New host and target. Use irix5 + for both. + * config/mips/irix5.mh, config/mips/irix5.mt, + config/mips/xm-irix5.h, config/mips/nm-irix5.h, + config/mips/tm-irix5.h, irix5-nat.c: New files for Irix 5 support. + * mdebugread.c: New file, split out of mipsread.c. Added + elfmdebug_build_psymtabs routine. Added some checks on external + symbols. Changed code to keep ecoff_debug_info and + ecoff_debug_swap structs in the psymtab and in global pointers + rather than retrieving them from the bfd. Also changed to keep + the pending list with the psymtab rather than the objfile (each + psymtab for a single objfile points to the same pending list). + * mipsread.c: Bulk of file moved into mdebugread.c, leaving just + the sym_fns. + * Makefile.in (SFILES): Added mdebugread.c. + (OBS): Added mdebugread.o. + (mdebugread.o): New target. + * symfile.h: Declare mdebug_build_psymtabs and + elfmdebug_build_psymtabs. + * elfread.c (struct elfinfo): Added mdebugsect field. + (elf_locate_sections): Remember location of .mdebug section. + (elf_symfile_read): Call elfmdebug_build_psymtabs on .mdebug + section. + * infrun.c (AT_FUNCTION_START): Set to 0 if not already defined. + (wait_for_inferior): Use AT_FUNCTION_START if it is defined to see + if PC is at the start of a function. + * mips-tdep.c (read_next_frame_reg): Use SIGFRAME_REG_SIZE, and + give it a default definition. + (mips_skip_prologue): Skip instructions which initialize $gp + register. + (in_sigtramp): New procedure, moved in from mipsread.c. + * config/mips/tm-mips.h: Declare in_sigtramp. + + * serial.h (serial_fdopen): Make parameter const to match + function definition. + +Fri Dec 3 14:20:43 1993 Stu Grossman (grossman at cygnus.com) + + * config/mips/irix4.mh: Enable ser-tcp.o. + Tue Nov 30 15:24:24 1993 Ian Lance Taylor (ian@tweedledumb.cygnus.com) * Makefile.in (check): Do not use subdir_do, so that diff --git a/gdb/config/mips/tm-mips.h b/gdb/config/mips/tm-mips.h index 4727661..916dba3 100644 --- a/gdb/config/mips/tm-mips.h +++ b/gdb/config/mips/tm-mips.h @@ -55,6 +55,7 @@ extern CORE_ADDR mips_skip_prologue PARAMS ((CORE_ADDR addr, int lenient)); /* Are we currently handling a signal */ +extern int in_sigtramp PARAMS ((CORE_ADDR, char *)); #define IN_SIGTRAMP(pc, name) in_sigtramp(pc, name) /* Stack grows downward. */ diff --git a/gdb/configure.in b/gdb/configure.in index b5c84e7..6379428 100644 --- a/gdb/configure.in +++ b/gdb/configure.in @@ -88,6 +88,7 @@ mips-dec-*) gdb_host=decstation ;; mips-little-*) gdb_host=littlemips ;; mips-sgi-irix3*) gdb_host=irix3 ;; mips-sgi-irix4*) gdb_host=irix4 ;; +mips-sgi-irix5*) gdb_host=irix5 ;; mips-sony-*) gdb_host=news-mips ;; mips-*-sysv*) gdb_host=riscos ;; mips-*-riscos*) gdb_host=riscos ;; @@ -257,6 +258,7 @@ mips-dec-*) gdb_target=decstation ;; mips-idt-ecoffl*) gdb_target=idtl ;; mips-idt-ecoff*) gdb_target=idt ;; mips-little-*) gdb_target=littlemips ;; +mips-sgi-irix5*) gdb_target=irix5 ;; mips-sgi-*) gdb_target=irix3 ;; mips-sony-*) gdb_target=bigmips ;; mips-*-sysv*) gdb_target=bigmips ;; diff --git a/gdb/elfread.c b/gdb/elfread.c index 1a0eee5..11a8c0e 100644 --- a/gdb/elfread.c +++ b/gdb/elfread.c @@ -45,6 +45,7 @@ struct elfinfo { unsigned int lnsize; /* Size of dwarf line number section */ asection *stabsect; /* Section pointer for .stab section */ asection *stabindexsect; /* Section pointer for .stab.index section */ + asection *mdebugsect; /* Section pointer for .mdebug section */ }; /* Various things we might complain about... */ @@ -136,6 +137,10 @@ elf_locate_sections (ignore_abfd, sectp, eip) { ei -> stabindexsect = sectp; } + else if (STREQ (sectp -> name, ".mdebug")) + { + ei -> mdebugsect = sectp; + } } #if 0 /* Currently unused */ @@ -447,7 +452,8 @@ elf_symtab_read (abfd, addr, objfile) format to look for: FIXME!!! dwarf_build_psymtabs() builds psymtabs for DWARF symbols; - elfstab_build_psymtabs() handles STABS symbols. + elfstab_build_psymtabs() handles STABS symbols; + mdebug_build_psymtabs() handles ECOFF debugging information. Note that ELF files have a "minimal" symbol table, which looks a lot like a COFF symbol table, but has only the minimal information necessary @@ -519,6 +525,17 @@ elf_symfile_read (objfile, section_offsets, mainline) (file_ptr) elf_sect->sh_offset, /* .stabstr offset */ elf_sect->sh_size); /* .stabstr size */ } + if (ei.mdebugsect) + { + const struct ecoff_debug_swap *swap; + + /* .mdebug section, presumably holding ECOFF debugging + information. */ + swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; + if (swap) + elfmdebug_build_psymtabs (objfile, swap, ei.mdebugsect, + section_offsets); + } if (!have_partial_symbols ()) { diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c index c5f870f..454ab73 100644 --- a/gdb/mips-tdep.c +++ b/gdb/mips-tdep.c @@ -78,17 +78,19 @@ read_next_frame_reg(fi, regno) /* If it is the frame for sigtramp we have a complete sigcontext immediately below the frame and we get the saved registers from there. If the stack layout for sigtramp changes we might have to change these - constants and the companion fixup_sigtramp in mipsread.c */ + constants and the companion fixup_sigtramp in mdebugread.c */ #ifndef SIGFRAME_BASE #define SIGFRAME_BASE 0x12c /* sizeof(sigcontext) */ #define SIGFRAME_PC_OFF (-SIGFRAME_BASE + 2 * 4) #define SIGFRAME_REGSAVE_OFF (-SIGFRAME_BASE + 3 * 4) +#define SIGFRAME_REG_SIZE 4 #endif for (; fi; fi = fi->next) if (in_sigtramp(fi->pc, 0)) { int offset; if (regno == PC_REGNUM) offset = SIGFRAME_PC_OFF; - else if (regno < 32) offset = SIGFRAME_REGSAVE_OFF + regno * 4; + else if (regno < 32) offset = (SIGFRAME_REGSAVE_OFF + + regno * SIGFRAME_REG_SIZE); else return 0; return read_memory_integer(fi->frame + offset, 4); } @@ -185,7 +187,7 @@ heuristic_proc_desc(start_pc, limit_pc, next_frame) CORE_ADDR cur_pc; int frame_size; int has_frame_reg = 0; - int reg30; /* Value of $r30. Used by gcc for frame-pointer */ + int reg30 = 0; /* Value of $r30. Used by gcc for frame-pointer */ unsigned long reg_mask = 0; if (start_pc == 0) return NULL; @@ -224,7 +226,7 @@ heuristic_proc_desc(start_pc, limit_pc, next_frame) alloca_adjust = reg30 - (sp + (word & 0xffff)); if (alloca_adjust > 0) { /* FP > SP + frame_size. This may be because - /* of an alloca or somethings similar. + * of an alloca or somethings similar. * Fix sp to "pre-alloca" value, and try again. */ sp += alloca_adjust; @@ -376,7 +378,6 @@ init_extra_frame_info(fci) { int ireg; CORE_ADDR reg_position; - unsigned long mask; /* r0 bit means kernel trap */ int kernel_trap = PROC_REG_MASK(proc_desc) & 1; @@ -390,99 +391,101 @@ init_extra_frame_info(fci) if (proc_desc == &temp_proc_desc) *fci->saved_regs = temp_saved_regs; - else if (/* In any frame other than the innermost, we assume that all - registers have been saved. This assumes that all register - saves in a function happen before the first function - call. */ - fci->next != NULL - - /* In a dummy frame we know exactly where things are saved. */ - || PROC_DESC_IS_DUMMY (proc_desc) - - /* Not sure exactly what kernel_trap means, but if it means - the kernel saves the registers without a prologue doing it, - we better not examine the prologue to see whether registers - have been saved yet. */ - || kernel_trap) + else { - /* All the registers which will be saved have been saved, so we - can believe the proc_desc. */ - - /* find which general-purpose registers were saved */ - reg_position = fci->frame + PROC_REG_OFFSET(proc_desc); - mask = kernel_trap ? 0xFFFFFFFF : PROC_REG_MASK(proc_desc); - for (ireg= 31; mask; --ireg, mask <<= 1) - if (mask & 0x80000000) + /* What registers have been saved? Bitmasks. */ + unsigned long gen_mask, float_mask; + + gen_mask = kernel_trap ? 0xFFFFFFFF : PROC_REG_MASK(proc_desc); + float_mask = kernel_trap ? 0xFFFFFFFF : PROC_FREG_MASK(proc_desc); + + if (/* In any frame other than the innermost, we assume that all + registers have been saved. This assumes that all register + saves in a function happen before the first function + call. */ + fci->next == NULL + + /* In a dummy frame we know exactly where things are saved. */ + && !PROC_DESC_IS_DUMMY (proc_desc) + + /* Not sure exactly what kernel_trap means, but if it means + the kernel saves the registers without a prologue doing it, + we better not examine the prologue to see whether registers + have been saved yet. */ + && !kernel_trap) + { + /* We need to figure out whether the registers that the proc_desc + claims are saved have been saved yet. */ + + CORE_ADDR addr; + int status; + char buf[4]; + unsigned long inst; + + /* Bitmasks; set if we have found a save for the register. */ + unsigned long gen_save_found = 0; + unsigned long float_save_found = 0; + + for (addr = PROC_LOW_ADDR (proc_desc); + addr < fci->pc && (gen_mask != gen_save_found + || float_mask != float_save_found); + addr += 4) + { + status = read_memory_nobpt (addr, buf, 4); + if (status) + memory_error (status, addr); + inst = extract_unsigned_integer (buf, 4); + if (/* sw reg,n($sp) */ + (inst & 0xffe00000) == 0xafa00000 + + /* sw reg,n($r30) */ + || (inst & 0xffe00000) == 0xafc00000) + { + /* It might be possible to use the instruction to + find the offset, rather than the code below which + is based on things being in a certain order in the + frame, but figuring out what the instruction's offset + is relative to might be a little tricky. */ + int reg = (inst & 0x001f0000) >> 16; + gen_save_found |= (1 << reg); + } + else if (/* swc1 freg,n($sp) */ + (inst & 0xffe00000) == 0xe7a00000 + + /* swc1 freg,n($r30) */ + || (inst & 0xffe00000) == 0xe7c00000) + { + int reg = ((inst & 0x001f0000) >> 16); + float_save_found |= (1 << reg); + } + } + gen_mask = gen_save_found; + float_mask = float_save_found; + } + + /* Fill in the offsets for the registers which gen_mask says + were saved. */ + reg_position = fci->frame + PROC_REG_OFFSET (proc_desc); + for (ireg= 31; gen_mask; --ireg, gen_mask <<= 1) + if (gen_mask & 0x80000000) { fci->saved_regs->regs[ireg] = reg_position; reg_position -= 4; } - /* find which floating-point registers were saved */ - reg_position = fci->frame + PROC_FREG_OFFSET(proc_desc); + /* Fill in the offsets for the registers which float_mask says + were saved. */ + reg_position = fci->frame + PROC_FREG_OFFSET (proc_desc); /* The freg_offset points to where the first *double* register is saved. So skip to the high-order word. */ reg_position += 4; - mask = kernel_trap ? 0xFFFFFFFF : PROC_FREG_MASK(proc_desc); - for (ireg = 31; mask; --ireg, mask <<= 1) - if (mask & 0x80000000) + for (ireg = 31; float_mask; --ireg, float_mask <<= 1) + if (float_mask & 0x80000000) { fci->saved_regs->regs[FP0_REGNUM+ireg] = reg_position; reg_position -= 4; } } - else - { - /* We need to figure out whether the registers that the proc_desc - claims are saved have been saved yet. */ - - CORE_ADDR addr; - int status; - char buf[4]; - unsigned long inst; - /* Bitmasks; set if the proc_desc claims the register is saved and we - haven't found a save instruction for it yet. */ - unsigned long gen_mask, float_mask; - - gen_mask = PROC_REG_MASK (proc_desc); - float_mask = PROC_FREG_MASK (proc_desc); - - for (addr = PROC_LOW_ADDR (proc_desc); - addr < fci->pc && (gen_mask | float_mask); - addr += 4) - { - status = read_memory_nobpt (addr, buf, 4); - if (status) - memory_error (status, addr); - inst = extract_unsigned_integer (buf, 4); - if (/* sw reg,n($sp) */ - (inst & 0xffe00000) == 0xafa00000 - - /* sw reg,n($r30) */ - || (inst & 0xffe00000) == 0xafc00000) - { - /* We assume that all saves are relative to the - PROC_FRAME_REG, which is what we used to set up - ->frame. */ - int reg = (inst & 0x001f0000) >> 16; - if (gen_mask & (1 << reg)) - fci->saved_regs.regs[reg] = fci->frame + (inst & 0xffff); - gen_mask &= ~(1 << reg); - } - else if (/* swc1 freg,n($sp) */ - (inst & 0xffe00000) == 0xe7a00000 - - /* swc1 freg,n($r30) */ - (inst & 0xffe00000) == 0xe7c00000) - { - int reg = ((inst & 0x001f0000) >> 16); - if (float_mask & (1 << reg)) - fci->saved_regs.regs[FP0_REGNUM + reg] - = fci->frame + (inst & 0xffff); - float_mask &= ~(1 << reg); - } - } - } /* hack: if argument regs are saved, guess these contain args */ if ((PROC_REG_MASK(proc_desc) & 0xF0) == 0) fci->num_args = -1; @@ -566,7 +569,7 @@ mips_push_arguments(nargs, args, sp, struct_return, struct_addr) } /* MASK(i,j) == (1<<i) + (1<<(i+1)) + ... + (1<<j)). Assume i<=j<31. */ -#define MASK(i,j) ((1 << (j)+1)-1 ^ (1 << (i))-1) +#define MASK(i,j) (((1 << ((j)+1))-1) ^ ((1 << (i))-1)) void mips_push_dummy_frame() @@ -713,7 +716,6 @@ mips_print_register (regnum, all) int regnum, all; { unsigned char raw_buffer[MAX_REGISTER_RAW_SIZE]; - REGISTER_TYPE val; /* Get the data in raw format. */ if (read_relative_register_raw_bytes (regnum, raw_buffer)) @@ -847,8 +849,6 @@ mips_skip_prologue (pc, lenient) CORE_ADDR pc; int lenient; { - struct symbol *f; - struct block *b; unsigned long inst; int offset; int seen_sp_adjust = 0; @@ -885,6 +885,13 @@ mips_skip_prologue (pc, lenient) continue; else if ((inst & 0xFF9F07FF) == 0x00800021) /* move reg,$a0-$a3 */ continue; + else if ((inst & 0xffff0000) == 0x3c1c0000) /* lui $gp,n */ + continue; + else if ((inst & 0xffff0000) == 0x279c0000) /* addiu $gp,$gp,n */ + continue; + else if (inst == 0x0399e021 /* addu $gp,$gp,$t9 */ + || inst == 0x033ce021) /* addu $gp,$t9,$gp */ + continue; else break; } @@ -976,6 +983,22 @@ mips_store_return_value (valtype, valbuf) write_register_bytes(REGISTER_BYTE (regnum), raw_buffer, TYPE_LENGTH (valtype)); } +/* These exist in mdebugread.c. */ +extern CORE_ADDR sigtramp_address, sigtramp_end; +extern void fixup_sigtramp PARAMS ((void)); + +/* Exported procedure: Is PC in the signal trampoline code */ + +int +in_sigtramp (pc, ignore) + CORE_ADDR pc; + char *ignore; /* function name */ +{ + if (sigtramp_address == 0) + fixup_sigtramp (); + return (pc >= sigtramp_address && pc < sigtramp_end); +} + static void reinit_frame_cache_sfunc PARAMS ((char *, int, struct cmd_list_element *)); diff --git a/gdb/mipsread.c b/gdb/mipsread.c index 3a744e8..e47b251 100644 --- a/gdb/mipsread.c +++ b/gdb/mipsread.c @@ -20,356 +20,43 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -/* This module provides three functions: mipscoff_symfile_init, - which initializes to read a symbol file; mipscoff_new_init, which - discards existing cached information when all symbols are being - discarded; and mipscoff_symfile_read, which reads a symbol table - from a file. - - mipscoff_symfile_read only does the minimum work necessary for letting the - user "name" things symbolically; it does not read the entire symtab. - Instead, it reads the external and static symbols and puts them in partial - symbol tables. When more extensive information is requested of a - file, the corresponding partial symbol table is mutated into a full - fledged symbol table by going back and reading the symbols - for real. mipscoff_psymtab_to_symtab() is called indirectly through - a pointer in the psymtab to do this. - - ECOFF symbol tables are mostly written in the byte order of the - target machine. However, one section of the table (the auxiliary - symbol information) is written in the host byte order. There is a - bit in the other symbol info which describes which host byte order - was used. ECOFF thereby takes the trophy from Intel `b.out' for - the most brain-dead adaptation of a file format to byte order. - - This module can read all four of the known byte-order combinations, - on any type of host. */ +/* Read symbols from an ECOFF file. Most of the work is done in + mdebugread.c. */ #include "defs.h" #include "symtab.h" -#include "gdbtypes.h" -#include "gdbcore.h" #include "symfile.h" #include "objfiles.h" -#include "obstack.h" #include "buildsym.h" #include "stabsread.h" -#include "complaints.h" - -/* These are needed if the tm.h file does not contain the necessary - mips specific definitions. */ - -#ifndef MIPS_EFI_SYMBOL_NAME -#define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__" -#include "coff/sym.h" -#include "coff/symconst.h" -typedef struct mips_extra_func_info { - long numargs; - PDR pdr; -} *mips_extra_func_info_t; -#ifndef RA_REGNUM -#define RA_REGNUM 0 -#endif -#endif - -#ifdef USG -#include <sys/types.h> -#endif - -#include <sys/param.h> -#include <sys/file.h> -#include <sys/stat.h> -#include <string.h> - #include "gdb-stabs.h" -#include "bfd.h" - #include "coff/internal.h" -#include "coff/ecoff.h" /* COFF-like aspects of ecoff files */ - -/* FIXME: coff/internal.h and aout/aout64.h both define N_ABS. We - want the definition from aout/aout64.h. */ -#undef N_ABS - -#include "libaout.h" /* Private BFD a.out information. */ -#include "aout/aout64.h" -#include "aout/stab_gnu.h" /* STABS information */ - -/* FIXME: libcoff.h and libaout.h both define a couple of macros. We - don't use them. */ -#undef exec_hdr -#undef obj_sym_filepos - +#include "coff/ecoff.h" #include "libcoff.h" /* Private BFD COFF information. */ #include "libecoff.h" /* Private BFD ECOFF information. */ -#include "expression.h" -#include "language.h" /* Needed inside partial-stab.h */ - -/* Provide a default mapping from a ecoff register number to a gdb REGNUM. */ -#ifndef ECOFF_REG_TO_REGNUM -#define ECOFF_REG_TO_REGNUM(num) (num) -#endif - -/* Information is passed among various mipsread routines for accessing - symbol files. A pointer to this structure is kept in the sym_private - field of the objfile struct. */ - -struct ecoff_symfile_info { - struct mips_pending **pending_list; -}; -#define ECOFF_SYMFILE_INFO(o) ((struct ecoff_symfile_info *)((o)->sym_private)) -#define ECOFF_PENDING_LIST(o) (ECOFF_SYMFILE_INFO(o)->pending_list) - - -/* Each partial symbol table entry contains a pointer to private data - for the read_symtab() function to use when expanding a partial - symbol table entry to a full symbol table entry. - - For mipsread this structure contains the index of the FDR that this - psymtab represents and a pointer to the BFD that the psymtab was - created from. */ - -#define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) -#define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) -#define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd) - -struct symloc -{ - int fdr_idx; - bfd *cur_bfd; - EXTR *extern_tab; /* Pointer to external symbols for this file. */ - int extern_count; /* Size of extern_tab. */ - enum language pst_language; -}; - -/* Things we import explicitly from other modules */ - -extern int info_verbose; - -/* Various complaints about symbol reading that don't abort the process */ - -struct complaint bad_file_number_complaint = -{"bad file number %d", 0, 0}; - -struct complaint index_complaint = -{"bad aux index at symbol %s", 0, 0}; - -struct complaint aux_index_complaint = -{"bad proc end in aux found from symbol %s", 0, 0}; - -struct complaint block_index_complaint = -{"bad aux index at block symbol %s", 0, 0}; - -struct complaint unknown_ext_complaint = -{"unknown external symbol %s", 0, 0}; - -struct complaint unknown_sym_complaint = -{"unknown local symbol %s", 0, 0}; - -struct complaint unknown_st_complaint = -{"with type %d", 0, 0}; - -struct complaint block_overflow_complaint = -{"block containing %s overfilled", 0, 0}; - -struct complaint basic_type_complaint = -{"cannot map MIPS basic type 0x%x for %s", 0, 0}; - -struct complaint unknown_type_qual_complaint = -{"unknown type qualifier 0x%x", 0, 0}; - -struct complaint array_index_type_complaint = -{"illegal array index type for %s, assuming int", 0, 0}; - -struct complaint bad_tag_guess_complaint = -{"guessed tag type of %s incorrectly", 0, 0}; - -struct complaint block_member_complaint = -{"declaration block contains unhandled symbol type %d", 0, 0}; - -struct complaint stEnd_complaint = -{"stEnd with storage class %d not handled", 0, 0}; - -struct complaint unknown_mips_symtype_complaint = -{"unknown symbol type 0x%x", 0, 0}; - -struct complaint stab_unknown_complaint = -{"unknown stabs symbol %s", 0, 0}; - -struct complaint pdr_for_nonsymbol_complaint = -{"PDR for %s, but no symbol", 0, 0}; - -struct complaint pdr_static_symbol_complaint = -{"can't handle PDR for static proc at 0x%lx", 0, 0}; - -struct complaint bad_setjmp_pdr_complaint = -{"fixing bad setjmp PDR from libc", 0, 0}; - -struct complaint bad_fbitfield_complaint = -{"can't handle TIR fBitfield for %s", 0, 0}; - -struct complaint bad_continued_complaint = -{"illegal TIR continued for %s", 0, 0}; - -struct complaint bad_rfd_entry_complaint = -{"bad rfd entry for %s: file %d, index %d", 0, 0}; - -struct complaint unexpected_type_code_complaint = -{"unexpected type code for %s", 0, 0}; - -struct complaint unable_to_cross_ref_complaint = -{"unable to cross ref btTypedef for %s", 0, 0}; - -struct complaint illegal_forward_tq0_complaint = -{"illegal tq0 in forward typedef for %s", 0, 0}; - -struct complaint illegal_forward_bt_complaint = -{"illegal bt %d in forward typedef for %s", 0, 0}; - -struct complaint bad_linetable_guess_complaint = -{"guessed size of linetable for %s incorrectly", 0, 0}; - -/* Macros and extra defs */ - -/* Puns: hard to find whether -g was used and how */ - -#define MIN_GLEVEL GLEVEL_0 -#define compare_glevel(a,b) \ - (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ - ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) - -/* Things that really are local to this module */ - -/* Remember what we deduced to be the source language of this psymtab. */ - -static enum language psymtab_language = language_unknown; - -/* Current BFD. */ - -static bfd *cur_bfd; - -/* Pointer to current file decriptor record, and its index */ - -static FDR *cur_fdr; -static int cur_fd; - -/* Index of current symbol */ - -static int cur_sdx; - -/* Note how much "debuggable" this image is. We would like - to see at least one FDR with full symbols */ - -static max_gdbinfo; -static max_glevel; - -/* When examining .o files, report on undefined symbols */ - -static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; - -/* Pseudo symbol to use when putting stabs into the symbol table. */ - -static char stabs_symbol[] = STABS_SYMBOL; - -/* Extra builtin types */ - -struct type *builtin_type_complex; -struct type *builtin_type_double_complex; -struct type *builtin_type_fixed_dec; -struct type *builtin_type_float_dec; -struct type *builtin_type_string; - -/* Forward declarations */ - -static void -read_mips_symtab PARAMS ((struct objfile *, struct section_offsets *)); - -static void -read_the_mips_symtab PARAMS ((bfd *)); - -static int -upgrade_type PARAMS ((int, struct type **, int, union aux_ext *, int, char *)); - -static void -parse_partial_symbols PARAMS ((struct objfile *, - struct section_offsets *)); - -static int -cross_ref PARAMS ((int, union aux_ext *, struct type **, enum type_code, - char **, int, char *)); - -static void -fixup_sigtramp PARAMS ((void)); - -static struct symbol * -new_symbol PARAMS ((char *)); - -static struct type * -new_type PARAMS ((char *)); - -static struct block * -new_block PARAMS ((int)); - -static struct symtab * -new_symtab PARAMS ((char *, int, int, struct objfile *)); - -static struct linetable * -new_linetable PARAMS ((int)); - -static struct blockvector * -new_bvect PARAMS ((int)); - -static int -parse_symbol PARAMS ((SYMR *, union aux_ext *, char *, int)); - -static struct type * -parse_type PARAMS ((int, union aux_ext *, unsigned int, int *, int, char *)); - -static struct symbol * -mylookup_symbol PARAMS ((char *, struct block *, enum namespace, - enum address_class)); - -static struct block * -shrink_block PARAMS ((struct block *, struct symtab *)); - -static PTR -xzalloc PARAMS ((unsigned int)); - static void -sort_blocks PARAMS ((struct symtab *)); - -static int -compare_blocks PARAMS ((const void *, const void *)); - -static struct partial_symtab * -new_psymtab PARAMS ((char *, struct objfile *)); +mipscoff_new_init PARAMS ((struct objfile *)); static void -psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *)); +mipscoff_symfile_init PARAMS ((struct objfile *)); static void -add_block PARAMS ((struct block *, struct symtab *)); +mipscoff_symfile_read PARAMS ((struct objfile *, struct section_offsets *, + int)); static void -add_symbol PARAMS ((struct symbol *, struct block *)); - -static int -add_line PARAMS ((struct linetable *, int, CORE_ADDR, int)); +mipscoff_symfile_finish PARAMS ((struct objfile *)); -static struct linetable * -shrink_linetable PARAMS ((struct linetable *)); +static struct section_offsets * +mipscoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR)); -static char * -mips_next_symbol_text PARAMS ((void)); - -/* Things we export to other modules */ +/* Initialize anything that needs initializing when a completely new + symbol file is specified (not just adding some symbols from another + file, e.g. a shared library). */ -/* Address bounds for the signal trampoline in inferior, if any */ -/* FIXME: Nothing really seems to use this. Why is it here? */ - -CORE_ADDR sigtramp_address, sigtramp_end; +extern CORE_ADDR sigtramp_address; static void mipscoff_new_init (ignore) @@ -380,24 +67,23 @@ mipscoff_new_init (ignore) buildsym_new_init (); } +/* Initialize to read a symbol file (nothing to do). */ + static void mipscoff_symfile_init (objfile) struct objfile *objfile; { - if (objfile->sym_private != NULL) - { - mfree (objfile->md, objfile->sym_private); - } - objfile->sym_private = (PTR) - xmmalloc (objfile->md, sizeof (struct ecoff_symfile_info)); } +/* Read a symbol file from a file. */ + static void mipscoff_symfile_read (objfile, section_offsets, mainline) struct objfile *objfile; struct section_offsets *section_offsets; int mainline; { + bfd *abfd = objfile->obfd; struct cleanup * back_to; init_minimal_symbol_collection (); @@ -406,7 +92,11 @@ mipscoff_symfile_read (objfile, section_offsets, mainline) /* Now that the executable file is positioned at symbol table, process it and define symbols accordingly. */ - read_mips_symtab (objfile, section_offsets); + if (ecoff_slurp_symbolic_info (abfd) == false) + error ("Error reading symbol table: %s", bfd_errmsg (bfd_error)); + + mdebug_build_psymtabs (objfile, &ecoff_backend (abfd)->debug_swap, + &ecoff_data (abfd)->debug_info, section_offsets); /* Install any minimal symbols that have been collected as the current minimal symbols for this objfile. */ @@ -416,3199 +106,18 @@ mipscoff_symfile_read (objfile, section_offsets, mainline) do_cleanups (back_to); } -/* Perform any local cleanups required when we are done with a particular - objfile. I.E, we are in the process of discarding all symbol information - for an objfile, freeing up all memory held for it, and unlinking the - objfile struct from the global list of known objfiles. */ +/* Perform any local cleanups required when we are done with a + particular objfile. */ static void mipscoff_symfile_finish (objfile) struct objfile *objfile; { - if (objfile->sym_private != NULL) - { - mfree (objfile->md, objfile->sym_private); - } - - cur_bfd = 0; -} - -/* Allocate zeroed memory */ - -static PTR -xzalloc (size) - unsigned int size; -{ - PTR p = xmalloc (size); - - memset (p, 0, size); - return p; -} - -/* Exported procedure: Builds a symtab from the PST partial one. - Restores the environment in effect when PST was created, delegates - most of the work to an ancillary procedure, and sorts - and reorders the symtab list at the end */ - -static void -mipscoff_psymtab_to_symtab (pst) - struct partial_symtab *pst; -{ - - if (!pst) - return; - - if (info_verbose) - { - printf_filtered ("Reading in symbols for %s...", pst->filename); - fflush (stdout); - } - - next_symbol_text_func = mips_next_symbol_text; - - psymtab_to_symtab_1 (pst, pst->filename); - - /* Match with global symbols. This only needs to be done once, - after all of the symtabs and dependencies have been read in. */ - scan_file_globals (pst->objfile); - - if (info_verbose) - printf_filtered ("done.\n"); -} - -/* Exported procedure: Is PC in the signal trampoline code */ - -int -in_sigtramp (pc, ignore) - CORE_ADDR pc; - char *ignore; /* function name */ -{ - if (sigtramp_address == 0) - fixup_sigtramp (); - return (pc >= sigtramp_address && pc < sigtramp_end); -} - -/* File-level interface functions */ - -/* Read the symtab information from file ABFD into memory. */ - -static void -read_the_mips_symtab (abfd) - bfd *abfd; -{ - if (ecoff_slurp_symbolic_info (abfd) == false) - error ("Error reading symbol table: %s", bfd_errmsg (bfd_error)); -} - -/* Find a file descriptor given its index RF relative to a file CF */ - -static FDR * -get_rfd (cf, rf) - int cf, rf; -{ - FDR *fdrs; - register FDR *f; - RFDT rfd; - - fdrs = ecoff_data (cur_bfd)->fdr; - f = fdrs + cf; - /* Object files do not have the RFD table, all refs are absolute */ - if (f->rfdBase == 0) - return fdrs + rf; - (*ecoff_backend (cur_bfd)->swap_rfd_in) - (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_rfd - + (f->rfdBase + rf) * ecoff_backend (cur_bfd)->external_rfd_size), - &rfd); - return fdrs + rfd; -} - -/* Return a safer print NAME for a file descriptor */ - -static char * -fdr_name (f) - FDR *f; -{ - if (f->rss == -1) - return "<stripped file>"; - if (f->rss == 0) - return "<NFY>"; - return ecoff_data (cur_bfd)->ss + f->issBase + f->rss; -} - - -/* Read in and parse the symtab of the file OBJFILE. Symbols from - different sections are relocated via the SECTION_OFFSETS. */ - -static void -read_mips_symtab (objfile, section_offsets) - struct objfile *objfile; - struct section_offsets *section_offsets; -{ - cur_bfd = objfile->obfd; - - read_the_mips_symtab (objfile->obfd); - - parse_partial_symbols (objfile, section_offsets); - -#if 0 - /* Check to make sure file was compiled with -g. If not, warn the - user of this limitation. */ - if (compare_glevel (max_glevel, GLEVEL_2) < 0) - { - if (max_gdbinfo == 0) - printf ("\n%s not compiled with -g, debugging support is limited.\n", - objfile->name); - printf ("You should compile with -g2 or -g3 for best debugging support.\n"); - fflush (stdout); - } -#endif } - -/* Local utilities */ - -/* Map of FDR indexes to partial symtabs */ - -struct pst_map -{ - struct partial_symtab *pst; /* the psymtab proper */ - long n_globals; /* exported globals (external symbols) */ - long globals_offset; /* cumulative */ -}; - - -/* Utility stack, used to nest procedures and blocks properly. - It is a doubly linked list, to avoid too many alloc/free. - Since we might need it quite a few times it is NOT deallocated - after use. */ - -static struct parse_stack -{ - struct parse_stack *next, *prev; - struct symtab *cur_st; /* Current symtab. */ - struct block *cur_block; /* Block in it. */ - - /* What are we parsing. stFile, or stBlock are for files and - blocks. stProc or stStaticProc means we have seen the start of a - procedure, but not the start of the block within in. When we see - the start of that block, we change it to stNil, without pushing a - new block, i.e. stNil means both a procedure and a block. */ - - int blocktype; - - int maxsyms; /* Max symbols in this block. */ - struct type *cur_type; /* Type we parse fields for. */ - int cur_field; /* Field number in cur_type. */ - CORE_ADDR procadr; /* Start addres of this procedure */ - int numargs; /* Its argument count */ -} - - *top_stack; /* Top stack ptr */ - - -/* Enter a new lexical context */ - -static void -push_parse_stack () -{ - struct parse_stack *new; - - /* Reuse frames if possible */ - if (top_stack && top_stack->prev) - new = top_stack->prev; - else - new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack)); - /* Initialize new frame with previous content */ - if (top_stack) - { - register struct parse_stack *prev = new->prev; - - *new = *top_stack; - top_stack->prev = new; - new->prev = prev; - new->next = top_stack; - } - top_stack = new; -} - -/* Exit a lexical context */ - -static void -pop_parse_stack () -{ - if (!top_stack) - return; - if (top_stack->next) - top_stack = top_stack->next; -} - - -/* Cross-references might be to things we haven't looked at - yet, e.g. type references. To avoid too many type - duplications we keep a quick fixup table, an array - of lists of references indexed by file descriptor */ - -struct mips_pending -{ - struct mips_pending *next; /* link */ - char *s; /* the unswapped symbol */ - struct type *t; /* its partial type descriptor */ -}; - - -/* Check whether we already saw symbol SH in file FH */ - -static struct mips_pending * -is_pending_symbol (fh, sh) - FDR *fh; - char *sh; -{ - int f_idx = fh - ecoff_data (cur_bfd)->fdr; - register struct mips_pending *p; - struct mips_pending **pending_list = ECOFF_PENDING_LIST (current_objfile); - - /* Linear search is ok, list is typically no more than 10 deep */ - for (p = pending_list[f_idx]; p; p = p->next) - if (p->s == sh) - break; - return p; -} - -/* Add a new symbol SH of type T */ - -static void -add_pending (fh, sh, t) - FDR *fh; - char *sh; - struct type *t; -{ - int f_idx = fh - ecoff_data (cur_bfd)->fdr; - struct mips_pending *p = is_pending_symbol (fh, sh); - - /* Make sure we do not make duplicates */ - if (!p) - { - struct mips_pending **pending_list = ECOFF_PENDING_LIST (current_objfile); - - p = ((struct mips_pending *) - obstack_alloc (¤t_objfile->psymbol_obstack, - sizeof (struct mips_pending))); - p->s = sh; - p->t = t; - p->next = pending_list[f_idx]; - pending_list[f_idx] = p; - } -} - - -/* Parsing Routines proper. */ - -/* Parse a single symbol. Mostly just make up a GDB symbol for it. - For blocks, procedures and types we open a new lexical context. - This is basically just a big switch on the symbol's type. Argument - AX is the base pointer of aux symbols for this file (fh->iauxBase). - EXT_SH points to the unswapped symbol, which is needed for struct, - union, etc., types; it is NULL for an EXTR. BIGEND says whether - aux symbols are big-endian or little-endian. Return count of - SYMR's handled (normally one). */ - -static int -parse_symbol (sh, ax, ext_sh, bigend) - SYMR *sh; - union aux_ext *ax; - char *ext_sh; - int bigend; -{ - const bfd_size_type external_sym_size - = ecoff_backend (cur_bfd)->external_sym_size; - void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) = - ecoff_backend (cur_bfd)->swap_sym_in; - char *name; - struct symbol *s; - struct block *b; - struct mips_pending *pend; - struct type *t; - struct field *f; - int count = 1; - enum address_class class; - TIR tir; - long svalue = sh->value; - int bitsize; - - if (ext_sh == (char *) NULL) - name = ecoff_data (cur_bfd)->ssext + sh->iss; - else - name = ecoff_data (cur_bfd)->ss + cur_fdr->issBase + sh->iss; - - switch (sh->st) - { - case stNil: - break; - - case stGlobal: /* external symbol, goes into global block */ - class = LOC_STATIC; - b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), - GLOBAL_BLOCK); - s = new_symbol (name); - SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; - goto data; - - case stStatic: /* static data, goes into current block. */ - class = LOC_STATIC; - b = top_stack->cur_block; - s = new_symbol (name); - if (sh->sc == scCommon) - { - /* It is a FORTRAN common block. At least for SGI Fortran the - address is not in the symbol; we need to fix it later in - scan_file_globals. */ - int bucket = hashname (SYMBOL_NAME (s)); - SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket]; - global_sym_chain[bucket] = s; - } - else - SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; - goto data; - - case stLocal: /* local variable, goes into current block */ - if (sh->sc == scRegister) - { - class = LOC_REGISTER; - svalue = ECOFF_REG_TO_REGNUM (svalue); - } - else - class = LOC_LOCAL; - b = top_stack->cur_block; - s = new_symbol (name); - SYMBOL_VALUE (s) = svalue; - - data: /* Common code for symbols describing data */ - SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; - SYMBOL_CLASS (s) = class; - add_symbol (s, b); - - /* Type could be missing in a number of cases */ - if (sh->sc == scUndefined || sh->sc == scNil || - sh->index == 0xfffff) - SYMBOL_TYPE (s) = builtin_type_int; /* undefined? */ - else - SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); - /* Value of a data symbol is its memory address */ - break; - - case stParam: /* arg to procedure, goes into current block */ - max_gdbinfo++; - top_stack->numargs++; - - /* Special GNU C++ name. */ - if (name[0] == CPLUS_MARKER && name[1] == 't' && name[2] == 0) - name = "this"; /* FIXME, not alloc'd in obstack */ - s = new_symbol (name); - - SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; - switch (sh->sc) - { - case scRegister: - /* Pass by value in register. */ - SYMBOL_CLASS(s) = LOC_REGPARM; - svalue = ECOFF_REG_TO_REGNUM (svalue); - break; - case scVar: - /* Pass by reference on stack. */ - SYMBOL_CLASS(s) = LOC_REF_ARG; - break; - case scVarRegister: - /* Pass by reference in register. */ - SYMBOL_CLASS(s) = LOC_REGPARM_ADDR; - svalue = ECOFF_REG_TO_REGNUM (svalue); - break; - default: - /* Pass by value on stack. */ - SYMBOL_CLASS(s) = LOC_ARG; - break; - } - SYMBOL_VALUE (s) = svalue; - SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name); - add_symbol (s, top_stack->cur_block); -#if 0 - /* FIXME: This has not been tested. See dbxread.c */ - /* Add the type of this parameter to the function/procedure - type of this block. */ - add_param_to_type (&top_stack->cur_block->function->type, s); -#endif - break; - - case stLabel: /* label, goes into current block */ - s = new_symbol (name); - SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */ - SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */ - SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value; - SYMBOL_TYPE (s) = builtin_type_int; - add_symbol (s, top_stack->cur_block); - break; - - case stProc: /* Procedure, usually goes into global block */ - case stStaticProc: /* Static procedure, goes into current block */ - s = new_symbol (name); - SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; - SYMBOL_CLASS (s) = LOC_BLOCK; - /* Type of the return value */ - if (sh->sc == scUndefined || sh->sc == scNil) - t = builtin_type_int; - else - t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name); - b = top_stack->cur_block; - if (sh->st == stProc) - { - struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); - /* The next test should normally be true, - but provides a hook for nested functions - (which we don't want to make global). */ - if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) - b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); - } - add_symbol (s, b); - - /* Make a type for the procedure itself */ -#if 0 - /* FIXME: This has not been tested yet! See dbxread.c */ - /* Generate a template for the type of this function. The - types of the arguments will be added as we read the symbol - table. */ - memcpy (lookup_function_type (t), SYMBOL_TYPE (s), sizeof (struct type)); -#else - SYMBOL_TYPE (s) = lookup_function_type (t); -#endif - - /* Create and enter a new lexical context */ - b = new_block (top_stack->maxsyms); - SYMBOL_BLOCK_VALUE (s) = b; - BLOCK_FUNCTION (b) = s; - BLOCK_START (b) = BLOCK_END (b) = sh->value; - BLOCK_SUPERBLOCK (b) = top_stack->cur_block; - add_block (b, top_stack->cur_st); - - /* Not if we only have partial info */ - if (sh->sc == scUndefined || sh->sc == scNil) - break; - - push_parse_stack (); - top_stack->cur_block = b; - top_stack->blocktype = sh->st; - top_stack->cur_type = SYMBOL_TYPE (s); - top_stack->cur_field = -1; - top_stack->procadr = sh->value; - top_stack->numargs = 0; - break; - - /* Beginning of code for structure, union, and enum definitions. - They all share a common set of local variables, defined here. */ - { - enum type_code type_code; - char *ext_tsym; - int nfields; - long max_value; - struct field *f; - - case stStruct: /* Start a block defining a struct type */ - type_code = TYPE_CODE_STRUCT; - goto structured_common; - - case stUnion: /* Start a block defining a union type */ - type_code = TYPE_CODE_UNION; - goto structured_common; - - case stEnum: /* Start a block defining an enum type */ - type_code = TYPE_CODE_ENUM; - goto structured_common; - - case stBlock: /* Either a lexical block, or some type */ - if (sh->sc != scInfo && sh->sc != scCommon) - goto case_stBlock_code; /* Lexical block */ - - type_code = TYPE_CODE_UNDEF; /* We have a type. */ - - /* Common code for handling struct, union, enum, and/or as-yet- - unknown-type blocks of info about structured data. `type_code' - has been set to the proper TYPE_CODE, if we know it. */ - structured_common: - push_parse_stack (); - top_stack->blocktype = stBlock; - - /* First count the number of fields and the highest value. */ - nfields = 0; - max_value = 0; - for (ext_tsym = ext_sh + external_sym_size; - ; - ext_tsym += external_sym_size) - { - SYMR tsym; - - (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); - - switch (tsym.st) - { - case stEnd: - goto end_of_fields; - - case stMember: - if (nfields == 0 && type_code == TYPE_CODE_UNDEF) - /* If the type of the member is Nil (or Void), - without qualifiers, assume the tag is an - enumeration. */ - if (tsym.index == indexNil) - type_code = TYPE_CODE_ENUM; - else - { - ecoff_swap_tir_in (bigend, - &ax[tsym.index].a_ti, - &tir); - if ((tir.bt == btNil || tir.bt == btVoid) - && tir.tq0 == tqNil) - type_code = TYPE_CODE_ENUM; - } - nfields++; - if (tsym.value > max_value) - max_value = tsym.value; - break; - - case stBlock: - case stUnion: - case stEnum: - case stStruct: - { -#if 0 - /* This is a no-op; is it trying to tell us something - we should be checking? */ - if (tsym.sc == scVariant); /*UNIMPLEMENTED*/ -#endif - if (tsym.index != 0) - { - /* This is something like a struct within a - struct. Skip over the fields of the inner - struct. The -1 is because the for loop will - increment ext_tsym. */ - ext_tsym = ((char *) ecoff_data (cur_bfd)->external_sym - + ((cur_fdr->isymBase + tsym.index - 1) - * external_sym_size)); - } - } - break; - - case stTypedef: - /* mips cc puts out a typedef for struct x if it is not yet - defined when it encounters - struct y { struct x *xp; }; - Just ignore it. */ - break; - - default: - complain (&block_member_complaint, tsym.st); - } - } - end_of_fields:; - - /* In an stBlock, there is no way to distinguish structs, - unions, and enums at this point. This is a bug in the - original design (that has been fixed with the recent - addition of the stStruct, stUnion, and stEnum symbol - types.) The way you can tell is if/when you see a variable - or field of that type. In that case the variable's type - (in the AUX table) says if the type is struct, union, or - enum, and points back to the stBlock here. So you can - patch the tag kind up later - but only if there actually is - a variable or field of that type. - - So until we know for sure, we will guess at this point. - The heuristic is: - If the first member has index==indexNil or a void type, - assume we have an enumeration. - Otherwise, if there is more than one member, and all - the members have offset 0, assume we have a union. - Otherwise, assume we have a struct. - - The heuristic could guess wrong in the case of of an - enumeration with no members or a union with one (or zero) - members, or when all except the last field of a struct have - width zero. These are uncommon and/or illegal situations, - and in any case guessing wrong probably doesn't matter - much. - - But if we later do find out we were wrong, we fixup the tag - kind. Members of an enumeration must be handled - differently from struct/union fields, and that is harder to - patch up, but luckily we shouldn't need to. (If there are - any enumeration members, we can tell for sure it's an enum - here.) */ - - if (type_code == TYPE_CODE_UNDEF) - if (nfields > 1 && max_value == 0) - type_code = TYPE_CODE_UNION; - else - type_code = TYPE_CODE_STRUCT; - - /* Create a new type or use the pending type. */ - pend = is_pending_symbol (cur_fdr, ext_sh); - if (pend == (struct mips_pending *) NULL) - { - t = new_type (NULL); - add_pending (cur_fdr, ext_sh, t); - } - else - t = pend->t; - - /* Alpha cc unnamed structs do not get a tag name. */ - if (sh->iss == 0) - TYPE_TAG_NAME (t) = NULL; - else - TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack, - "", "", name); - - TYPE_CODE (t) = type_code; - TYPE_LENGTH (t) = sh->value; - TYPE_NFIELDS (t) = nfields; - TYPE_FIELDS (t) = f = ((struct field *) - TYPE_ALLOC (t, - nfields * sizeof (struct field))); - - if (type_code == TYPE_CODE_ENUM) - { - /* This is a non-empty enum. */ - for (ext_tsym = ext_sh + external_sym_size; - ; - ext_tsym += external_sym_size) - { - SYMR tsym; - struct symbol *enum_sym; - - (*swap_sym_in) (cur_bfd, ext_tsym, &tsym); - - if (tsym.st != stMember) - break; - - f->bitpos = tsym.value; - f->type = t; - f->name = (ecoff_data (cur_bfd)->ss - + cur_fdr->issBase - + tsym.iss); - f->bitsize = 0; - - enum_sym = ((struct symbol *) - obstack_alloc (¤t_objfile->symbol_obstack, - sizeof (struct symbol))); - memset ((PTR) enum_sym, 0, sizeof (struct symbol)); - SYMBOL_NAME (enum_sym) = f->name; - SYMBOL_CLASS (enum_sym) = LOC_CONST; - SYMBOL_TYPE (enum_sym) = t; - SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE; - SYMBOL_VALUE (enum_sym) = tsym.value; - add_symbol (enum_sym, top_stack->cur_block); - - /* Skip the stMembers that we've handled. */ - count++; - f++; - } - } - /* make this the current type */ - top_stack->cur_type = t; - top_stack->cur_field = 0; - - /* Do not create a symbol for alpha cc unnamed structs. */ - if (sh->iss == 0) - break; - s = new_symbol (name); - SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE; - SYMBOL_CLASS (s) = LOC_TYPEDEF; - SYMBOL_VALUE (s) = 0; - SYMBOL_TYPE (s) = t; - - /* gcc puts out an empty struct for an opaque struct definitions. */ - if (TYPE_NFIELDS (t) == 0) - { - TYPE_FLAGS (t) |= TYPE_FLAG_STUB; - SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; - } - add_symbol (s, top_stack->cur_block); - break; - - /* End of local variables shared by struct, union, enum, and - block (as yet unknown struct/union/enum) processing. */ - } - - case_stBlock_code: - /* beginnning of (code) block. Value of symbol - is the displacement from procedure start */ - push_parse_stack (); - - /* Do not start a new block if this is the outermost block of a - procedure. This allows the LOC_BLOCK symbol to point to the - block with the local variables, so funcname::var works. */ - if (top_stack->blocktype == stProc - || top_stack->blocktype == stStaticProc) - { - top_stack->blocktype = stNil; - break; - } - - top_stack->blocktype = stBlock; - b = new_block (top_stack->maxsyms); - BLOCK_START (b) = sh->value + top_stack->procadr; - BLOCK_SUPERBLOCK (b) = top_stack->cur_block; - top_stack->cur_block = b; - add_block (b, top_stack->cur_st); - break; - - case stEnd: /* end (of anything) */ - if (sh->sc == scInfo || sh->sc == scCommon) - { - /* Finished with type */ - top_stack->cur_type = 0; - } - else if (sh->sc == scText && - (top_stack->blocktype == stProc || - top_stack->blocktype == stStaticProc)) - { - /* Finished with procedure */ - struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st); - struct mips_extra_func_info *e; - struct block *b; - int i; - - BLOCK_END (top_stack->cur_block) += sh->value; /* size */ - - /* Make up special symbol to contain procedure specific info */ - s = new_symbol (MIPS_EFI_SYMBOL_NAME); - SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; - SYMBOL_CLASS (s) = LOC_CONST; - SYMBOL_TYPE (s) = builtin_type_void; - e = ((struct mips_extra_func_info *) - obstack_alloc (¤t_objfile->symbol_obstack, - sizeof (struct mips_extra_func_info))); - SYMBOL_VALUE (s) = (long) e; - e->numargs = top_stack->numargs; - add_symbol (s, top_stack->cur_block); - - /* Reallocate symbols, saving memory */ - b = shrink_block (top_stack->cur_block, top_stack->cur_st); - - /* f77 emits proc-level with address bounds==[0,0], - So look for such child blocks, and patch them. */ - for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) - { - struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i); - if (BLOCK_SUPERBLOCK (b_bad) == b - && BLOCK_START (b_bad) == top_stack->procadr - && BLOCK_END (b_bad) == top_stack->procadr) - { - BLOCK_START (b_bad) = BLOCK_START (b); - BLOCK_END (b_bad) = BLOCK_END (b); - } - } - } - else if (sh->sc == scText && top_stack->blocktype == stBlock) - { - /* End of (code) block. The value of the symbol is the - displacement from the procedure`s start address of the - end of this block. */ - BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr; - shrink_block (top_stack->cur_block, top_stack->cur_st); - } - else if (sh->sc == scText && top_stack->blocktype == stNil) - { - /* End of outermost block. Pop parse stack and ignore. The - following stEnd of stProc will take care of the block. */ - ; - } - else if (sh->sc == scText && top_stack->blocktype == stFile) - { - /* End of file. Pop parse stack and ignore. Higher - level code deals with this. */ - ; - } - else - complain (&stEnd_complaint, sh->sc); - - pop_parse_stack (); /* restore previous lexical context */ - break; - - case stMember: /* member of struct or union */ - f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++]; - f->name = name; - f->bitpos = sh->value; - bitsize = 0; - f->type = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name); - f->bitsize = bitsize; - break; - - case stTypedef: /* type definition */ - /* Typedefs for forward declarations and opaque structs from alpha cc - are handled by cross_ref, skip them. */ - if (sh->iss == 0) - break; - - /* Parse the type or use the pending type. */ - pend = is_pending_symbol (cur_fdr, ext_sh); - if (pend == (struct mips_pending *) NULL) - { - t = parse_type (cur_fd, ax, sh->index, (int *)NULL, bigend, name); - add_pending (cur_fdr, ext_sh, t); - } - else - t = pend->t; - - /* mips cc puts out a typedef with the name of the struct for forward - declarations. These should not go into the symbol table and - TYPE_NAME should not be set for them. - They can't be distinguished from an intentional typedef to - the same name however: - x.h: - struct x { int ix; int jx; }; - struct xx; - x.c: - typedef struct x x; - struct xx {int ixx; int jxx; }; - generates a cross referencing stTypedef for x and xx. - The user visible effect of this is that the type of a pointer - to struct foo sometimes is given as `foo *' instead of `struct foo *'. - The problem is fixed with alpha cc. */ - - s = new_symbol (name); - SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; - SYMBOL_CLASS (s) = LOC_TYPEDEF; - SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block; - SYMBOL_TYPE (s) = t; - add_symbol (s, top_stack->cur_block); - - /* Incomplete definitions of structs should not get a name. */ - if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL - && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0 - || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT - && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION))) - { - if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR - || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC) - { - /* If we are giving a name to a type such as "pointer to - foo" or "function returning foo", we better not set - the TYPE_NAME. If the program contains "typedef char - *caddr_t;", we don't want all variables of type char - * to print as caddr_t. This is not just a - consequence of GDB's type management; CC and GCC (at - least through version 2.4) both output variables of - either type char * or caddr_t with the type - refering to the stTypedef symbol for caddr_t. If a future - compiler cleans this up it GDB is not ready for it - yet, but if it becomes ready we somehow need to - disable this check (without breaking the PCC/GCC2.4 - case). - - Sigh. - - Fortunately, this check seems not to be necessary - for anything except pointers or functions. */ - } - else - TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s); - } - break; - - case stFile: /* file name */ - push_parse_stack (); - top_stack->blocktype = sh->st; - break; - - /* I`ve never seen these for C */ - case stRegReloc: - break; /* register relocation */ - case stForward: - break; /* forwarding address */ - case stConstant: - break; /* constant */ - default: - complain (&unknown_mips_symtype_complaint, sh->st); - break; - } - - return count; -} - -/* Parse the type information provided in the raw AX entries for - the symbol SH. Return the bitfield size in BS, in case. - We must byte-swap the AX entries before we use them; BIGEND says whether - they are big-endian or little-endian (from fh->fBigendian). */ - -static struct type * -parse_type (fd, ax, aux_index, bs, bigend, sym_name) - int fd; - union aux_ext *ax; - unsigned int aux_index; - int *bs; - int bigend; - char *sym_name; -{ - /* Null entries in this map are treated specially */ - static struct type **map_bt[] = - { - &builtin_type_void, /* btNil */ - 0, /* btAdr */ - &builtin_type_char, /* btChar */ - &builtin_type_unsigned_char,/* btUChar */ - &builtin_type_short, /* btShort */ - &builtin_type_unsigned_short, /* btUShort */ - &builtin_type_int, /* btInt */ - &builtin_type_unsigned_int, /* btUInt */ - &builtin_type_long, /* btLong */ - &builtin_type_unsigned_long,/* btULong */ - &builtin_type_float, /* btFloat */ - &builtin_type_double, /* btDouble */ - 0, /* btStruct */ - 0, /* btUnion */ - 0, /* btEnum */ - 0, /* btTypedef */ - 0, /* btRange */ - 0, /* btSet */ - &builtin_type_complex, /* btComplex */ - &builtin_type_double_complex, /* btDComplex */ - 0, /* btIndirect */ - &builtin_type_fixed_dec, /* btFixedDec */ - &builtin_type_float_dec, /* btFloatDec */ - &builtin_type_string, /* btString */ - 0, /* btBit */ - 0, /* btPicture */ - &builtin_type_void, /* btVoid */ - 0, /* DEC C++: Pointer to member */ - 0, /* DEC C++: Virtual function table */ - 0, /* DEC C++: Class (Record) */ - &builtin_type_long, /* btLong64 */ - &builtin_type_unsigned_long, /* btULong64 */ - &builtin_type_long_long, /* btLongLong64 */ - &builtin_type_unsigned_long_long, /* btULongLong64 */ - &builtin_type_unsigned_long, /* btAdr64 */ - &builtin_type_long, /* btInt64 */ - &builtin_type_unsigned_long, /* btUInt64 */ - }; - - TIR t[1]; - struct type *tp = 0; - enum type_code type_code = TYPE_CODE_UNDEF; - - /* Handle corrupt aux indices. */ - if (aux_index >= (ecoff_data (cur_bfd)->fdr + fd)->caux) - { - complain (&index_complaint, sym_name); - return builtin_type_int; - } - ax += aux_index; - - /* Use aux as a type information record, map its basic type. */ - ecoff_swap_tir_in (bigend, &ax->a_ti, t); - if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt))) - { - complain (&basic_type_complaint, t->bt, sym_name); - return builtin_type_int; - } - if (map_bt[t->bt]) - { - tp = *map_bt[t->bt]; - } - else - { - tp = NULL; - /* Cannot use builtin types -- build our own */ - switch (t->bt) - { - case btAdr: - tp = lookup_pointer_type (builtin_type_void); - break; - case btStruct: - type_code = TYPE_CODE_STRUCT; - break; - case btUnion: - type_code = TYPE_CODE_UNION; - break; - case btEnum: - type_code = TYPE_CODE_ENUM; - break; - case btRange: - type_code = TYPE_CODE_RANGE; - break; - case btSet: - type_code = TYPE_CODE_SET; - break; - case btTypedef: - /* alpha cc uses this for typedefs. The true type will be - obtained by crossreferencing below. */ - type_code = TYPE_CODE_ERROR; - break; - default: - complain (&basic_type_complaint, t->bt, sym_name); - return builtin_type_int; - } - } - - /* Move on to next aux */ - ax++; - - if (t->fBitfield) - { - /* Inhibit core dumps with some cfront generated objects that - corrupt the TIR. */ - if (bs == (int *)NULL) - { - complain (&bad_fbitfield_complaint, sym_name); - return builtin_type_int; - } - *bs = AUX_GET_WIDTH (bigend, ax); - ax++; - } - - /* All these types really point to some (common) MIPS type - definition, and only the type-qualifiers fully identify - them. We'll make the same effort at sharing. */ - if (t->bt == btStruct || - t->bt == btUnion || - t->bt == btEnum || - - /* btSet (I think) implies that the name is a tag name, not a typedef - name. This apparently is a MIPS extension for C sets. */ - t->bt == btSet) - { - char *name; - - /* Try to cross reference this type, build new type on failure. */ - ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); - if (tp == (struct type *) NULL) - tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); - - /* Make sure that TYPE_CODE(tp) has an expected type code. - Any type may be returned from cross_ref if file indirect entries - are corrupted. */ - if (TYPE_CODE (tp) != TYPE_CODE_STRUCT - && TYPE_CODE (tp) != TYPE_CODE_UNION - && TYPE_CODE (tp) != TYPE_CODE_ENUM) - { - complain (&unexpected_type_code_complaint, sym_name); - } - else - { - - /* Usually, TYPE_CODE(tp) is already type_code. The main - exception is if we guessed wrong re struct/union/enum. - But for struct vs. union a wrong guess is harmless, so - don't complain(). */ - if ((TYPE_CODE (tp) == TYPE_CODE_ENUM - && type_code != TYPE_CODE_ENUM) - || (TYPE_CODE (tp) != TYPE_CODE_ENUM - && type_code == TYPE_CODE_ENUM)) - { - complain (&bad_tag_guess_complaint, sym_name); - } - - if (TYPE_CODE (tp) != type_code) - { - TYPE_CODE (tp) = type_code; - } - - /* Do not set the tag name if it is a compiler generated tag name - (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */ - if (name[0] == '.' || name[0] == '\0') - TYPE_TAG_NAME (tp) = NULL; - else if (TYPE_TAG_NAME (tp) == NULL - || !STREQ (TYPE_TAG_NAME (tp), name)) - TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name), - ¤t_objfile->type_obstack); - } - } - - /* All these types really point to some (common) MIPS type - definition, and only the type-qualifiers fully identify - them. We'll make the same effort at sharing. - FIXME: btIndirect cannot happen here as it is handled by the - switch t->bt above. And we are not doing any guessing on range types. */ - if (t->bt == btIndirect || - t->bt == btRange) - { - char *name; - - /* Try to cross reference this type, build new type on failure. */ - ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); - if (tp == (struct type *) NULL) - tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); - - /* Make sure that TYPE_CODE(tp) has an expected type code. - Any type may be returned from cross_ref if file indirect entries - are corrupted. */ - if (TYPE_CODE (tp) != TYPE_CODE_RANGE) - { - complain (&unexpected_type_code_complaint, sym_name); - } - else - { - /* Usually, TYPE_CODE(tp) is already type_code. The main - exception is if we guessed wrong re struct/union/enum. */ - if (TYPE_CODE (tp) != type_code) - { - complain (&bad_tag_guess_complaint, sym_name); - TYPE_CODE (tp) = type_code; - } - if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name)) - TYPE_NAME (tp) = obsavestring (name, strlen (name), - ¤t_objfile->type_obstack); - } - } - if (t->bt == btTypedef) - { - char *name; - - /* Try to cross reference this type, it should succeed. */ - ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name); - if (tp == (struct type *) NULL) - { - complain (&unable_to_cross_ref_complaint, sym_name); - tp = builtin_type_int; - } - } - - /* Deal with range types */ - if (t->bt == btRange) - { - TYPE_NFIELDS (tp) = 2; - TYPE_FIELDS (tp) = ((struct field *) - TYPE_ALLOC (tp, 2 * sizeof (struct field))); - TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"), - ¤t_objfile->type_obstack); - TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax); - ax++; - TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"), - ¤t_objfile->type_obstack); - TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax); - ax++; - } - - /* Parse all the type qualifiers now. If there are more - than 6 the game will continue in the next aux */ - - while (1) - { -#define PARSE_TQ(tq) \ - if (t->tq != tqNil) \ - ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \ - else \ - break; - - PARSE_TQ (tq0); - PARSE_TQ (tq1); - PARSE_TQ (tq2); - PARSE_TQ (tq3); - PARSE_TQ (tq4); - PARSE_TQ (tq5); -#undef PARSE_TQ - - /* mips cc 2.x and gcc never put out continued aux entries. */ - if (!t->continued) - break; - - ecoff_swap_tir_in (bigend, &ax->a_ti, t); - ax++; - } - - /* Complain for illegal continuations due to corrupt aux entries. */ - if (t->continued) - complain (&bad_continued_complaint, sym_name); - - return tp; -} - -/* Make up a complex type from a basic one. Type is passed by - reference in TPP and side-effected as necessary. The type - qualifier TQ says how to handle the aux symbols at AX for - the symbol SX we are currently analyzing. BIGEND says whether - aux symbols are big-endian or little-endian. - Returns the number of aux symbols we parsed. */ - -static int -upgrade_type (fd, tpp, tq, ax, bigend, sym_name) - int fd; - struct type **tpp; - int tq; - union aux_ext *ax; - int bigend; - char *sym_name; -{ - int off; - struct type *t; - - /* Used in array processing */ - int rf, id; - FDR *fh; - struct type *range; - struct type *indx; - int lower, upper; - RNDXR rndx; - - switch (tq) - { - case tqPtr: - t = lookup_pointer_type (*tpp); - *tpp = t; - return 0; - - case tqProc: - t = lookup_function_type (*tpp); - *tpp = t; - return 0; - - case tqArray: - off = 0; - - /* Determine and record the domain type (type of index) */ - ecoff_swap_rndx_in (bigend, &ax->a_rndx, &rndx); - id = rndx.index; - rf = rndx.rfd; - if (rf == 0xfff) - { - ax++; - rf = AUX_GET_ISYM (bigend, ax); - off++; - } - fh = get_rfd (fd, rf); - - indx = parse_type (fd, - ecoff_data (cur_bfd)->external_aux + fh->iauxBase, - id, (int *) NULL, bigend, sym_name); - - /* The bounds type should be an integer type, but might be anything - else due to corrupt aux entries. */ - if (TYPE_CODE (indx) != TYPE_CODE_INT) - { - complain (&array_index_type_complaint, sym_name); - indx = builtin_type_int; - } - - /* Get the bounds, and create the array type. */ - ax++; - lower = AUX_GET_DNLOW (bigend, ax); - ax++; - upper = AUX_GET_DNHIGH (bigend, ax); - ax++; - rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ - - range = create_range_type ((struct type *) NULL, indx, - lower, upper); - - t = create_array_type ((struct type *) NULL, *tpp, range); - - /* We used to fill in the supplied array element bitsize - here if the TYPE_LENGTH of the target type was zero. - This happens for a `pointer to an array of anonymous structs', - but in this case the array element bitsize is also zero, - so nothing is gained. - And we used to check the TYPE_LENGTH of the target type against - the supplied array element bitsize. - gcc causes a mismatch for `pointer to array of object', - since the sdb directives it uses do not have a way of - specifying the bitsize, but it does no harm (the - TYPE_LENGTH should be correct) and we should be able to - ignore the erroneous bitsize from the auxiliary entry safely. - dbx seems to ignore it too. */ - - *tpp = t; - return 4 + off; - - case tqVol: - /* Volatile -- currently ignored */ - return 0; - - case tqConst: - /* Const -- currently ignored */ - return 0; - - default: - complain (&unknown_type_qual_complaint, tq); - return 0; - } -} - - -/* Parse a procedure descriptor record PR. Note that the procedure is - parsed _after_ the local symbols, now we just insert the extra - information we need into a MIPS_EFI_SYMBOL_NAME symbol that has - already been placed in the procedure's main block. Note also that - images that have been partially stripped (ld -x) have been deprived - of local symbols, and we have to cope with them here. FIRST_OFF is - the offset of the first procedure for this FDR; we adjust the - address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab - to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol - in question, or NULL to use top_stack->cur_block. */ - -static void parse_procedure PARAMS ((PDR *, struct symtab *, unsigned long)); - -static void -parse_procedure (pr, search_symtab, first_off) - PDR *pr; - struct symtab *search_symtab; - unsigned long first_off; -{ - struct symbol *s, *i; - struct block *b; - struct mips_extra_func_info *e; - char *sh_name; - - /* Simple rule to find files linked "-x" */ - if (cur_fdr->rss == -1) - { - if (pr->isym == -1) - { - /* Static procedure at address pr->adr. Sigh. */ - complain (&pdr_static_symbol_complaint, (unsigned long) pr->adr); - return; - } - else - { - /* external */ - EXTR she; - - (*ecoff_backend (cur_bfd)->swap_ext_in) - (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_ext - + pr->isym * ecoff_backend (cur_bfd)->external_ext_size), - &she); - sh_name = ecoff_data (cur_bfd)->ssext + she.asym.iss; - } - } - else - { - /* Full symbols */ - SYMR sh; - - (*ecoff_backend (cur_bfd)->swap_sym_in) - (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_sym - + ((cur_fdr->isymBase + pr->isym) - * ecoff_backend (cur_bfd)->external_sym_size)), - &sh); - sh_name = ecoff_data (cur_bfd)->ss + cur_fdr->issBase + sh.iss; - } - - if (search_symtab != NULL) - { -#if 0 - /* This loses both in the case mentioned (want a static, find a global), - but also if we are looking up a non-mangled name which happens to - match the name of a mangled function. */ - /* We have to save the cur_fdr across the call to lookup_symbol. - If the pdr is for a static function and if a global function with - the same name exists, lookup_symbol will eventually read in the symtab - for the global function and clobber cur_fdr. */ - FDR *save_cur_fdr = cur_fdr; - s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL); - cur_fdr = save_cur_fdr; -#else - s = mylookup_symbol - (sh_name, - BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK), - VAR_NAMESPACE, - LOC_BLOCK); -#endif - } - else - s = mylookup_symbol (sh_name, top_stack->cur_block, - VAR_NAMESPACE, LOC_BLOCK); - - if (s != 0) - { - b = SYMBOL_BLOCK_VALUE (s); - } - else - { - complain (&pdr_for_nonsymbol_complaint, sh_name); -#if 1 - return; -#else -/* FIXME -- delete. We can't do symbol allocation now; it's all done. */ - s = new_symbol (sh_name); - SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; - SYMBOL_CLASS (s) = LOC_BLOCK; - /* Donno its type, hope int is ok */ - SYMBOL_TYPE (s) = lookup_function_type (builtin_type_int); - add_symbol (s, top_stack->cur_block); - /* Wont have symbols for this one */ - b = new_block (2); - SYMBOL_BLOCK_VALUE (s) = b; - BLOCK_FUNCTION (b) = s; - BLOCK_START (b) = pr->adr; - /* BOUND used to be the end of procedure's text, but the - argument is no longer passed in. */ - BLOCK_END (b) = bound; - BLOCK_SUPERBLOCK (b) = top_stack->cur_block; - add_block (b, top_stack->cur_st); -#endif - } - - i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST); - - if (i) - { - e = (struct mips_extra_func_info *) SYMBOL_VALUE (i); - e->pdr = *pr; - e->pdr.isym = (long) s; - e->pdr.adr += cur_fdr->adr - first_off; - - /* Correct incorrect setjmp procedure descriptor from the library - to make backtrace through setjmp work. */ - if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp")) - { - complain (&bad_setjmp_pdr_complaint, 0); - e->pdr.pcreg = RA_REGNUM; - e->pdr.regmask = 0x80000000; - e->pdr.regoffset = -4; - } - - /* Fake PC_REGNUM for alpha __sigtramp so that read_next_frame_reg - will use the saved user pc from the sigcontext. */ - if (STREQ (sh_name, "__sigtramp")) - e->pdr.pcreg = PC_REGNUM; - } -} - -/* Parse the external symbol ES. Just call parse_symbol() after - making sure we know where the aux are for it. For procedures, - parsing of the PDRs has already provided all the needed - information, we only parse them if SKIP_PROCEDURES is false, - and only if this causes no symbol duplication. - BIGEND says whether aux entries are big-endian or little-endian. - - This routine clobbers top_stack->cur_block and ->cur_st. */ - -static void -parse_external (es, skip_procedures, bigend) - EXTR *es; - int skip_procedures; - int bigend; -{ - union aux_ext *ax; - - if (es->ifd != ifdNil) - { - cur_fd = es->ifd; - cur_fdr = ecoff_data (cur_bfd)->fdr + cur_fd; - ax = ecoff_data (cur_bfd)->external_aux + cur_fdr->iauxBase; - } - else - { - cur_fdr = ecoff_data (cur_bfd)->fdr; - ax = 0; - } - - /* Reading .o files */ - if (es->asym.sc == scUndefined || es->asym.sc == scNil) - { - char *what; - switch (es->asym.st) - { - case stNil: - /* These are generated for static symbols in .o files, - ignore them. */ - return; - case stStaticProc: - case stProc: - what = "procedure"; - n_undef_procs++; - break; - case stGlobal: - what = "variable"; - n_undef_vars++; - break; - case stLabel: - what = "label"; - n_undef_labels++; - break; - default: - what = "symbol"; - break; - } - n_undef_symbols++; - /* FIXME: Turn this into a complaint? */ - if (info_verbose) - printf_filtered ("Warning: %s `%s' is undefined (in %s)\n", - what, - ecoff_data (cur_bfd)->ssext + es->asym.iss, - fdr_name (cur_fdr)); - return; - } - - switch (es->asym.st) - { - case stProc: - /* If we have full symbols we do not need more */ - if (skip_procedures) - return; - if (mylookup_symbol (ecoff_data (cur_bfd)->ssext + es->asym.iss, - top_stack->cur_block, - VAR_NAMESPACE, LOC_BLOCK)) - break; - /* fall through */ - case stGlobal: - case stLabel: - /* Note that the case of a symbol with indexNil must be handled - anyways by parse_symbol(). */ - parse_symbol (&es->asym, ax, (char *) NULL, bigend); - break; - default: - break; - } -} - -/* Parse the line number info for file descriptor FH into - GDB's linetable LT. MIPS' encoding requires a little bit - of magic to get things out. Note also that MIPS' line - numbers can go back and forth, apparently we can live - with that and do not need to reorder our linetables */ - -static void -parse_lines (fh, pr, lt, maxlines) - FDR *fh; - PDR *pr; - struct linetable *lt; - int maxlines; -{ - unsigned char *base; - int j, k; - int delta, count, lineno = 0; - unsigned long first_off = pr->adr; - - if (fh->cbLine == 0) - return; - - base = ecoff_data (cur_bfd)->line + fh->cbLineOffset; - - /* Scan by procedure descriptors */ - k = 0; - for (j = 0; j < fh->cpd; j++, pr++) - { - long l; - unsigned long adr; - unsigned char *halt; - - /* No code for this one */ - if (pr->iline == ilineNil || - pr->lnLow == -1 || pr->lnHigh == -1) - continue; - - /* Determine start and end address of compressed line bytes for - this procedure. */ - base = ecoff_data (cur_bfd)->line + fh->cbLineOffset; - if (j != (fh->cpd - 1)) - halt = base + pr[1].cbLineOffset; - else - halt = base + fh->cbLine; - base += pr->cbLineOffset; - - adr = fh->adr + pr->adr - first_off; - l = adr >> 2; /* in words */ - for (lineno = pr->lnLow; base < halt; ) - { - count = *base & 0x0f; - delta = *base++ >> 4; - if (delta >= 8) - delta -= 16; - if (delta == -8) - { - delta = (base[0] << 8) | base[1]; - if (delta >= 0x8000) - delta -= 0x10000; - base += 2; - } - lineno += delta; /* first delta is 0 */ - - /* Complain if the line table overflows. Could happen - with corrupt binaries. */ - if (lt->nitems >= maxlines) - { - complain (&bad_linetable_guess_complaint, fdr_name (fh)); - break; - } - k = add_line (lt, lineno, l, k); - l += count + 1; - } - } -} - -/* Master parsing procedure for first-pass reading of file symbols - into a partial_symtab. */ - -static void -parse_partial_symbols (objfile, section_offsets) - struct objfile *objfile; - struct section_offsets *section_offsets; -{ - const struct ecoff_backend_data * const backend = ecoff_backend (cur_bfd); - const bfd_size_type external_sym_size = backend->external_sym_size; - const bfd_size_type external_rfd_size = backend->external_rfd_size; - const bfd_size_type external_ext_size = backend->external_ext_size; - void (* const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *)) - = backend->swap_ext_in; - void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) - = backend->swap_sym_in; - void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *)) - = backend->swap_rfd_in; - int f_idx, s_idx; - HDRR *hdr = &ecoff_data (cur_bfd)->symbolic_header; - /* Running pointers */ - FDR *fh; - char *ext_out; - char *ext_out_end; - EXTR *ext_block; - register EXTR *ext_in; - EXTR *ext_in_end; - SYMR sh; - struct partial_symtab *pst; - - int past_first_source_file = 0; - - /* List of current psymtab's include files */ - char **psymtab_include_list; - int includes_allocated; - int includes_used; - EXTR *extern_tab; - struct pst_map *fdr_to_pst; - /* Index within current psymtab dependency list */ - struct partial_symtab **dependency_list; - int dependencies_used, dependencies_allocated; - struct cleanup *old_chain; - char *name; - enum language prev_language; - - extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack, - sizeof (EXTR) * hdr->iextMax); - - includes_allocated = 30; - includes_used = 0; - psymtab_include_list = (char **) alloca (includes_allocated * - sizeof (char *)); - next_symbol_text_func = mips_next_symbol_text; - - dependencies_allocated = 30; - dependencies_used = 0; - dependency_list = - (struct partial_symtab **) alloca (dependencies_allocated * - sizeof (struct partial_symtab *)); - - last_source_file = NULL; - - /* - * Big plan: - * - * Only parse the Local and External symbols, and the Relative FDR. - * Fixup enough of the loader symtab to be able to use it. - * Allocate space only for the file's portions we need to - * look at. (XXX) - */ - - max_gdbinfo = 0; - max_glevel = MIN_GLEVEL; - - /* Allocate the map FDR -> PST. - Minor hack: -O3 images might claim some global data belongs - to FDR -1. We`ll go along with that */ - fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst); - old_chain = make_cleanup (free, fdr_to_pst); - fdr_to_pst++; - { - struct partial_symtab *pst = new_psymtab ("", objfile); - fdr_to_pst[-1].pst = pst; - FDR_IDX (pst) = -1; - } - - /* Allocate the global pending list. */ - ECOFF_PENDING_LIST (objfile) = - ((struct mips_pending **) - obstack_alloc (&objfile->psymbol_obstack, - hdr->ifdMax * sizeof (struct mips_pending *))); - memset ((PTR) ECOFF_PENDING_LIST (objfile), 0, - hdr->ifdMax * sizeof (struct mips_pending *)); - - /* Pass 0 over external syms: swap them in. */ - ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR)); - make_cleanup (free, ext_block); - - ext_out = (char *) ecoff_data (cur_bfd)->external_ext; - ext_out_end = ext_out + hdr->iextMax * external_ext_size; - ext_in = ext_block; - for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++) - (*swap_ext_in) (cur_bfd, ext_out, ext_in); - - /* Pass 1 over external syms: Presize and partition the list */ - ext_in = ext_block; - ext_in_end = ext_in + hdr->iextMax; - for (; ext_in < ext_in_end; ext_in++) - fdr_to_pst[ext_in->ifd].n_globals++; - - /* Pass 1.5 over files: partition out global symbol space */ - s_idx = 0; - for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) - { - fdr_to_pst[f_idx].globals_offset = s_idx; - s_idx += fdr_to_pst[f_idx].n_globals; - fdr_to_pst[f_idx].n_globals = 0; - } - - /* Pass 2 over external syms: fill in external symbols */ - ext_in = ext_block; - ext_in_end = ext_in + hdr->iextMax; - for (; ext_in < ext_in_end; ext_in++) - { - enum minimal_symbol_type ms_type = mst_text; - - extern_tab[fdr_to_pst[ext_in->ifd].globals_offset - + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in; - - if (ext_in->asym.sc == scUndefined || ext_in->asym.sc == scNil) - continue; - - name = ecoff_data (cur_bfd)->ssext + ext_in->asym.iss; - switch (ext_in->asym.st) - { - case stProc: - break; - case stStaticProc: - ms_type = mst_file_text; - break; - case stGlobal: - if (ext_in->asym.sc == scData - || ext_in->asym.sc == scSData - || ext_in->asym.sc == scRData) - ms_type = mst_data; - else - ms_type = mst_bss; - break; - case stLabel: - if (ext_in->asym.sc == scAbs) - ms_type = mst_abs; - else if (ext_in->asym.sc == scText) - ms_type = mst_text; - else if (ext_in->asym.sc == scData - || ext_in->asym.sc == scSData - || ext_in->asym.sc == scRData) - ms_type = mst_data; - else - ms_type = mst_bss; - break; - case stLocal: - /* The alpha has the section start addresses in stLocal symbols - whose name starts with a `.'. Skip those but complain for all - other stLocal symbols. */ - if (name[0] == '.') - continue; - /* Fall through. */ - default: - ms_type = mst_unknown; - complain (&unknown_ext_complaint, name); - } - prim_record_minimal_symbol (name, ext_in->asym.value, ms_type); - } - - /* Pass 3 over files, over local syms: fill in static symbols */ - for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) - { - struct partial_symtab *save_pst; - EXTR *ext_ptr; - - cur_fdr = fh = ecoff_data (cur_bfd)->fdr + f_idx; - - if (fh->csym == 0) - { - fdr_to_pst[f_idx].pst = NULL; - continue; - } - pst = start_psymtab_common (objfile, section_offsets, - fdr_name (fh), - fh->cpd ? fh->adr : 0, - objfile->global_psymbols.next, - objfile->static_psymbols.next); - pst->read_symtab_private = ((char *) - obstack_alloc (&objfile->psymbol_obstack, - sizeof (struct symloc))); - memset ((PTR) pst->read_symtab_private, 0, sizeof (struct symloc)); - - save_pst = pst; - FDR_IDX (pst) = f_idx; - CUR_BFD (pst) = cur_bfd; - - /* The way to turn this into a symtab is to call... */ - pst->read_symtab = mipscoff_psymtab_to_symtab; - - /* Set up language for the pst. - The language from the FDR is used if it is unambigious (e.g. cfront - with native cc and g++ will set the language to C). - Otherwise we have to deduce the language from the filename. - Native ecoff has every header file in a separate FDR, so - deduce_language_from_filename will return language_unknown for - a header file, which is not what we want. - But the FDRs for the header files are after the FDR for the source - file, so we can assign the language of the source file to the - following header files. Then we save the language in the private - pst data so that we can reuse it when building symtabs. */ - prev_language = psymtab_language; - - switch (fh->lang) - { - case langCplusplusV2: - psymtab_language = language_cplus; - break; - default: - psymtab_language = deduce_language_from_filename (fdr_name (fh)); - break; - } - if (psymtab_language == language_unknown) - psymtab_language = prev_language; - PST_PRIVATE (pst)->pst_language = psymtab_language; - - pst->texthigh = pst->textlow; - - /* For stabs-in-ecoff files, the second symbol must be @stab. - This symbol is emitted by mips-tfile to signal that the - current object file uses encapsulated stabs instead of mips - ecoff for local symbols. (It is the second symbol because - the first symbol is the stFile used to signal the start of a - file). */ - processing_gcc_compilation = 0; - if (fh->csym >= 2) - { - (*swap_sym_in) (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_sym - + (fh->isymBase + 1) * external_sym_size), - &sh); - if (STREQ (ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss, - stabs_symbol)) - processing_gcc_compilation = 2; - } - - if (processing_gcc_compilation != 0) - { - for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) - { - int type_code; - char *namestring; - - (*swap_sym_in) (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_sym - + (fh->isymBase + cur_sdx) * external_sym_size), - &sh); - type_code = ECOFF_UNMARK_STAB (sh.index); - if (!ECOFF_IS_STAB (&sh)) - { - if (sh.st == stProc || sh.st == stStaticProc) - { - long procaddr = sh.value; - long isym; - - - isym = AUX_GET_ISYM (fh->fBigendian, - (ecoff_data (cur_bfd)->external_aux - + fh->iauxBase - + sh.index)); - (*swap_sym_in) (cur_bfd, - (((char *) - ecoff_data (cur_bfd)->external_sym) - + ((fh->isymBase + isym - 1) - * external_sym_size)), - &sh); - if (sh.st == stEnd) - { - long high = procaddr + sh.value; - if (high > pst->texthigh) - pst->texthigh = high; - } - } - continue; - } -#define SET_NAMESTRING() \ - namestring = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss -#define CUR_SYMBOL_TYPE type_code -#define CUR_SYMBOL_VALUE sh.value -#define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\ - pst = save_pst -#define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0 -#define HANDLE_RBRAC(val) \ - if ((val) > save_pst->texthigh) save_pst->texthigh = (val); -#include "partial-stab.h" - } - } - else - { - for (cur_sdx = 0; cur_sdx < fh->csym;) - { - char *name; - enum address_class class; - - (*swap_sym_in) (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_sym - + ((fh->isymBase + cur_sdx) - * external_sym_size)), - &sh); - - if (ECOFF_IS_STAB (&sh)) - { - cur_sdx++; - continue; - } - - /* Non absolute static symbols go into the minimal table. */ - if (sh.sc == scUndefined || sh.sc == scNil - || (sh.index == indexNil - && (sh.st != stStatic || sh.sc == scAbs))) - { - /* FIXME, premature? */ - cur_sdx++; - continue; - } - - name = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss; - - switch (sh.st) - { - long high; - long procaddr; - int new_sdx; - - case stStaticProc: /* Function */ - /* I believe this is used only for file-local functions. - The comment in symconst.h ("load time only static procs") - isn't particularly clear on this point. */ - prim_record_minimal_symbol (name, sh.value, mst_file_text); - /* FALLTHROUGH */ - - case stProc: /* Asm labels apparently */ - ADD_PSYMBOL_TO_LIST (name, strlen (name), - VAR_NAMESPACE, LOC_BLOCK, - objfile->static_psymbols, sh.value, - psymtab_language, objfile); - /* Skip over procedure to next one. */ - if (sh.index >= hdr->iauxMax) - { - /* Should not happen, but does when cross-compiling - with the MIPS compiler. FIXME -- pull later. */ - complain (&index_complaint, name); - new_sdx = cur_sdx + 1; /* Don't skip at all */ - } - else - new_sdx = AUX_GET_ISYM (fh->fBigendian, - (ecoff_data (cur_bfd)->external_aux - + fh->iauxBase - + sh.index)); - procaddr = sh.value; - - if (new_sdx <= cur_sdx) - { - /* This should not happen either... FIXME. */ - complain (&aux_index_complaint, name); - new_sdx = cur_sdx + 1; /* Don't skip backward */ - } - - cur_sdx = new_sdx; - (*swap_sym_in) (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_sym - + ((fh->isymBase + cur_sdx - 1) - * external_sym_size)), - &sh); - if (sh.st != stEnd) - continue; - high = procaddr + sh.value; - if (high > pst->texthigh) - pst->texthigh = high; - continue; - - case stStatic: /* Variable */ - if (sh.sc == scData || sh.sc == scSData || sh.sc == scRData) - prim_record_minimal_symbol (name, sh.value, mst_file_data); - else - prim_record_minimal_symbol (name, sh.value, mst_file_bss); - class = LOC_STATIC; - break; - - case stTypedef:/* Typedef */ - class = LOC_TYPEDEF; - break; - - case stConstant: /* Constant decl */ - class = LOC_CONST; - break; - - case stUnion: - case stStruct: - case stEnum: - case stBlock: /* { }, str, un, enum*/ - if (sh.sc == scInfo || sh.sc == scCommon) - { - ADD_PSYMBOL_TO_LIST (name, strlen (name), - STRUCT_NAMESPACE, LOC_TYPEDEF, - objfile->static_psymbols, - sh.value, - psymtab_language, objfile); - } - /* Skip over the block */ - new_sdx = sh.index; - if (new_sdx <= cur_sdx) - { - /* This happens with the Ultrix kernel. */ - complain (&block_index_complaint, name); - new_sdx = cur_sdx + 1; /* Don't skip backward */ - } - cur_sdx = new_sdx; - continue; - - case stFile: /* File headers */ - case stLabel: /* Labels */ - case stEnd: /* Ends of files */ - goto skip; - - case stLocal: /* Local variables */ - /* Normally these are skipped because we skip over - all blocks we see. However, these can occur - as visible symbols in a .h file that contains code. */ - goto skip; - - default: - /* Both complaints are valid: one gives symbol name, - the other the offending symbol type. */ - complain (&unknown_sym_complaint, name); - complain (&unknown_st_complaint, sh.st); - cur_sdx++; - continue; - } - /* Use this gdb symbol */ - ADD_PSYMBOL_TO_LIST (name, strlen (name), - VAR_NAMESPACE, class, - objfile->static_psymbols, sh.value, - psymtab_language, objfile); - skip: - cur_sdx++; /* Go to next file symbol */ - } - - /* Now do enter the external symbols. */ - ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; - cur_sdx = fdr_to_pst[f_idx].n_globals; - PST_PRIVATE (save_pst)->extern_count = cur_sdx; - PST_PRIVATE (save_pst)->extern_tab = ext_ptr; - for (; --cur_sdx >= 0; ext_ptr++) - { - enum address_class class; - SYMR *psh; - char *name; - - if (ext_ptr->ifd != f_idx) - abort (); - psh = &ext_ptr->asym; - - /* Do not add undefined symbols to the partial symbol table. */ - if (psh->sc == scUndefined || psh->sc == scNil) - continue; - - switch (psh->st) - { - case stNil: - /* These are generated for static symbols in .o files, - ignore them. */ - continue; - case stProc: - case stStaticProc: - class = LOC_BLOCK; - break; - case stLabel: - class = LOC_LABEL; - break; - default: - complain (&unknown_ext_complaint, - ecoff_data (cur_bfd)->ssext + psh->iss); - /* Fall through, pretend it's global. */ - case stGlobal: - class = LOC_STATIC; - break; - } - name = ecoff_data (cur_bfd)->ssext + psh->iss; - ADD_PSYMBOL_ADDR_TO_LIST (name, strlen (name), - VAR_NAMESPACE, class, - objfile->global_psymbols, (CORE_ADDR) psh->value, - psymtab_language, objfile); - } - } - - /* Link pst to FDR. end_psymtab returns NULL if the psymtab was - empty and put on the free list. */ - fdr_to_pst[f_idx].pst = end_psymtab (save_pst, - psymtab_include_list, includes_used, - -1, save_pst->texthigh, - dependency_list, dependencies_used); - if (objfile->ei.entry_point >= save_pst->textlow && - objfile->ei.entry_point < save_pst->texthigh) - { - objfile->ei.entry_file_lowpc = save_pst->textlow; - objfile->ei.entry_file_highpc = save_pst->texthigh; - } - } - - /* Now scan the FDRs for dependencies */ - for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) - { - fh = f_idx + ecoff_data (cur_bfd)->fdr; - pst = fdr_to_pst[f_idx].pst; - - if (pst == (struct partial_symtab *)NULL) - continue; - - /* This should catch stabs-in-ecoff. */ - if (fh->crfd <= 1) - continue; - - /* Skip the first file indirect entry as it is a self dependency - for source files or a reverse .h -> .c dependency for header files. */ - pst->number_of_dependencies = 0; - pst->dependencies = - ((struct partial_symtab **) - obstack_alloc (&objfile->psymbol_obstack, - ((fh->crfd - 1) - * sizeof (struct partial_symtab *)))); - for (s_idx = 1; s_idx < fh->crfd; s_idx++) - { - RFDT rh; - - (*swap_rfd_in) (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_rfd - + (fh->rfdBase + s_idx) * external_rfd_size), - &rh); - if (rh < 0 || rh >= hdr->ifdMax) - { - complain (&bad_file_number_complaint, rh); - continue; - } - - /* Skip self dependencies of header files. */ - if (rh == f_idx) - continue; - - /* Do not add to dependeny list if psymtab was empty. */ - if (fdr_to_pst[rh].pst == (struct partial_symtab *)NULL) - continue; - pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst; - } - } - do_cleanups (old_chain); -} - - -static char * -mips_next_symbol_text () -{ - SYMR sh; - - cur_sdx++; - (*ecoff_backend (cur_bfd)->swap_sym_in) - (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_sym - + ((cur_fdr->isymBase + cur_sdx) - * ecoff_backend (cur_bfd)->external_sym_size)), - &sh); - return ecoff_data (cur_bfd)->ss + cur_fdr->issBase + sh.iss; -} - -/* Ancillary function to psymtab_to_symtab(). Does all the work - for turning the partial symtab PST into a symtab, recurring - first on all dependent psymtabs. The argument FILENAME is - only passed so we can see in debug stack traces what file - is being read. - - This function has a split personality, based on whether the - symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. - The flow of control and even the memory allocation differs. FIXME. */ - -static void -psymtab_to_symtab_1 (pst, filename) - struct partial_symtab *pst; - char *filename; -{ - const bfd_size_type external_sym_size - = ecoff_backend (cur_bfd)->external_sym_size; - const bfd_size_type external_pdr_size - = ecoff_backend (cur_bfd)->external_pdr_size; - void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) - = ecoff_backend (cur_bfd)->swap_sym_in; - void (* const swap_pdr_in) PARAMS ((bfd *, PTR, PDR *)) - = ecoff_backend (cur_bfd)->swap_pdr_in; - int i; - struct symtab *st; - FDR *fh; - struct linetable *lines; - - if (pst->readin) - return; - pst->readin = 1; - - /* Read in all partial symbtabs on which this one is dependent. - NOTE that we do have circular dependencies, sigh. We solved - that by setting pst->readin before this point. */ - - for (i = 0; i < pst->number_of_dependencies; i++) - if (!pst->dependencies[i]->readin) - { - /* Inform about additional files to be read in. */ - if (info_verbose) - { - fputs_filtered (" ", stdout); - wrap_here (""); - fputs_filtered ("and ", stdout); - wrap_here (""); - printf_filtered ("%s...", - pst->dependencies[i]->filename); - wrap_here (""); /* Flush output */ - fflush (stdout); - } - /* We only pass the filename for debug purposes */ - psymtab_to_symtab_1 (pst->dependencies[i], - pst->dependencies[i]->filename); - } - - /* Do nothing if this is a dummy psymtab. */ - - if (pst->n_global_syms == 0 && pst->n_static_syms == 0 - && pst->textlow == 0 && pst->texthigh == 0) - return; - - /* Now read the symbols for this symtab */ - - cur_bfd = CUR_BFD (pst); - current_objfile = pst->objfile; - cur_fd = FDR_IDX (pst); - fh = (cur_fd == -1) ? (FDR *) NULL : ecoff_data (cur_bfd)->fdr + cur_fd; - cur_fdr = fh; - - /* See comment in parse_partial_symbols about the @stabs sentinel. */ - processing_gcc_compilation = 0; - if (fh != (FDR *) NULL && fh->csym >= 2) - { - SYMR sh; - - (*swap_sym_in) (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_sym - + (fh->isymBase + 1) * external_sym_size), - &sh); - if (STREQ (ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss, - stabs_symbol)) - { - /* We indicate that this is a GCC compilation so that certain - features will be enabled in stabsread/dbxread. */ - processing_gcc_compilation = 2; - } - } - - if (processing_gcc_compilation != 0) - { - char *pdr_ptr; - char *pdr_end; - int first_pdr; - unsigned long first_off = 0; - - /* This symbol table contains stabs-in-ecoff entries. */ - - /* Parse local symbols first */ - - if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */ - { - current_objfile = NULL; - return; - } - for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) - { - SYMR sh; - char *name; - CORE_ADDR valu; - - (*swap_sym_in) (cur_bfd, - ((char *) ecoff_data (cur_bfd)->external_sym - + (fh->isymBase + cur_sdx) * external_sym_size), - &sh); - name = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss; - valu = sh.value; - if (ECOFF_IS_STAB (&sh)) - { - int type_code = ECOFF_UNMARK_STAB (sh.index); - process_one_symbol (type_code, 0, valu, name, - pst->section_offsets, pst->objfile); - if (type_code == N_FUN) - { - /* Make up special symbol to contain - procedure specific info */ - struct mips_extra_func_info *e = - ((struct mips_extra_func_info *) - obstack_alloc (¤t_objfile->symbol_obstack, - sizeof (struct mips_extra_func_info))); - struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME); - SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; - SYMBOL_CLASS (s) = LOC_CONST; - SYMBOL_TYPE (s) = builtin_type_void; - SYMBOL_VALUE (s) = (long) e; - add_symbol_to_list (s, &local_symbols); - } - } - else if (sh.st == stLabel && sh.index != indexNil) - { - /* Handle encoded stab line number. */ - record_line (current_subfile, sh.index, valu); - } - else if (sh.st == stProc || sh.st == stStaticProc || sh.st == stEnd) - /* These are generated by gcc-2.x, do not complain */ - ; - else - complain (&stab_unknown_complaint, name); - } - st = end_symtab (pst->texthigh, 0, 0, pst->objfile, SECT_OFF_TEXT); - end_stabs (); - - /* Sort the symbol table now, we are done adding symbols to it. - We must do this before parse_procedure calls lookup_symbol. */ - sort_symtab_syms (st); - - /* This may not be necessary for stabs symtabs. FIXME. */ - sort_blocks (st); - - /* Fill in procedure info next. */ - first_pdr = 1; - pdr_ptr = ((char *) ecoff_data (cur_bfd)->external_pdr - + fh->ipdFirst * external_pdr_size); - pdr_end = pdr_ptr + fh->cpd * external_pdr_size; - for (; pdr_ptr < pdr_end; pdr_ptr += external_pdr_size) - { - PDR pr; - - (*swap_pdr_in) (cur_bfd, pdr_ptr, &pr); - if (first_pdr) - { - first_off = pr.adr; - first_pdr = 0; - } - parse_procedure (&pr, st, first_off); - } - } - else - { - /* This symbol table contains ordinary ecoff entries. */ - - /* FIXME: doesn't use pst->section_offsets. */ - - int f_max; - int maxlines; - EXTR *ext_ptr; - - /* How many symbols will we need */ - /* FIXME, this does not count enum values. */ - f_max = pst->n_global_syms + pst->n_static_syms; - if (fh == 0) - { - maxlines = 0; - st = new_symtab ("unknown", f_max, 0, pst->objfile); - } - else - { - f_max += fh->csym + fh->cpd; - maxlines = 2 * fh->cline; - st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile); - - /* The proper language was already determined when building - the psymtab, use it. */ - st->language = PST_PRIVATE (pst)->pst_language; - } - - psymtab_language = st->language; - - lines = LINETABLE (st); - - /* Get a new lexical context */ - - push_parse_stack (); - top_stack->cur_st = st; - top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st), - STATIC_BLOCK); - BLOCK_START (top_stack->cur_block) = fh ? fh->adr : 0; - BLOCK_END (top_stack->cur_block) = 0; - top_stack->blocktype = stFile; - top_stack->maxsyms = 2 * f_max; - top_stack->cur_type = 0; - top_stack->procadr = 0; - top_stack->numargs = 0; - - if (fh) - { - char *sym_ptr; - char *sym_end; - - /* Parse local symbols first */ - sym_ptr = ((char *) ecoff_data (cur_bfd)->external_sym - + fh->isymBase * external_sym_size); - sym_end = sym_ptr + fh->csym * external_sym_size; - while (sym_ptr < sym_end) - { - SYMR sh; - int c; - - (*swap_sym_in) (cur_bfd, sym_ptr, &sh); - c = parse_symbol (&sh, - (ecoff_data (cur_bfd)->external_aux - + fh->iauxBase), - sym_ptr, fh->fBigendian); - sym_ptr += c * external_sym_size; - } - - /* Linenumbers. At the end, check if we can save memory. - parse_lines has to look ahead an arbitrary number of PDR - structures, so we swap them all first. */ - if (fh->cpd > 0) - { - PDR *pr_block; - struct cleanup *old_chain; - char *pdr_ptr; - char *pdr_end; - PDR *pdr_in; - PDR *pdr_in_end; - - pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR)); - - old_chain = make_cleanup (free, pr_block); - - pdr_ptr = ((char *) ecoff_data (cur_bfd)->external_pdr - + fh->ipdFirst * external_pdr_size); - pdr_end = pdr_ptr + fh->cpd * external_pdr_size; - pdr_in = pr_block; - for (; - pdr_ptr < pdr_end; - pdr_ptr += external_pdr_size, pdr_in++) - (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in); - - parse_lines (fh, pr_block, lines, maxlines); - if (lines->nitems < fh->cline) - lines = shrink_linetable (lines); - - /* Fill in procedure info next. */ - pdr_in = pr_block; - pdr_in_end = pdr_in + fh->cpd; - for (; pdr_in < pdr_in_end; pdr_in++) - parse_procedure (pdr_in, 0, pr_block->adr); - - do_cleanups (old_chain); - } - } - - LINETABLE (st) = lines; - - /* .. and our share of externals. - XXX use the global list to speed up things here. how? - FIXME, Maybe quit once we have found the right number of ext's? */ - top_stack->cur_st = st; - top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st), - GLOBAL_BLOCK); - top_stack->blocktype = stFile; - top_stack->maxsyms = (ecoff_data (cur_bfd)->symbolic_header.isymMax - + ecoff_data (cur_bfd)->symbolic_header.ipdMax - + ecoff_data (cur_bfd)->symbolic_header.iextMax); - - ext_ptr = PST_PRIVATE (pst)->extern_tab; - for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++) - parse_external (ext_ptr, 1, fh->fBigendian); - - /* If there are undefined symbols, tell the user. - The alpha has an undefined symbol for every symbol that is - from a shared library, so tell the user only if verbose is on. */ - if (info_verbose && n_undef_symbols) - { - printf_filtered ("File %s contains %d unresolved references:", - st->filename, n_undef_symbols); - printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n", - n_undef_vars, n_undef_procs, n_undef_labels); - n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; - - } - pop_parse_stack (); - - /* Sort the symbol table now, we are done adding symbols to it.*/ - sort_symtab_syms (st); - - sort_blocks (st); - } - - /* Now link the psymtab and the symtab. */ - pst->symtab = st; - - current_objfile = NULL; -} - -/* Ancillary parsing procedures. */ - -/* Lookup the type at relative index RN. Return it in TPP - if found and in any event come up with its name PNAME. - BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). - Return value says how many aux symbols we ate. */ - -static int -cross_ref (fd, ax, tpp, type_code, pname, bigend, sym_name) - int fd; - union aux_ext *ax; - struct type **tpp; - enum type_code type_code; /* Use to alloc new type if none is found. */ - char **pname; - int bigend; - char *sym_name; -{ - RNDXR rn[1]; - unsigned int rf; - int result = 1; - FDR *fh; - char *esh; - SYMR sh; - int xref_fd; - struct mips_pending *pend; - - *tpp = (struct type *)NULL; - - ecoff_swap_rndx_in (bigend, &ax->a_rndx, rn); - - /* Escape index means 'the next one' */ - if (rn->rfd == 0xfff) - { - result++; - rf = AUX_GET_ISYM (bigend, ax + 1); - } - else - { - rf = rn->rfd; - } - - /* mips cc uses a rf of -1 for opaque struct definitions. - Set TYPE_FLAG_STUB for these types so that check_stub_type will - resolve them if the struct gets defined in another compilation unit. */ - if (rf == -1) - { - *pname = "<undefined>"; - *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); - TYPE_FLAGS (*tpp) |= TYPE_FLAG_STUB; - return result; - } - - /* mips cc uses an escaped rn->index of 0 for struct return types - of procedures that were compiled without -g. These will always remain - undefined. */ - if (rn->rfd == 0xfff && rn->index == 0) - { - *pname = "<undefined>"; - return result; - } - - /* Find the relative file descriptor and the symbol in it. */ - fh = get_rfd (fd, rf); - xref_fd = fh - ecoff_data (cur_bfd)->fdr; - - if (rn->index >= fh->csym) - { - /* File indirect entry is corrupt. */ - *pname = "<illegal>"; - complain (&bad_rfd_entry_complaint, - sym_name, xref_fd, rn->index); - return result; - } - - /* If we have processed this symbol then we left a forwarding - pointer to the type in the pending list. If not, we`ll put - it in a list of pending types, to be processed later when - the file will be. In any event, we collect the name for the - type here. */ - - esh = ((char *) ecoff_data (cur_bfd)->external_sym - + ((fh->isymBase + rn->index) - * ecoff_backend (cur_bfd)->external_sym_size)); - (*ecoff_backend (cur_bfd)->swap_sym_in) (cur_bfd, esh, &sh); - - /* Make sure that this type of cross reference can be handled. */ - if (sh.sc != scInfo - || (sh.st != stBlock && sh.st != stTypedef - && sh.st != stStruct && sh.st != stUnion - && sh.st != stEnum)) - { - /* File indirect entry is corrupt. */ - *pname = "<illegal>"; - complain (&bad_rfd_entry_complaint, - sym_name, xref_fd, rn->index); - return result; - } - - *pname = ecoff_data (cur_bfd)->ss + fh->issBase + sh.iss; - - pend = is_pending_symbol (fh, esh); - if (pend) - *tpp = pend->t; - else - { - /* We have not yet seen this type. */ - - if (sh.iss == 0 && sh.st == stTypedef) - { - TIR tir; - - /* alpha cc puts out a stTypedef with a sh.iss of zero for - two cases: - a) forward declarations of structs/unions/enums which are not - defined in this compilation unit. - For these the type will be void. This is a bad design decision - as cross referencing across compilation units is impossible - due to the missing name. - b) forward declarations of structs/unions/enums which are defined - later in this file or in another file in the same compilation - unit. Simply cross reference those again to get the - true type. - The forward references are not entered in the pending list and - in the symbol table. */ - - ecoff_swap_tir_in (bigend, - &(ecoff_data (cur_bfd)->external_aux - + fh->iauxBase + sh.index)->a_ti, - &tir); - if (tir.tq0 != tqNil) - complain (&illegal_forward_tq0_complaint, sym_name); - switch (tir.bt) - { - case btVoid: - *tpp = init_type (type_code, 0, 0, (char *) NULL, - current_objfile); - *pname = "<undefined>"; - break; - - case btStruct: - case btUnion: - case btEnum: - cross_ref (xref_fd, - (ecoff_data (cur_bfd)->external_aux - + fh->iauxBase + sh.index + 1), - tpp, type_code, pname, - fh->fBigendian, sym_name); - break; - - default: - complain (&illegal_forward_bt_complaint, tir.bt, sym_name); - *tpp = init_type (type_code, 0, 0, (char *) NULL, - current_objfile); - break; - } - return result; - } - else if (sh.st == stTypedef) - { - /* Parse the type for a normal typedef. This might recursively call - cross_ref till we get a non typedef'ed type. - FIXME: This is not correct behaviour, but gdb currently - cannot handle typedefs without type copying. But type copying is - impossible as we might have mutual forward references between - two files and the copied type would not get filled in when - we later parse its definition. */ - *tpp = parse_type (xref_fd, - ecoff_data (cur_bfd)->external_aux + fh->iauxBase, - sh.index, - (int *)NULL, - fh->fBigendian, - (ecoff_data (cur_bfd)->ss - + fh->issBase + sh.iss)); - } - else - { - /* Cross reference to a struct/union/enum which is defined - in another file in the same compilation unit but that file - has not been parsed yet. - Initialize the type only, it will be filled in when - it's definition is parsed. */ - *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile); - } - add_pending (fh, esh, *tpp); - } - - /* We used one auxent normally, two if we got a "next one" rf. */ - return result; -} - - -/* Quick&dirty lookup procedure, to avoid the MI ones that require - keeping the symtab sorted */ - -static struct symbol * -mylookup_symbol (name, block, namespace, class) - char *name; - register struct block *block; - enum namespace namespace; - enum address_class class; -{ - register int bot, top, inc; - register struct symbol *sym; - - bot = 0; - top = BLOCK_NSYMS (block); - inc = name[0]; - while (bot < top) - { - sym = BLOCK_SYM (block, bot); - if (SYMBOL_NAME (sym)[0] == inc - && SYMBOL_NAMESPACE (sym) == namespace - && SYMBOL_CLASS (sym) == class - && strcmp (SYMBOL_NAME (sym), name) == 0) - return sym; - bot++; - } - block = BLOCK_SUPERBLOCK (block); - if (block) - return mylookup_symbol (name, block, namespace, class); - return 0; -} - - -/* Add a new symbol S to a block B. - Infrequently, we will need to reallocate the block to make it bigger. - We only detect this case when adding to top_stack->cur_block, since - that's the only time we know how big the block is. FIXME. */ - -static void -add_symbol (s, b) - struct symbol *s; - struct block *b; -{ - int nsyms = BLOCK_NSYMS (b)++; - struct block *origb; - struct parse_stack *stackp; - - if (b == top_stack->cur_block && - nsyms >= top_stack->maxsyms) - { - complain (&block_overflow_complaint, SYMBOL_NAME (s)); - /* In this case shrink_block is actually grow_block, since - BLOCK_NSYMS(b) is larger than its current size. */ - origb = b; - b = shrink_block (top_stack->cur_block, top_stack->cur_st); - - /* Now run through the stack replacing pointers to the - original block. shrink_block has already done this - for the blockvector and BLOCK_FUNCTION. */ - for (stackp = top_stack; stackp; stackp = stackp->next) - { - if (stackp->cur_block == origb) - { - stackp->cur_block = b; - stackp->maxsyms = BLOCK_NSYMS (b); - } - } - } - BLOCK_SYM (b, nsyms) = s; -} - -/* Add a new block B to a symtab S */ - -static void -add_block (b, s) - struct block *b; - struct symtab *s; -{ - struct blockvector *bv = BLOCKVECTOR (s); - - bv = (struct blockvector *) xrealloc ((PTR) bv, - (sizeof (struct blockvector) - + BLOCKVECTOR_NBLOCKS (bv) - * sizeof (bv->block))); - if (bv != BLOCKVECTOR (s)) - BLOCKVECTOR (s) = bv; - - BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b; -} - -/* Add a new linenumber entry (LINENO,ADR) to a linevector LT. - MIPS' linenumber encoding might need more than one byte - to describe it, LAST is used to detect these continuation lines. - - Combining lines with the same line number seems like a bad idea. - E.g: There could be a line number entry with the same line number after the - prologue and GDB should not ignore it (this is a better way to find - a prologue than mips_skip_prologue). - But due to the compressed line table format there are line number entries - for the same line which are needed to bridge the gap to the next - line number entry. These entries have a bogus address info with them - and we are unable to tell them from intended duplicate line number - entries. - This is another reason why -ggdb debugging format is preferable. */ - -static int -add_line (lt, lineno, adr, last) - struct linetable *lt; - int lineno; - CORE_ADDR adr; - int last; -{ - if (last == 0) - last = -2; /* make sure we record first line */ - - if (last == lineno) /* skip continuation lines */ - return lineno; - - lt->item[lt->nitems].line = lineno; - lt->item[lt->nitems++].pc = adr << 2; - return lineno; -} - -/* Sorting and reordering procedures */ - -/* Blocks with a smaller low bound should come first */ - -static int -compare_blocks (arg1, arg2) - const PTR arg1; - const PTR arg2; -{ - register int addr_diff; - struct block **b1 = (struct block **) arg1; - struct block **b2 = (struct block **) arg2; - - addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2))); - if (addr_diff == 0) - return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1))); - return addr_diff; -} - -/* Sort the blocks of a symtab S. - Reorder the blocks in the blockvector by code-address, - as required by some MI search routines */ - -static void -sort_blocks (s) - struct symtab *s; -{ - struct blockvector *bv = BLOCKVECTOR (s); - - if (BLOCKVECTOR_NBLOCKS (bv) <= 2) - { - /* Cosmetic */ - if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0) - BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0; - if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0) - BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0; - return; - } - /* - * This is very unfortunate: normally all functions are compiled in - * the order they are found, but if the file is compiled -O3 things - * are very different. It would be nice to find a reliable test - * to detect -O3 images in advance. - */ - if (BLOCKVECTOR_NBLOCKS (bv) > 3) - qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK), - BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK, - sizeof (struct block *), - compare_blocks); - - { - register CORE_ADDR high = 0; - register int i, j = BLOCKVECTOR_NBLOCKS (bv); - - for (i = FIRST_LOCAL_BLOCK; i < j; i++) - if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i))) - high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)); - BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high; - } - - BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = - BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK)); - - BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = - BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); - BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = - BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); -} - - -/* Constructor/restructor/destructor procedures */ - -/* Allocate a new symtab for NAME. Needs an estimate of how many symbols - MAXSYMS and linenumbers MAXLINES we'll put in it */ - -static struct symtab * -new_symtab (name, maxsyms, maxlines, objfile) - char *name; - int maxsyms; - int maxlines; - struct objfile *objfile; -{ - struct symtab *s = allocate_symtab (name, objfile); - - LINETABLE (s) = new_linetable (maxlines); - - /* All symtabs must have at least two blocks */ - BLOCKVECTOR (s) = new_bvect (2); - BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms); - BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms); - BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) = - BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); - - s->free_code = free_linetable; - - return (s); -} - -/* Allocate a new partial_symtab NAME */ - -static struct partial_symtab * -new_psymtab (name, objfile) - char *name; - struct objfile *objfile; -{ - struct partial_symtab *psymtab; - - psymtab = allocate_psymtab (name, objfile); - - /* Keep a backpointer to the file's symbols */ - - psymtab->read_symtab_private = ((char *) - obstack_alloc (&objfile->psymbol_obstack, - sizeof (struct symloc))); - memset ((PTR) psymtab->read_symtab_private, 0, sizeof (struct symloc)); - CUR_BFD (psymtab) = cur_bfd; - - /* The way to turn this into a symtab is to call... */ - psymtab->read_symtab = mipscoff_psymtab_to_symtab; - return (psymtab); -} - - -/* Allocate a linetable array of the given SIZE. Since the struct - already includes one item, we subtract one when calculating the - proper size to allocate. */ - -static struct linetable * -new_linetable (size) - int size; -{ - struct linetable *l; - - size = (size - 1) * sizeof (l->item) + sizeof (struct linetable); - l = (struct linetable *) xmalloc (size); - l->nitems = 0; - return l; -} - -/* Oops, too big. Shrink it. This was important with the 2.4 linetables, - I am not so sure about the 3.4 ones. - - Since the struct linetable already includes one item, we subtract one when - calculating the proper size to allocate. */ - -static struct linetable * -shrink_linetable (lt) - struct linetable *lt; -{ - - return (struct linetable *) xrealloc ((PTR) lt, - (sizeof (struct linetable) - + ((lt->nitems - 1) - * sizeof (lt->item)))); -} - -/* Allocate and zero a new blockvector of NBLOCKS blocks. */ - -static struct blockvector * -new_bvect (nblocks) - int nblocks; -{ - struct blockvector *bv; - int size; - - size = sizeof (struct blockvector) + nblocks * sizeof (struct block *); - bv = (struct blockvector *) xzalloc (size); - - BLOCKVECTOR_NBLOCKS (bv) = nblocks; - - return bv; -} - -/* Allocate and zero a new block of MAXSYMS symbols */ - -static struct block * -new_block (maxsyms) - int maxsyms; -{ - int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *); - - return (struct block *) xzalloc (size); -} - -/* Ooops, too big. Shrink block B in symtab S to its minimal size. - Shrink_block can also be used by add_symbol to grow a block. */ - -static struct block * -shrink_block (b, s) - struct block *b; - struct symtab *s; -{ - struct block *new; - struct blockvector *bv = BLOCKVECTOR (s); - int i; - - /* Just reallocate it and fix references to the old one */ - - new = (struct block *) xrealloc ((PTR) b, - (sizeof (struct block) - + ((BLOCK_NSYMS (b) - 1) - * sizeof (struct symbol *)))); - - /* Should chase pointers to old one. Fortunately, that`s just - the block`s function and inferior blocks */ - if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b) - SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new; - for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++) - if (BLOCKVECTOR_BLOCK (bv, i) == b) - BLOCKVECTOR_BLOCK (bv, i) = new; - else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b) - BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new; - return new; -} - -/* Create a new symbol with printname NAME */ - -static struct symbol * -new_symbol (name) - char *name; -{ - struct symbol *s = ((struct symbol *) - obstack_alloc (¤t_objfile->symbol_obstack, - sizeof (struct symbol))); - - memset ((PTR) s, 0, sizeof (*s)); - SYMBOL_NAME (s) = name; - SYMBOL_LANGUAGE (s) = psymtab_language; - SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack); - return s; -} - -/* Create a new type with printname NAME */ - -static struct type * -new_type (name) - char *name; -{ - struct type *t; - - t = alloc_type (current_objfile); - TYPE_NAME (t) = name; - TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default; - return t; -} - - -/* Things used for calling functions in the inferior. - These functions are exported to our companion - mips-tdep.c file and are here because they play - with the symbol-table explicitly. */ - -/* Sigtramp: make sure we have all the necessary information - about the signal trampoline code. Since the official code - from MIPS does not do so, we make up that information ourselves. - If they fix the library (unlikely) this code will neutralize itself. */ - -static void -fixup_sigtramp () -{ - struct symbol *s; - struct symtab *st; - struct block *b, *b0 = NULL; - - sigtramp_address = -1; - - /* We have to handle the following cases here: - a) The Mips library has a sigtramp label within sigvec. - b) Irix has a _sigtramp which we want to use, but it also has sigvec. */ - s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL); - if (s != 0) - { - b0 = SYMBOL_BLOCK_VALUE (s); - s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL); - } - if (s == 0) - { - /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */ - s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL); - } - - /* But maybe this program uses its own version of sigvec */ - if (s == 0) - return; - - /* Did we or MIPSco fix the library ? */ - if (SYMBOL_CLASS (s) == LOC_BLOCK) - { - sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s)); - sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s)); - return; - } - - sigtramp_address = SYMBOL_VALUE (s); - sigtramp_end = sigtramp_address + 0x88; /* black magic */ - - /* But what symtab does it live in ? */ - st = find_pc_symtab (SYMBOL_VALUE (s)); - - /* - * Ok, there goes the fix: turn it into a procedure, with all the - * needed info. Note we make it a nested procedure of sigvec, - * which is the way the (assembly) code is actually written. - */ - SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; - SYMBOL_CLASS (s) = LOC_BLOCK; - SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL, - st->objfile); - TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = builtin_type_void; - - /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */ - b = new_block (1); - SYMBOL_BLOCK_VALUE (s) = b; - BLOCK_START (b) = sigtramp_address; - BLOCK_END (b) = sigtramp_end; - BLOCK_FUNCTION (b) = s; - BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0); - add_block (b, st); - sort_blocks (st); - - /* Make a MIPS_EFI_SYMBOL_NAME entry for it */ - { - struct mips_extra_func_info *e = - ((struct mips_extra_func_info *) - xzalloc (sizeof (struct mips_extra_func_info))); - - e->numargs = 0; /* the kernel thinks otherwise */ - /* align_longword(sigcontext + SIGFRAME) */ - e->pdr.frameoffset = 0x150; - e->pdr.framereg = SP_REGNUM; - /* read_next_frame_reg provides the true pc at the time of signal */ - e->pdr.pcreg = PC_REGNUM; - e->pdr.regmask = -2; - e->pdr.regoffset = -(41 * sizeof (int)); - e->pdr.fregmask = -1; - e->pdr.fregoffset = -(7 * sizeof (int)); - e->pdr.isym = (long) s; - e->pdr.adr = sigtramp_address; - - current_objfile = st->objfile; /* Keep new_symbol happy */ - s = new_symbol (MIPS_EFI_SYMBOL_NAME); - SYMBOL_VALUE (s) = (long) e; - SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE; - SYMBOL_CLASS (s) = LOC_CONST; - SYMBOL_TYPE (s) = builtin_type_void; - current_objfile = NULL; - } - - BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s; -} - /* Fake up identical offsets for all sections. */ -struct section_offsets * +static struct section_offsets * mipscoff_symfile_offsets (objfile, addr) struct objfile *objfile; CORE_ADDR addr; @@ -3628,7 +137,7 @@ mipscoff_symfile_offsets (objfile, addr) return section_offsets; } - + /* Initialization */ static struct sym_fns ecoff_sym_fns = @@ -3642,37 +151,8 @@ static struct sym_fns ecoff_sym_fns = NULL /* next: pointer to next struct sym_fns */ }; - void _initialize_mipsread () { add_symtab_fns (&ecoff_sym_fns); - - /* Missing basic types */ - - builtin_type_string = - init_type (TYPE_CODE_STRING, - TARGET_CHAR_BIT / TARGET_CHAR_BIT, - 0, "string", - (struct objfile *) NULL); - builtin_type_complex = - init_type (TYPE_CODE_FLT, - TARGET_COMPLEX_BIT / TARGET_CHAR_BIT, - 0, "complex", - (struct objfile *) NULL); - builtin_type_double_complex = - init_type (TYPE_CODE_FLT, - TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT, - 0, "double complex", - (struct objfile *) NULL); - builtin_type_fixed_dec = - init_type (TYPE_CODE_INT, - TARGET_INT_BIT / TARGET_CHAR_BIT, - 0, "fixed decimal", - (struct objfile *) NULL); - builtin_type_float_dec = - init_type (TYPE_CODE_FLT, - TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, - 0, "floating decimal", - (struct objfile *) NULL); } |