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Diffstat (limited to 'sysdeps/sh/dl-machine.h')
-rw-r--r--sysdeps/sh/dl-machine.h374
1 files changed, 203 insertions, 171 deletions
diff --git a/sysdeps/sh/dl-machine.h b/sysdeps/sh/dl-machine.h
index 73e9a10c05..2a740b1c13 100644
--- a/sysdeps/sh/dl-machine.h
+++ b/sysdeps/sh/dl-machine.h
@@ -53,15 +53,15 @@ static inline Elf32_Addr __attribute__ ((unused))
elf_machine_load_address (void)
{
Elf32_Addr addr;
- asm ("mov.l .L1,r0
- mov.l .L3,r2
- add r12,r2
- mov.l @(r0,r12),r0
- bra .L2
- sub r0,r2
- .align 2
- .L1: .long _dl_start@GOT
- .L3: .long _dl_start@GOTOFF
+ asm ("mov.l .L1,r0\n\
+ mov.l .L3,r2\n\
+ add r12,r2\n\
+ mov.l @(r0,r12),r0\n\
+ bra .L2\n\
+ sub r0,r2\n\
+ .align 2\n\
+ .L1: .long _dl_start@GOT\n\
+ .L3: .long _dl_start@GOTOFF\n\
.L2: mov r2,%0"
: "=r" (addr) : : "r0", "r1", "r2");
return addr;
@@ -114,13 +114,13 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
#ifdef SHARED
#define FUN_ADDR "\
- mov.l 1f,r2
- mova 1f,r0
- bra 2f
- add r0,r2 ! Get GOT address in r2
-0: .align 2
-1: .long _GLOBAL_OFFSET_TABLE_
-2: mov.l 3f,r0
+ mov.l 1f,r2\n\
+ mova 1f,r0\n\
+ bra 2f\n\
+ add r0,r2 ! Get GOT address in r2\n\
+0: .align 2\n\
+1: .long _GLOBAL_OFFSET_TABLE_\n\
+2: mov.l 3f,r0\n\
add r2,r0"
#define GOTJMP(x) #x "@GOTOFF"
#else
@@ -131,27 +131,27 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
#ifdef HAVE_FPU
#define FGR_SAVE "\
- sts.l fpscr, @-r15
- mov #8,r3
- swap.w r3, r3
- lds r3, fpscr
- fmov.s fr11, @-r15
- fmov.s fr10, @-r15
- fmov.s fr9, @-r15
- fmov.s fr8, @-r15
- fmov.s fr7, @-r15
- fmov.s fr6, @-r15
- fmov.s fr5, @-r15
+ sts.l fpscr, @-r15\n\
+ mov #8,r3\n\
+ swap.w r3, r3\n\
+ lds r3, fpscr\n\
+ fmov.s fr11, @-r15\n\
+ fmov.s fr10, @-r15\n\
+ fmov.s fr9, @-r15\n\
+ fmov.s fr8, @-r15\n\
+ fmov.s fr7, @-r15\n\
+ fmov.s fr6, @-r15\n\
+ fmov.s fr5, @-r15\n\
fmov.s fr4, @-r15"
#define FGR_LOAD "\
- fmov.s @r15+, fr4
- fmov.s @r15+, fr5
- fmov.s @r15+, fr6
- fmov.s @r15+, fr7
- fmov.s @r15+, fr8
- fmov.s @r15+, fr9
- fmov.s @r15+, fr10
- fmov.s @r15+, fr11
+ fmov.s @r15+, fr4\n\
+ fmov.s @r15+, fr5\n\
+ fmov.s @r15+, fr6\n\
+ fmov.s @r15+, fr7\n\
+ fmov.s @r15+, fr8\n\
+ fmov.s @r15+, fr9\n\
+ fmov.s @r15+, fr10\n\
+ fmov.s @r15+, fr11\n\
lds.l @r15+, fpscr"
#else
#define FGR_SAVE ""
@@ -160,140 +160,140 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
#ifndef PROF
# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
- .text
- .globl _dl_runtime_resolve
- .type _dl_runtime_resolve, @function
- .align 5
-_dl_runtime_resolve:
- mov.l r2,@-r15
- mov.l r3,@-r15
- mov.l r4,@-r15
- mov.l r5,@-r15
- mov.l r6,@-r15
- mov.l r7,@-r15
- mov.l r12,@-r15
- movt r3 ! Save T flag.
- mov.l r3,@-r15
- " FGR_SAVE "
- sts.l pr,@-r15
- tst r0,r0
- bt 1f
- mov r0,r2
-1:
- mov r0,r4 ! PLT type
- mov r2,r5 ! link map address
- " FUN_ADDR "
- jsr @r0 ! Call resolver.
- mov r1,r6 ! reloc offset
- lds.l @r15+,pr ! Get register content back.
- " FGR_LOAD "
- mov.l @r15+,r3
- shal r3 ! Lode T flag.
- mov.l @r15+,r12
- mov.l @r15+,r7
- mov.l @r15+,r6
- mov.l @r15+,r5
- mov.l @r15+,r4
- mov.l @r15+,r3
- jmp @r0 ! Jump to function address.
- mov.l @r15+,r2
- .align 2
-3:
- .long " GOTJMP (fixup) "
- .size _dl_runtime_resolve, .-_dl_runtime_resolve
-
- .globl _dl_runtime_profile
- .type _dl_runtime_profile, @function
- .align 5
-_dl_runtime_profile:
- mov.l r2,@-r15
- mov.l r3,@-r15
- mov.l r4,@-r15
- mov.l r5,@-r15
- mov.l r6,@-r15
- mov.l r7,@-r15
- mov.l r12,@-r15
- movt r3 ! Save T flag.
- mov.l r3,@-r15
- " FGR_SAVE "
- sts.l pr,@-r15
- tst r0,r0
- bt 1f
- mov r0,r2
-1:
- mov r0,r4 ! PLT type
- mov r2,r5 ! link map address
- sts pr,r7 ! return address
- " FUN_ADDR "
- jsr @r0 ! Call resolver.
- mov r1,r6 ! reloc offset
- lds.l @r15+,pr ! Get register content back.
- " FGR_LOAD "
- mov.l @r15+,r3
- shal r3 ! Lode T flag.
- mov.l @r15+,r12
- mov.l @r15+,r7
- mov.l @r15+,r6
- mov.l @r15+,r5
- mov.l @r15+,r4
- mov.l @r15+,r3
- jmp @r0 ! Jump to function address.
- mov.l @r15+,r2
- .align 2
-3:
- .long " GOTJMP (profile_fixup) "
- .size _dl_runtime_profile, .-_dl_runtime_profile
- .previous
+ .text\n\
+ .globl _dl_runtime_resolve\n\
+ .type _dl_runtime_resolve, @function\n\
+ .align 5\n\
+_dl_runtime_resolve:\n\
+ mov.l r2,@-r15\n\
+ mov.l r3,@-r15\n\
+ mov.l r4,@-r15\n\
+ mov.l r5,@-r15\n\
+ mov.l r6,@-r15\n\
+ mov.l r7,@-r15\n\
+ mov.l r12,@-r15\n\
+ movt r3 ! Save T flag.\n\
+ mov.l r3,@-r15\n\
+ " FGR_SAVE "\n\
+ sts.l pr,@-r15\n\
+ tst r0,r0\n\
+ bt 1f\n\
+ mov r0,r2\n\
+1:\n\
+ mov r0,r4 ! PLT type\n\
+ mov r2,r5 ! link map address\n\
+ " FUN_ADDR "\n\
+ jsr @r0 ! Call resolver.\n\
+ mov r1,r6 ! reloc offset\n\
+ lds.l @r15+,pr ! Get register content back.\n\
+ " FGR_LOAD "\n\
+ mov.l @r15+,r3\n\
+ shal r3 ! Lode T flag.\n\
+ mov.l @r15+,r12\n\
+ mov.l @r15+,r7\n\
+ mov.l @r15+,r6\n\
+ mov.l @r15+,r5\n\
+ mov.l @r15+,r4\n\
+ mov.l @r15+,r3\n\
+ jmp @r0 ! Jump to function address.\n\
+ mov.l @r15+,r2\n\
+ .align 2\n\
+3:\n\
+ .long " GOTJMP (fixup) "\n\
+ .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
+\n\
+ .globl _dl_runtime_profile\n\
+ .type _dl_runtime_profile, @function\n\
+ .align 5\n\
+_dl_runtime_profile:\n\
+ mov.l r2,@-r15\n\
+ mov.l r3,@-r15\n\
+ mov.l r4,@-r15\n\
+ mov.l r5,@-r15\n\
+ mov.l r6,@-r15\n\
+ mov.l r7,@-r15\n\
+ mov.l r12,@-r15\n\
+ movt r3 ! Save T flag.\n\
+ mov.l r3,@-r15\n\
+ " FGR_SAVE "\n\
+ sts.l pr,@-r15\n\
+ tst r0,r0\n\
+ bt 1f\n\
+ mov r0,r2\n\
+1:\n\
+ mov r0,r4 ! PLT type\n\
+ mov r2,r5 ! link map address\n\
+ sts pr,r7 ! return address\n\
+ " FUN_ADDR "\n\
+ jsr @r0 ! Call resolver.\n\
+ mov r1,r6 ! reloc offset\n\
+ lds.l @r15+,pr ! Get register content back.\n\
+ " FGR_LOAD "\n\
+ mov.l @r15+,r3\n\
+ shal r3 ! Lode T flag.\n\
+ mov.l @r15+,r12\n\
+ mov.l @r15+,r7\n\
+ mov.l @r15+,r6\n\
+ mov.l @r15+,r5\n\
+ mov.l @r15+,r4\n\
+ mov.l @r15+,r3\n\
+ jmp @r0 ! Jump to function address.\n\
+ mov.l @r15+,r2\n\
+ .align 2\n\
+3:\n\
+ .long " GOTJMP (profile_fixup) "\n\
+ .size _dl_runtime_profile, .-_dl_runtime_profile\n\
+ .previous\n\
");
#else
# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
- .text
- .globl _dl_runtime_resolve
- .globl _dl_runtime_profile
- .type _dl_runtime_resolve, @function
- .type _dl_runtime_profile, @function
- .align 5
-_dl_runtime_resolve:
-_dl_runtime_profile:
- mov.l r2,@-r15
- mov.l r3,@-r15
- mov.l r4,@-r15
- mov.l r5,@-r15
- mov.l r6,@-r15
- mov.l r7,@-r15
- mov.l r12,@-r15
- movt r3 ! Save T flag.
- mov.l r3,@-r15
- " FGR_SAVE "
- sts.l pr,@-r15
- tst r0,r0
- bt 1f
- mov r0,r2
-1:
- mov r0,r4 ! PLT type
- mov r2,r5 ! link map address
- sts pr,r7 ! return address
- " FUN_ADDR "
- jsr @r0 ! Call resolver.
- mov r1,r6 ! reloc offset
- lds.l @r15+,pr ! Get register content back.
- " FGR_LOAD "
- mov.l @r15+,r3
- shal r3 ! Lode T flag.
- mov.l @r15+,r12
- mov.l @r15+,r7
- mov.l @r15+,r6
- mov.l @r15+,r5
- mov.l @r15+,r4
- mov.l @r15+,r3
- jmp @r0 ! Jump to function address.
- mov.l @r15+,r2
- .align 2
-3:
- .long " GOTJMP (fixup) "
- .size _dl_runtime_resolve, .-_dl_runtime_resolve
- .size _dl_runtime_profile, .-_dl_runtime_profile
- .previous
+ .text\n\
+ .globl _dl_runtime_resolve\n\
+ .globl _dl_runtime_profile\n\
+ .type _dl_runtime_resolve, @function\n\
+ .type _dl_runtime_profile, @function\n\
+ .align 5\n\
+_dl_runtime_resolve:\n\
+_dl_runtime_profile:\n\
+ mov.l r2,@-r15\n\
+ mov.l r3,@-r15\n\
+ mov.l r4,@-r15\n\
+ mov.l r5,@-r15\n\
+ mov.l r6,@-r15\n\
+ mov.l r7,@-r15\n\
+ mov.l r12,@-r15\n\
+ movt r3 ! Save T flag.\n\
+ mov.l r3,@-r15\n\
+ " FGR_SAVE "\n\
+ sts.l pr,@-r15\n\
+ tst r0,r0\n\
+ bt 1f\n\
+ mov r0,r2\n\
+1:\n\
+ mov r0,r4 ! PLT type\n\
+ mov r2,r5 ! link map address\n\
+ sts pr,r7 ! return address\n\
+ " FUN_ADDR "\n\
+ jsr @r0 ! Call resolver.\n\
+ mov r1,r6 ! reloc offset\n\
+ lds.l @r15+,pr ! Get register content back.\n\
+ " FGR_LOAD "\n\
+ mov.l @r15+,r3\n\
+ shal r3 ! Lode T flag.\n\
+ mov.l @r15+,r12\n\
+ mov.l @r15+,r7\n\
+ mov.l @r15+,r6\n\
+ mov.l @r15+,r5\n\
+ mov.l @r15+,r4\n\
+ mov.l @r15+,r3\n\
+ jmp @r0 ! Jump to function address.\n\
+ mov.l @r15+,r2\n\
+ .align 2\n\
+3:\n\
+ .long " GOTJMP (fixup) "\n\
+ .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
+ .size _dl_runtime_profile, .-_dl_runtime_profile\n\
+ .previous\n\
");
#endif
@@ -446,6 +446,29 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
const Elf32_Sym *sym, const struct r_found_version *version,
Elf32_Addr *const reloc_addr)
{
+ Elf32_Addr value;
+
+#define COPY_UNALIGNED_WORD(sw, tw, align) \
+ { \
+ void *__s = &(sw), *__t = &(tw); \
+ switch ((align)) \
+ { \
+ case 0: \
+ *(unsigned long *) __t = *(unsigned long *) __s; \
+ break; \
+ case 2: \
+ *((unsigned short *) __t)++ = *((unsigned short *) __s)++; \
+ *((unsigned short *) __t) = *((unsigned short *) __s); \
+ break; \
+ default: \
+ *((unsigned char *) __t)++ = *((unsigned char *) __s)++; \
+ *((unsigned char *) __t)++ = *((unsigned char *) __s)++; \
+ *((unsigned char *) __t)++ = *((unsigned char *) __s)++; \
+ *((unsigned char *) __t) = *((unsigned char *) __s); \
+ break; \
+ } \
+ }
+
if (ELF32_R_TYPE (reloc->r_info) == R_SH_RELATIVE)
{
#ifndef RTLD_BOOTSTRAP
@@ -453,15 +476,20 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
#endif
{
if (reloc->r_addend)
- *reloc_addr = map->l_addr + reloc->r_addend;
+ value = map->l_addr + reloc->r_addend;
else
- *reloc_addr += map->l_addr;
+ {
+ COPY_UNALIGNED_WORD (*reloc_addr, value, (int) reloc_addr & 3);
+ value += map->l_addr;
+ }
+ COPY_UNALIGNED_WORD (value, *reloc_addr, (int) reloc_addr & 3);
}
}
else if (ELF32_R_TYPE (reloc->r_info) != R_SH_NONE)
{
const Elf32_Sym *const refsym = sym;
- Elf32_Addr value = RESOLVE (&sym, version, ELF32_R_TYPE (reloc->r_info));
+
+ value = RESOLVE (&sym, version, ELF32_R_TYPE (reloc->r_info));
if (sym)
value += sym->st_value;
value += reloc->r_addend;
@@ -489,6 +517,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
break;
case R_SH_GLOB_DAT:
case R_SH_JMP_SLOT:
+ /* These addresses are always aligned. */
*reloc_addr = value;
break;
case R_SH_DIR32:
@@ -509,17 +538,20 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
used while loading those libraries. */
value -= map->l_addr + refsym->st_value + reloc->r_addend;
#endif
- *reloc_addr = value;
+ COPY_UNALIGNED_WORD (value, *reloc_addr, (int) reloc_addr & 3);
break;
}
case R_SH_REL32:
- *reloc_addr = (value - (Elf32_Addr) reloc_addr);
+ value = (value - (Elf32_Addr) reloc_addr);
+ COPY_UNALIGNED_WORD (value, *reloc_addr, (int) reloc_addr & 3);
break;
default:
_dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 0);
break;
}
}
+
+#undef COPY_UNALIGNED_WORD
}
static inline void
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 06:30:06 +0000