Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This file is based on a preliminary PowerPC ELF ABI. The
information may not match the final PowerPC ELF ABI. It includes
static bfd_boolean ppc_elf_grok_psinfo
PARAMS ((bfd *abfd, Elf_Internal_Note *note));
-#define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */
-#define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */
-#define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */
+#define BRANCH_PREDICT_BIT 0x200000 /* Branch prediction bit for branch taken relocs. */
+#define RA_REGISTER_MASK 0x001f0000 /* Mask to set RA in memory instructions. */
+#define RA_REGISTER_SHIFT 16 /* Value to shift register by to insert RA. */
/* The name of the dynamic interpreter. This is put in the .interp
section. */
/* The remaining relocs are from the Embedded ELF ABI, and are not
in the SVR4 ELF ABI. */
- /* 32 bit value resulting from the addend minus the symbol */
+ /* 32 bit value resulting from the addend minus the symbol. */
HOWTO (R_PPC_EMB_NADDR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* 16 bit value resulting from the addend minus the symbol */
+ /* 16 bit value resulting from the addend minus the symbol. */
HOWTO (R_PPC_EMB_NADDR16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* 16 bit value resulting from the addend minus the symbol */
+ /* 16 bit value resulting from the addend minus the symbol. */
HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* The high order 16 bits of the addend minus the symbol */
+ /* The high order 16 bits of the addend minus the symbol. */
HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
/* 16 bit value resulting from allocating a 4 byte word to hold an
address in the .sdata section, and returning the offset from
- _SDA_BASE_ for that relocation */
+ _SDA_BASE_ for that relocation. */
HOWTO (R_PPC_EMB_SDAI16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* GNU extension to record C++ vtable hierarchy */
+ /* GNU extension to record C++ vtable hierarchy. */
HOWTO (R_PPC_GNU_VTINHERIT, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* dst_mask */
FALSE), /* pcrel_offset */
- /* GNU extension to record C++ vtable member usage */
+ /* GNU extension to record C++ vtable member usage. */
HOWTO (R_PPC_GNU_VTENTRY, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* dst_mask */
FALSE), /* pcrel_offset */
- /* Phony reloc to handle AIX style TOC entries */
+ /* Phony reloc to handle AIX style TOC entries. */
HOWTO (R_PPC_TOC16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
3/ Conditional forward branches - Ensure that the "inverse prediction
bit" is set (ensure it is predicted taken).
4/ Conditional register branches - Ensure that the "y bit" is set
- (ensure it is predicted taken).
-*/
+ (ensure it is predicted taken). */
/* Sort sections by address. */
The array rela_comb is built here for use in the EOP scan loop. */
switch (r_type)
{
- case R_PPC_ADDR14_BRNTAKEN: /* absolute, predicted not taken */
- case R_PPC_REL14: /* relative cond. br. */
- case R_PPC_REL14_BRNTAKEN: /* rel. cond. br., predicted not taken */
+ case R_PPC_ADDR14_BRNTAKEN: /* Absolute, predicted not taken */
+ case R_PPC_REL14: /* Relative cond. br. */
+ case R_PPC_REL14_BRNTAKEN: /* Rel. cond. br., predicted not taken */
/* We should check the instruction. */
break;
default:
bfd_boolean skip, modified;
/* Don't process this word if there is a relocation for it and
- the relocation indicates the word is not a conditional branch. */
+ the relocation indicates the word is not a conditional branch. */
skip = FALSE;
isec_offset = dot - isec->vma;
for (; comb_curr<comb_count; ++comb_curr)
{
bfd_vma target;
/* This branch is predicted as "normal".
- If this is a forward branch, it is problematic. */
+ If this is a forward branch, it is problematic. */
target = insn & 0x0000Fffc; /*extract*/
target = (target ^ 0x8000) - 0x8000; /*sign extend*/
target += dot; /*convert to abs*/
if (target > dot)
{
- insn |= 0x00200000; /* set the prediction bit */
+ insn |= 0x00200000; /* Set the prediction bit. */
modified = TRUE;
}
}
}
else if ((insn & 0xFc00Fffe) == 0x4c000420)
{
- /* Instruction is BCCTRx */
+ /* Instruction is BCCTRx. */
if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
{
/* This branch is predicted as not-taken.
- If this is a forward branch, it is problematic.
- Since we can't tell statically if it will branch forward,
- always set the prediction bit. */
- insn |= 0x00200000; /* set the prediction bit */
+ If this is a forward branch, it is problematic.
+ Since we can't tell statically if it will branch forward,
+ always set the prediction bit. */
+ insn |= 0x00200000; /* Set the prediction bit. */
modified = TRUE;
}
}
if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
{
/* This branch is predicted as not-taken.
- If this is a forward branch, it is problematic.
- Since we can't tell statically if it will branch forward,
- always set the prediction bit. */
- insn |= 0x00200000; /* set the prediction bit */
+ If this is a forward branch, it is problematic.
+ Since we can't tell statically if it will branch forward,
+ always set the prediction bit. */
+ insn |= 0x00200000; /* Set the prediction bit. */
modified = TRUE;
}
}
}
/* Merge backend specific data from an object file to the output
- object file when linking */
+ object file when linking. */
+
static bfd_boolean
ppc_elf_merge_private_bfd_data (ibfd, obfd)
bfd *ibfd;
flagword new_flags;
bfd_boolean error;
- /* Check if we have the same endianess */
+ /* Check if we have the same endianess. */
if (! _bfd_generic_verify_endian_match (ibfd, obfd))
return FALSE;
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
- if (!elf_flags_init (obfd)) /* First call, no flags set */
+ if (!elf_flags_init (obfd)) /* First call, no flags set. */
{
elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = new_flags;
}
- else if (new_flags == old_flags) /* Compatible flags are ok */
+ else if (new_flags == old_flags) /* Compatible flags are ok. */
;
- else /* Incompatible flags */
+ else /* Incompatible flags. */
{
/* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
with either. */
&& (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
- /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */
+ /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it. */
elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
- /* Warn about any other mismatches */
+ /* Warn about any other mismatches. */
if (new_flags != old_flags)
{
error = TRUE;
bfd *dynobj = elf_hash_table (info)->dynobj;
elf_linker_section_t *lsect;
- /* Record the first bfd section that needs the special section */
+ /* Record the first bfd section that needs the special section. */
if (!dynobj)
dynobj = elf_hash_table (info)->dynobj = abfd;
- /* If this is the first time, create the section */
+ /* If this is the first time, create the section. */
lsect = elf_linker_section (dynobj, which);
if (!lsect)
{
}
break;
- /* Indirect .sdata relocation */
+ /* Indirect .sdata relocation. */
case R_PPC_EMB_SDAI16:
if (info->shared)
{
break;
- /* Indirect .sdata2 relocation */
+ /* Indirect .sdata2 relocation. */
case R_PPC_EMB_SDA2I16:
if (info->shared)
{
case R_PPC_SECTOFF_HA:
break;
- /* This refers only to functions defined in the shared library */
+ /* This refers only to functions defined in the shared library. */
case R_PPC_LOCAL24PC:
break;
else if (h->root.type == bfd_link_hash_undefweak)
relocation = 0;
else if (info->shared
- && (!info->symbolic || info->allow_shlib_undefined)
&& !info->no_undefined
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
relocation = 0;
/* When generating a shared object, these relocations
are copied into the output file to be resolved at run
time. */
-
if (sreloc == NULL)
{
const char *name;
}
break;
- /* branch taken prediction relocations */
+ /* Branch taken prediction relocations. */
case (int) R_PPC_ADDR14_BRTAKEN:
case (int) R_PPC_REL14_BRTAKEN:
insn = bfd_get_32 (output_bfd, contents + offset);
bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
break;
- /* branch not taken predicition relocations */
+ /* Branch not taken predicition relocations. */
case (int) R_PPC_ADDR14_BRNTAKEN:
case (int) R_PPC_REL14_BRNTAKEN:
insn = bfd_get_32 (output_bfd, contents + offset);
bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
break;
- /* GOT16 relocations */
+ /* GOT16 relocations. */
case (int) R_PPC_GOT16:
case (int) R_PPC_GOT16_LO:
case (int) R_PPC_GOT16_HI:
addend += ((relocation + addend) & 0x8000) << 1;
break;
- /* Indirect .sdata relocation */
+ /* Indirect .sdata relocation. */
case (int) R_PPC_EMB_SDAI16:
BFD_ASSERT (sdata != NULL);
relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
R_PPC_RELATIVE);
break;
- /* Indirect .sdata2 relocation */
+ /* Indirect .sdata2 relocation. */
case (int) R_PPC_EMB_SDA2I16:
BFD_ASSERT (sdata2 != NULL);
relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
+ h->plt.offset);
break;
- /* relocate against _SDA_BASE_ */
+ /* Relocate against _SDA_BASE_. */
case (int) R_PPC_SDAREL16:
{
const char *name;
}
break;
- /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
+ /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
case (int) R_PPC_EMB_SDA21:
case (int) R_PPC_EMB_RELSDA:
{
}
break;
- /* Relocate against the beginning of the section */
+ /* Relocate against the beginning of the section. */
case (int) R_PPC_SECTOFF:
case (int) R_PPC_SECTOFF_LO:
case (int) R_PPC_SECTOFF_HI:
}
}
\f
-/* Support for core dump NOTE sections */
+/* Support for core dump NOTE sections. */
+
static bfd_boolean
ppc_elf_grok_prstatus (abfd, note)
bfd *abfd;
default:
return FALSE;
- case 268: /* Linux/PPC */
+ case 268: /* Linux/PPC. */
/* pr_cursig */
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
default:
return FALSE;
- case 128: /* Linux/PPC elf_prpsinfo */
+ case 128: /* Linux/PPC elf_prpsinfo. */
elf_tdata (abfd)->core_program
= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
elf_tdata (abfd)->core_command
projects / deliverable / binutils-gdb.git / blobdiff