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* som.c (som_hppa_howto_table): Add missing R_END_TRY. Delete

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extra R_DATA_OVERRIDE.
        (hppa_som_gen_reloc_type): Generate a relocation for the rounding
        mode selector if needed.
        (som_write_fixups): Handle requests for a change in the default
        rounding mode.  Rounding modes do not consume input bytes, but
        are just markers much like R_ENTRY and R_EXIT.
This commit is contained in:
Jeff Law 1993-12-06 03:33:06 +00:00
parent 9fad66b50b
commit 017a52d7a9
2 changed files with 210 additions and 17 deletions
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24
bfd/ChangeLog
View File

@ -1,7 +1,31 @@
Sun Dec 5 19:32:08 1993 Jeffrey A. Law (law@snake.cs.utah.edu)
* som.c (som_hppa_howto_table): Add missing R_END_TRY. Delete
extra R_DATA_OVERRIDE.
(hppa_som_gen_reloc_type): Generate a relocation for the rounding
mode selector if needed.
(som_write_fixups): Handle requests for a change in the default
rounding mode. Rounding modes do not consume input bytes, but
are just markers much like R_ENTRY and R_EXIT.
Sat Dec 4 19:40:32 1993 Jeffrey A. Law (law@snake.cs.utah.edu)
Fri Dec 3 09:55:17 1993 Pete Hoogenboom (hoogen@cs.utah.edu)
* elf32-hppa.c: (hppa_elf_reloc): Do not do code reordering when
the branch instruction as originally been nullified.
hppa_elf_reloc): Avoid useless call to bfd_put_32 () in the
case of no code reordering due to an LDO instruction in the
delay slot of the branch. Make sure to relocate the correct
instruction. Do not perform instruction reordering for millicode
calls.
(hppa_elf_build_arg_reloc_stub): Change the relocation type
to R_HPPA_STUB_CALL_17 when special processing might be needed.
(hppa_elf_build_long_branch_stub): Prevent code reordering on
a call from a linker stub to another linker stub and for millicode
calls. Do not trash the return register for calls from one linker
stub to a second linker stub.
* elf32-hppa.c: (elf_hppa_howto_table): PLABEL and DLT
relocations are not pc-relative.

203
bfd/som.c
View File

@ -102,6 +102,12 @@ typedef enum
SYMBOL_TYPE_SEC_PROG,
} pa_symbol_type;
struct section_to_type
{
char *section;
char type;
};
/* Forward declarations */
static boolean som_mkobject PARAMS ((bfd *));
@ -182,6 +188,37 @@ static boolean som_write_symbol_strings PARAMS ((bfd *, unsigned long,
static boolean som_begin_writing PARAMS ((bfd *));
static const reloc_howto_type * som_bfd_reloc_type_lookup
PARAMS ((bfd_arch_info_type *, bfd_reloc_code_real_type));
static char som_section_type PARAMS ((const char *));
static int som_decode_symclass PARAMS ((asymbol *));
/* Map SOM section names to POSIX/BSD single-character symbol types.
This table includes all the standard subspaces as defined in the
current "PRO ABI for PA-RISC Systems", $UNWIND$ which for
some reason was left out, and sections specific to embedded stabs. */
static const struct section_to_type stt[] = {
{"$TEXT$", 't'},
{"$SHLIB_INFO$", 't'},
{"$MILLICODE$", 't'},
{"$LIT$", 't'},
{"$CODE$", 't'},
{"$UNWIND_START$", 't'},
{"$UNWIND$", 't'},
{"$PRIVATE$", 'd'},
{"$PLT$", 'd'},
{"$SHLIB_DATA$", 'd'},
{"$DATA$", 'd'},
{"$SHORTDATA$", 'g'},
{"$DLT$", 'd'},
{"$GLOBAL$", 'g'},
{"$SHORTBSS$", 's'},
{"$BSS$", 'b'},
{"$GDB_STRINGS$", 'N'},
{"$GDB_SYMBOLS$", 'N'},
{0, 0}
};
/* About the relocation formatting table...
@ -803,6 +840,7 @@ static reloc_howto_type som_hppa_howto_table[] =
{R_BEGIN_TRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_BEGIN_TRY"},
{R_END_TRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_END_TRY"},
{R_END_TRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_END_TRY"},
{R_END_TRY, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_END_TRY"},
{R_BEGIN_BRTAB, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_BEGIN_BRTAB"},
{R_END_BRTAB, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_END_BRTAB"},
{R_STATEMENT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_STATEMENT"},
@ -822,7 +860,6 @@ static reloc_howto_type som_hppa_howto_table[] =
{R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
{R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
{R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
{R_DATA_OVERRIDE, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_DATA_OVERRIDE"},
{R_TRANSLATED, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_TRANSLATED"},
{R_STATEMENT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_STATEMENT"},
{R_STATEMENT, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_STATEMENT"},
@ -1290,20 +1327,70 @@ hppa_som_gen_reloc_type (abfd, base_type, format, field)
bfd *abfd;
int base_type;
int format;
int field;
enum hppa_reloc_field_selector_type field;
{
int *final_type, **final_types;
final_types = (int **) bfd_alloc_by_size_t (abfd, sizeof (int *) * 2);
final_types = (int **) bfd_alloc_by_size_t (abfd, sizeof (int *) * 3);
final_type = (int *) bfd_alloc_by_size_t (abfd, sizeof (int));
/* The field selector may require additional relocations to be
generated. It's impossible to know at this moment if additional
relocations will be needed, so we make them. The code to actually
write the relocation/fixup stream is responsible for removing
any redundant relocations. */
switch (field)
{
case e_fsel:
case e_psel:
case e_lpsel:
case e_rpsel:
case e_tsel:
case e_ltsel:
case e_rtsel:
final_types[0] = final_type;
final_types[1] = NULL;
final_types[2] = NULL;
*final_type = base_type;
break;
final_types[0] = final_type;
final_types[1] = NULL;
case e_lssel:
case e_rssel:
final_types[0] = (int *) bfd_alloc_by_size_t (abfd, sizeof (int));
*final_types[0] = R_S_MODE;
final_types[1] = final_type;
final_types[2] = NULL;
*final_type = base_type;
break;
/* Default to the basic relocation passed in. */
*final_type = base_type;
case e_lsel:
case e_rsel:
final_types[0] = (int *) bfd_alloc_by_size_t (abfd, sizeof (int));
*final_types[0] = R_N_MODE;
final_types[1] = final_type;
final_types[2] = NULL;
*final_type = base_type;
break;
case e_ldsel:
case e_rdsel:
final_types[0] = (int *) bfd_alloc_by_size_t (abfd, sizeof (int));
*final_types[0] = R_D_MODE;
final_types[1] = final_type;
final_types[2] = NULL;
*final_type = base_type;
break;
case e_lrsel:
case e_rrsel:
final_types[0] = (int *) bfd_alloc_by_size_t (abfd, sizeof (int));
*final_types[0] = R_R_MODE;
final_types[1] = final_type;
final_types[2] = NULL;
*final_type = base_type;
break;
}
switch (base_type)
{
case R_HPPA:
@ -1649,6 +1736,9 @@ som_object_p (abfd)
#endif
#ifdef EXECLIBMAGIC
case EXECLIBMAGIC:
#endif
#ifdef SHARED_MAGIC_CNX
case SHARED_MAGIC_CNX:
#endif
break;
default:
@ -2002,7 +2092,7 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
subsection != NULL;
subsection = subsection->next)
{
int reloc_offset;
int reloc_offset, current_rounding_mode;
/* Find a subspace of this space. */
if (som_section_data (subsection)->is_subspace == 0
@ -2039,6 +2129,7 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
subspace_reloc_size = 0;
reloc_offset = 0;
som_initialize_reloc_queue (reloc_queue);
current_rounding_mode = R_N_MODE;
/* Translate each BFD relocation into one or more SOM
relocations. */
@ -2082,14 +2173,26 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
/* Update reloc_offset for the next iteration.
Note R_ENTRY and R_EXIT relocations are just markers,
they do not consume input bytes. */
if (bfd_reloc->howto->type != R_ENTRY
&& bfd_reloc->howto->type != R_EXIT)
reloc_offset = bfd_reloc->address + 4;
else
reloc_offset = bfd_reloc->address;
Many relocations do not consume input bytes. They
are markers, or set state necessary to perform some
later relocation. */
switch (bfd_reloc->howto->type)
{
/* This only needs to handle relocations that may be
made by hppa_som_gen_reloc. */
case R_ENTRY:
case R_EXIT:
case R_N_MODE:
case R_S_MODE:
case R_D_MODE:
case R_R_MODE:
reloc_offset = bfd_reloc->address;
break;
default:
reloc_offset = bfd_reloc->address + 4;
break;
}
/* Now the actual relocation we care about. */
switch (bfd_reloc->howto->type)
@ -2177,6 +2280,21 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
p += 1;
break;
case R_N_MODE:
case R_S_MODE:
case R_D_MODE:
case R_R_MODE:
/* If this relocation requests the current rounding
mode, then it is redundant. */
if (bfd_reloc->howto->type != current_rounding_mode)
{
bfd_put_8 (abfd, bfd_reloc->howto->type, p);
subspace_reloc_size += 1;
p += 1;
current_rounding_mode = bfd_reloc->howto->type;
}
break;
/* Put a "R_RESERVED" relocation in the stream if
we hit something we do not understand. The linker
will complain loudly if this ever happens. */
@ -2184,6 +2302,7 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
bfd_put_8 (abfd, 0xff, p);
subspace_reloc_size += 1;
p += 1;
break;
}
}
@ -3168,6 +3287,10 @@ som_slurp_symbol_table (abfd)
so the section associated with this symbol can't be known. */
case SS_EXTERNAL:
case SS_UNSAT:
if (bufp->symbol_type != ST_STORAGE)
sym->symbol.section = &bfd_und_section;
else
sym->symbol.section = &bfd_com_section;
sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL);
break;
@ -3816,15 +3939,61 @@ som_sizeof_headers (abfd, reloc)
return (0);
}
/* Return the single-character symbol type corresponding to
SOM section S, or '?' for an unknown SOM section. */
static char
som_section_type (s)
const char *s;
{
const struct section_to_type *t;
for (t = &stt[0]; t->section; t++)
if (!strcmp (s, t->section))
return t->type;
return '?';
}
static int
som_decode_symclass (symbol)
asymbol *symbol;
{
char c;
if (bfd_is_com_section (symbol->section))
return 'C';
if (symbol->section == &bfd_und_section)
return 'U';
if (symbol->section == &bfd_ind_section)
return 'I';
if (!(symbol->flags & (BSF_GLOBAL|BSF_LOCAL)))
return '?';
if (symbol->section == &bfd_abs_section)
c = 'a';
else if (symbol->section)
c = som_section_type (symbol->section->name);
else
return '?';
if (symbol->flags & BSF_GLOBAL)
c = toupper (c);
return c;
}
/* Return information about SOM symbol SYMBOL in RET. */
static void
som_get_symbol_info (ignore_abfd, symbol, ret)
bfd *ignore_abfd; /* Ignored. */
bfd *ignore_abfd;
asymbol *symbol;
symbol_info *ret;
{
bfd_symbol_info (symbol, ret);
ret->type = som_decode_symclass (symbol);
if (ret->type != 'U')
ret->value = symbol->value+symbol->section->vma;
else
ret->value = 0;
ret->name = symbol->name;
}
/* End of miscellaneous support functions. */