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Alter generation of object files to be compatible with latest gdb

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debugger
This commit is contained in:
Lightning 2022-10-28 22:41:45 -07:00
parent ee53382d17
commit 2e31907239
10 changed files with 57 additions and 10 deletions
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10
bfd/elf32-mips.c
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@ -1840,7 +1840,7 @@ _bfd_mips_elf_final_write_processing (abfd, linker)
break;
case 6000:
val = E_MIPS_ARCH_2;
val = E_MIPS_ARCH_6;
break;
case 4000:
@ -2297,6 +2297,14 @@ _bfd_mips_elf_fake_sections (abfd, hdr, sec)
else
hdr->sh_entsize = 1;
}
else if (strcmp (name, ".MIPS.abiflags") == 0)
{
hdr->sh_type = SHT_MIPS_ABIFLAGS;
hdr->sh_entsize = 0x18;
/* Force the section size to the correct value */
hdr->sh_size = sec->_raw_size = 0x18;
}
else if (strcmp (name, ".reginfo") == 0)
{
hdr->sh_type = SHT_MIPS_REGINFO;

6
gas/config/obj-elf.c
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@ -23,6 +23,8 @@
#include "subsegs.h"
#include "obstack.h"
extern int mips_debug;
#ifndef ECOFF_DEBUGGING
#define ECOFF_DEBUGGING 0
#else
@ -1228,7 +1230,7 @@ obj_elf_init_stab_section (seg)
/* Zero it out. */
memset (p, 0, 12);
as_where (&file, (unsigned int *) NULL);
stabstr_name = (char *) alloca (strlen (segment_name (seg)) + 4);
stabstr_name = (char *) malloc (strlen (segment_name (seg)) + 4);
strcpy (stabstr_name, segment_name (seg));
strcat (stabstr_name, "str");
stroff = get_stab_string_offset (file, stabstr_name);
@ -1504,6 +1506,7 @@ elf_frob_file_after_relocs ()
as_fatal ("Failed to set up debugging information: %s",
bfd_errmsg (bfd_get_error ()));
if(mips_debug < 2) {
sec = bfd_get_section_by_name (stdoutput, ".mdebug");
assert (sec != NULL);
@ -1527,6 +1530,7 @@ elf_frob_file_after_relocs ()
sec->filepos))
as_fatal ("Could not write .mdebug section: %s",
bfd_errmsg (bfd_get_error ()));
}
}
#endif /* NEED_ECOFF_DEBUG */
}

3
gas/config/obj-elf.h
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@ -159,6 +159,7 @@ extern void obj_elf_init_stab_section PARAMS ((segT));
/* We smuggle stabs in ECOFF rather than using a separate section.
The Irix linker can not handle a separate stabs section. */
/*
#undef SEPARATE_STAB_SECTIONS
#undef INIT_STAB_SECTION
#define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
@ -166,7 +167,7 @@ extern void obj_elf_init_stab_section PARAMS ((segT));
#define OBJ_GENERATE_ASM_LINENO(filename, lineno) \
ecoff_generate_asm_lineno ((filename), (lineno))
*/
#endif /* ECOFF_DEBUGGING */
extern void elf_frob_symbol PARAMS ((struct symbol *, int *));

22
gas/config/tc-mips.c
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@ -599,7 +599,7 @@ static int mips_optimize = 2;
/* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is
equivalent to seeing no -g option at all. */
static int mips_debug = 0;
int mips_debug = 0;
/* The previous instruction. */
static struct mips_cl_insn prev_insn;
@ -950,7 +950,9 @@ static const pseudo_typeS mips_pseudo_table[] =
{"quad", s_cons, 3},
{"short", s_cons, 1},
{"single", s_float_cons, 'f'},
{"stabd", s_mips_stab, 'd'},
{"stabn", s_mips_stab, 'n'},
{"stabs", s_mips_stab, 's'},
{"text", s_change_sec, 't'},
{"word", s_cons, 2},
{ 0 },
@ -1362,6 +1364,20 @@ md_begin ()
if (strcmp (TARGET_OS, "elf") != 0)
flags |= SEC_ALLOC | SEC_LOAD;
if(mips_debug >= 2) {
char abidata[0x18];
memset(abidata, 0, sizeof(abidata));
*(int *)(&abidata[2]) = 0x01010140;
abidata[7] = 0x01;
abidata[0x13] = 0x01;
sec = subseg_new (".MIPS.abiflags", (subsegT) 0);
(void) bfd_set_section_flags (stdoutput, sec, flags);
(void) bfd_set_section_alignment (stdoutput, sec, 3);
memcpy(frag_more(0x18), abidata, sizeof(abidata));
}
if (! mips_64)
{
sec = subseg_new (".reginfo", (subsegT) 0);
@ -1402,7 +1418,7 @@ md_begin ()
#endif
}
if (ECOFF_DEBUGGING)
if (mips_debug < 2)
{
sec = subseg_new (".mdebug", (subsegT) 0);
(void) bfd_set_section_flags (stdoutput, sec,
@ -10502,7 +10518,6 @@ static void
s_insn (ignore)
int ignore;
{
if (mips_opts.mips16)
mips16_mark_labels ();
demand_empty_rest_of_line ();
@ -11427,6 +11442,7 @@ mips_elf_final_processing ()
elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER;
if (mips_pic != NO_PIC)
elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC;
elf_elfheader (stdoutput)->e_flags = 0x60001101;
}
#endif /* OBJ_ELF || OBJ_MAYBE_ELF */

2
gas/config/tc-mips.h
View File

@ -150,4 +150,6 @@ extern void mips_flush_pending_output PARAMS ((void));
extern void mips_enable_auto_align PARAMS ((void));
#define md_elf_section_change_hook() mips_enable_auto_align()
extern int mips_debug;
#endif /* TC_MIPS */

7
gas/ecoff.c
View File

@ -28,7 +28,7 @@
ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha
ECOFF). */
#ifdef ECOFF_DEBUGGING
#if ECOFF_DEBUGGING
#include "coff/internal.h"
#include "coff/symconst.h"
@ -3169,6 +3169,11 @@ ecoff_directive_file (ignore)
/* FIXME: we don't have to save the name here. */
name = demand_copy_C_string (&len);
symbolS *sym;
sym = symbol_new(name, absolute_section, 0, &zero_address_frag);
sym->bsym->flags |= BSF_FILE;
symbol_table_insert(sym);
add_file (name, indx - 1, 0);
demand_empty_rest_of_line ();

8
gas/stabs.c
View File

@ -61,7 +61,7 @@ static void s_stab_generic PARAMS ((int, char *, char *));
*/
#ifndef SEPARATE_STAB_SECTIONS
#define SEPARATE_STAB_SECTIONS 0
#define SEPARATE_STAB_SECTIONS 1
#endif
unsigned int
@ -284,10 +284,14 @@ s_stab_generic (what, stab_secname, stabstr_secname)
char *p;
static segT cached_sec;
static char *cached_secname;
static char *cached_secname = 0;
dot = frag_now_fix ();
#ifdef md_flush_pending_output
md_flush_pending_output ();
#endif
if (cached_secname && !strcmp (cached_secname, stab_secname))
{
seg = cached_sec;

1
gas/symbols.c
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@ -141,6 +141,7 @@ symbol_create (name, segment, valu, frag)
S_SET_VALUE (symbolP, valu);
symbol_clear_list_pointers (symbolP);
symbolP->written = (memcmp(preserved_copy_of_name, ".L", 2) != 0);
symbolP->sy_frag = frag;
#ifndef BFD_ASSEMBLER
symbolP->sy_number = ~0;

2
gas/write.c
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@ -1803,7 +1803,7 @@ write_object_file ()
/* Skip symbols which were equated to undefined or common
symbols. */
if (symp->sy_value.X_op == O_symbol
&& (! S_IS_DEFINED (symp) || S_IS_COMMON (symp)))
&& (! S_IS_DEFINED (symp) || S_IS_COMMON (symp)) || !symp->written)
{
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
continue;

6
include/elf/mips.h
View File

@ -56,6 +56,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* -mips4 code. */
#define E_MIPS_ARCH_4 0x30000000
/* -mips64 code. */
#define E_MIPS_ARCH_6 0x60000000
/* Processor specific section indices. These sections do not actually
exist. Symbols with a st_shndx field corresponding to one of these
@ -124,6 +127,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Events section. */
#define SHT_MIPS_EVENTS 0x70000021
/* ABI related flags section. */
#define SHT_MIPS_ABIFLAGS 0x7000002a
/* A section of type SHT_MIPS_LIBLIST contains an array of the
following structure. The sh_link field is the section index of the
string table. The sh_info field is the number of entries in the