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* libhppa.h (R_HPPA_ESEL): New field selector. 

(e_esel): Similarly.
        * som.c (hppa_som_gen_reloc_type): If we encounter an e_esel,
        then generate R_COMP2 (PUSH_SYM), R_DATA_EXPR fixup stream.
        (som_write_fixups): Handle R_DATA_EXPR just like R_CODE_EXPR.
Making another stab at EH support on the PA.
This commit is contained in:
Jeff Law 1996-07-30 20:16:27 +00:00
parent 2ed9fe477a
commit ad240a8289
3 changed files with 104 additions and 10 deletions
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8
bfd/ChangeLog
View File

@ -1,3 +1,11 @@
Tue Jul 30 14:14:57 1996 Jeffrey A Law (law@cygnus.com)
* libhppa.h (R_HPPA_ESEL): New field selector.
(e_esel): Similarly.
* som.c (hppa_som_gen_reloc_type): If we encounter an e_esel,
then generate R_COMP2 (PUSH_SYM), R_DATA_EXPR fixup stream.
(som_write_fixups): Handle R_DATA_EXPR just like R_CODE_EXPR.
Tue Jul 30 13:31:27 1996 Ian Lance Taylor <ian@cygnus.com>
* xcofflink.c (_bfd_xcoff_bfd_link_add_symbols): Do the regular

67
bfd/libhppa.h
View File

@ -34,6 +34,46 @@
#endif /* GNU C? */
#endif /* INLINE */
#if __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
/* Declare the functions with the unused attribute to avoid warnings. */
static INLINE unsigned int assemble_3 (unsigned int)
__attribute__ ((__unused__));
static INLINE void dis_assemble_3 (unsigned int, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned int assemble_12 (unsigned int, unsigned int)
__attribute__ ((__unused__));
static INLINE void dis_assemble_12 (unsigned int, unsigned int *,
unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long assemble_17 (unsigned int, unsigned int,
unsigned int)
__attribute__ ((__unused__));
static INLINE void dis_assemble_17 (unsigned int, unsigned int *,
unsigned int *, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long assemble_21 (unsigned int)
__attribute ((__unused__));
static INLINE void dis_assemble_21 (unsigned int, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long sign_extend (unsigned int, unsigned int)
__attribute__ ((__unused__));
static INLINE unsigned int ones (int) __attribute ((__unused__));
static INLINE void sign_unext (unsigned int, unsigned int, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long low_sign_extend (unsigned int, unsigned int)
__attribute__ ((__unused__));
static INLINE void low_sign_unext (unsigned int, unsigned int, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long hppa_field_adjust (unsigned long, unsigned long,
unsigned short)
__attribute__ ((__unused__));
static INLINE char bfd_hppa_insn2fmt (unsigned long)
__attribute__ ((__unused__));
static INLINE unsigned long hppa_rebuild_insn (bfd *, unsigned long,
unsigned long, unsigned long)
__attribute__ ((__unused__));
#endif /* gcc 2.7 or higher */
/* The PA instruction set variants. */
enum pa_arch {pa10 = 10, pa11 = 11, pa20 = 20};
@ -58,7 +98,8 @@ enum hppa_reloc_field_selector_type
R_HPPA_RPSEL = 0xe,
R_HPPA_TSEL = 0xf,
R_HPPA_LTSEL = 0x10,
R_HPPA_RTSEL = 0x11
R_HPPA_RTSEL = 0x11,
R_HPPA_ESEL = 0xff
};
/* /usr/include/reloc.h defines these to constants. We want to use
@ -84,6 +125,7 @@ enum hppa_reloc_field_selector_type
#undef e_tsel
#undef e_ltsel
#undef e_rtsel
#undef e_esel
#undef e_one
#undef e_two
#undef e_pcrel
@ -111,7 +153,8 @@ enum hppa_reloc_field_selector_type_alt
e_rpsel = R_HPPA_RPSEL,
e_tsel = R_HPPA_TSEL,
e_ltsel = R_HPPA_LTSEL,
e_rtsel = R_HPPA_RTSEL
e_rtsel = R_HPPA_RTSEL,
e_esel = R_HPPA_ESEL
};
enum hppa_reloc_expr_type
@ -517,9 +560,13 @@ hppa_rebuild_insn (abfd, insn, value, r_format)
}
case 14:
const_part = insn & 0xffffc000;
low_sign_unext (value, 14, &rebuilt_part);
return const_part | rebuilt_part;
{
unsigned int ext;
const_part = insn & 0xffffc000;
low_sign_unext (value, 14, &ext);
return const_part | ext;
}
case 17:
{
@ -532,9 +579,13 @@ hppa_rebuild_insn (abfd, insn, value, r_format)
}
case 21:
const_part = insn & 0xffe00000;
dis_assemble_21 (value, &rebuilt_part);
return const_part | rebuilt_part;
{
unsigned int w;
const_part = insn & 0xffe00000;
dis_assemble_21 (value, &w);
return const_part | w;
}
case 32:
const_part = 0;

39
bfd/som.c
View File

@ -1585,6 +1585,15 @@ hppa_som_gen_reloc_type (abfd, base_type, format, field, sym_diff)
final_types[5] = NULL;
break;
}
else if (field == e_esel)
{
final_types[0] = (int *)bfd_alloc_by_size_t (abfd, sizeof (int));
*final_types[0] = R_COMP2;
final_types[1] = final_type;
*final_types[1] = R_DATA_EXPR;
final_types[2] = NULL;
break;;
}
/* PLABELs get their own relocation type. */
else if (field == e_psel
|| field == e_lpsel
@ -2631,8 +2640,6 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
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_ALT_ENTRY:
case R_EXIT:
@ -2647,6 +2654,8 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
case R_COMP2:
case R_BEGIN_BRTAB:
case R_END_BRTAB:
case R_BEGIN_TRY:
case R_END_TRY:
case R_N0SEL:
case R_N1SEL:
reloc_offset = bfd_reloc->address;
@ -2780,6 +2789,7 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
case R_RSEL:
case R_BEGIN_BRTAB:
case R_END_BRTAB:
case R_BEGIN_TRY:
case R_N0SEL:
case R_N1SEL:
bfd_put_8 (abfd, bfd_reloc->howto->type, p);
@ -2787,6 +2797,29 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
p += 1;
break;
case R_END_TRY:
/* The end of a exception handling region. The reloc's
addend contains the offset of the exception handling
code. */
if (bfd_reloc->addend == 0)
bfd_put_8 (abfd, bfd_reloc->howto->type, p);
else if (bfd_reloc->addend < 1024)
{
bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p);
bfd_put_8 (abfd, bfd_reloc->addend / 4, p + 1);
p = try_prev_fixup (abfd, &subspace_reloc_size,
p, 2, reloc_queue);
}
else
{
bfd_put_8 (abfd, bfd_reloc->howto->type + 2, p);
bfd_put_8 (abfd, (bfd_reloc->addend / 4) >> 16, p + 1);
bfd_put_16 (abfd, bfd_reloc->addend / 4, p + 2);
p = try_prev_fixup (abfd, &subspace_reloc_size,
p, 4, reloc_queue);
}
break;
case R_COMP1:
/* The only time we generate R_COMP1, R_COMP2 and
R_CODE_EXPR relocs is for the difference of two
@ -2810,6 +2843,7 @@ som_write_fixups (abfd, current_offset, total_reloc_sizep)
break;
case R_CODE_EXPR:
case R_DATA_EXPR:
/* The only time we generate R_COMP1, R_COMP2 and
R_CODE_EXPR relocs is for the difference of two
symbols. Hence we can cheat here. */
@ -4625,6 +4659,7 @@ som_slurp_reloc_table (abfd, section, symbols, just_count)
/* We're done with the external relocations. Free them. */
free (external_relocs);
som_section_data (section)->reloc_stream = NULL;
/* Save our results and return success. */
section->relocation = internal_relocs;