/* Machine-dependent ELF dynamic relocation inline functions. SH version.
- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004
- Free Software Foundation, Inc.
+ Copyright (C) 1999-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
#ifndef dl_machine_h
#define dl_machine_h
-/* Only dummy. This doesn't work. */
-
#define ELF_MACHINE_NAME "SH"
#include <sys/param.h>
-
+#include <sysdep.h>
#include <assert.h>
+#include <dl-static-tls.h>
+#include <dl-machine-rel.h>
/* Return nonzero iff ELF header is compatible with the running host. */
static inline int __attribute__ ((unused))
/* Set up the loaded object described by L so its unrelocated PLT
entries will jump to the on-demand fixup code in dl-runtime.c. */
-static inline int __attribute__ ((unused))
-elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+static inline int __attribute__ ((unused, always_inline))
+elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
+ int lazy, int profile)
{
Elf32_Addr *got;
extern void _dl_runtime_resolve (Elf32_Word);
to intercept the calls to collect information. In this case we
don't store the address in the GOT so that all future calls also
end in this function. */
+#ifdef SHARED
if (profile)
{
got[2] = (Elf32_Addr) &_dl_runtime_profile;
/* Say that we really want profiling and the timers are started. */
- GL(dl_profile_map) = l;
+ if (GLRO(dl_profile) != NULL
+ && _dl_name_match_p (GLRO(dl_profile), l))
+ GL(dl_profile_map) = l;
}
else
+#endif
/* This function will get called to fix up the GOT entry indicated by
the offset on the stack, and then jump to the resolved address. */
got[2] = (Elf32_Addr) &_dl_runtime_resolve;
return lazy;
}
-/* This code is used in dl-runtime.c to call the `fixup' function
- and then redirect to the address it returns. */
-
#define ELF_MACHINE_RUNTIME_FIXUP_ARGS int plt_type
-
-#ifdef SHARED
-#define FUN_ADDR "\
- 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
-#define FUN_ADDR "\
- mov.l 3f,r0"
-#define GOTJMP(x) #x
-#endif
-
-#ifdef HAVE_FPU
-#define FGR_SAVE "\
- 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\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 ""
-#define FGR_LOAD ""
-#endif
-
-#ifndef PROF
-# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
- .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\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
+#define ELF_MACHINE_RUNTIME_FIXUP_PARAMS plt_type
/* Mask identifying addresses reserved for the user program,
where the dynamic linker should not map anything. */
add r0,r12\n\
.align 2\n\
1: .long _GLOBAL_OFFSET_TABLE_\n\
-2: ! See if we were run as a command with the executable file\n\
- ! name as an extra leading argument.\n\
- mov.l .L_dl_skip_args,r0\n\
- mov.l @(r0,r12),r0\n\
- mov.l @r0,r0\n\
- ! Get the original argument count.\n\
+2: ! Get the original argument count.\n\
mov.l @r15,r5\n\
- ! Subtract _dl_skip_args from it.\n\
- sub r0,r5\n\
- ! Adjust the stack pointer to skip _dl_skip_args words.\n\
- shll2 r0\n\
- add r0,r15\n\
- ! Store back the modified argument count.\n\
- mov.l r5,@r15\n\
! Compute argv address and envp.\n\
mov r15,r6\n\
add #4,r6\n\
mov r5,r7\n\
shll2 r7\n\
add r15,r7\n\
+ add #8,r7\n\
mov.l .L_dl_loaded,r0\n\
mov.l @(r0,r12),r0\n\
mov.l @r0,r4\n\
add r1,r0\n\
jsr @r0\n\
nop\n\
-1: ! Clear the startup flag.\n\
- mov.l .L_dl_starting_up,r0\n\
- mov.l @(r0,r12),r0\n\
- mov #0,r2\n\
- mov.l r2,@r0\n\
- ! Pass our finalizer function to the user in r4, as per ELF ABI.\n\
+1: ! Pass our finalizer function to the user in r4, as per ELF ABI.\n\
mov.l .L_dl_fini,r0\n\
mov.l @(r0,r12),r4\n\
! Jump to the user's entry point.\n\
.align 2\n\
.L_dl_start:\n\
.long _dl_start@PLT\n\
-.L_dl_skip_args:\n\
- .long _dl_skip_args@GOT\n\
.L_dl_init:\n\
- .long _dl_init_internal@PLT\n\
+ .long _dl_init@PLT\n\
.L_dl_loaded:\n\
.long _rtld_local@GOT\n\
-.L_dl_starting_up:\n\
- .long _dl_starting_up@GOT\n\
.L_dl_fini:\n\
.long _dl_fini@GOT\n\
+ .type __fpscr_values,@object\n\
+ .global __fpscr_values\n\
+__fpscr_values:\n\
+ .long 0\n\
+ .long 0x80000\n\
+ .weak __fpscr_values\n\
.previous\n\
");
/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry or
TLS variable, so undefined references should not be allowed to
define the value.
- ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
+ ELF_RTYPE_CLASS_COPY iff TYPE should not be allowed to resolve to one
of the main executable's symbols, as for a COPY reloc. */
-#if defined USE_TLS && (!defined RTLD_BOOTSTRAP || USE___THREAD)
-# define elf_machine_type_class(type) \
+#define elf_machine_type_class(type) \
((((type) == R_SH_JMP_SLOT || (type) == R_SH_TLS_DTPMOD32 \
|| (type) == R_SH_TLS_DTPOFF32 || (type) == R_SH_TLS_TPOFF32) \
* ELF_RTYPE_CLASS_PLT) \
| (((type) == R_SH_COPY) * ELF_RTYPE_CLASS_COPY))
-#else
-#define elf_machine_type_class(type) \
- ((((type) == R_SH_JMP_SLOT) * ELF_RTYPE_CLASS_PLT) \
- | (((type) == R_SH_COPY) * ELF_RTYPE_CLASS_COPY))
-#endif
/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
#define ELF_MACHINE_JMP_SLOT R_SH_JMP_SLOT
static inline Elf32_Addr
elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+ const ElfW(Sym) *refsym, const ElfW(Sym) *sym,
const Elf32_Rela *reloc,
Elf32_Addr *reloc_addr, Elf32_Addr value)
{
return value + reloc->r_addend;
}
-#endif /* !dl_machine_h */
+#define ARCH_LA_PLTENTER sh_gnu_pltenter
+#define ARCH_LA_PLTEXIT sh_gnu_pltexit
-#ifdef RESOLVE
+#endif /* !dl_machine_h */
-/* SH never uses Elf32_Rel relocations. */
-#define ELF_MACHINE_NO_REL 1
+#ifdef RESOLVE_MAP
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
static inline void
-elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
- const Elf32_Sym *sym, const struct r_found_version *version,
- void *const reloc_addr_arg)
+__attribute ((always_inline))
+elf_machine_rela (struct link_map *map, struct r_scope_elem *scope[],
+ const Elf32_Rela *reloc, const Elf32_Sym *sym,
+ const struct r_found_version *version,
+ void *const reloc_addr_arg, int skip_ifunc)
{
Elf32_Addr *const reloc_addr = reloc_addr_arg;
const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
} \
}
- if (__builtin_expect (r_type == R_SH_RELATIVE, 0))
+ if (__glibc_unlikely (r_type == R_SH_RELATIVE))
{
#ifndef RTLD_BOOTSTRAP
if (map != &GL(dl_rtld_map)) /* Already done in rtld itself. */
}
}
#ifndef RTLD_BOOTSTRAP
- else if (__builtin_expect (r_type == R_SH_NONE, 0))
+ else if (__glibc_unlikely (r_type == R_SH_NONE))
return;
#endif
else
{
const Elf32_Sym *const refsym = sym;
-#if defined USE_TLS && !defined RTLD_BOOTSTRAP
- struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
-
- value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
-#else
+ struct link_map *sym_map = RESOLVE_MAP (map, scope, &sym, version,
+ r_type);
- value = RESOLVE (&sym, version, r_type);
-# ifndef RTLD_BOOTSTRAP
- if (sym != NULL)
-# endif
- value += sym->st_value;
-#endif
+ value = SYMBOL_ADDRESS (sym_map, sym, true);
value += reloc->r_addend;
switch (r_type)
strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]);
_dl_error_printf ("\
%s: Symbol `%s' has different size in shared object, consider re-linking\n",
- rtld_progname ?: "<program name unknown>",
- strtab + refsym->st_name);
+ RTLD_PROGNAME, strtab + refsym->st_name);
}
memcpy (reloc_addr_arg, (void *) value,
MIN (sym->st_size, refsym->st_size));
/* These addresses are always aligned. */
*reloc_addr = value;
break;
-#if defined USE_TLS && (!defined RTLD_BOOTSTRAP || USE___THREAD)
/* XXX Remove TLS relocations which are not needed. */
case R_SH_TLS_DTPMOD32:
-# ifdef RTLD_BOOTSTRAP
+#ifdef RTLD_BOOTSTRAP
/* During startup the dynamic linker is always the module
with index 1.
XXX If this relocation is necessary move before RESOLVE
call. */
*reloc_addr = 1;
-# else
+#else
/* Get the information from the link map returned by the
resolv function. */
if (sym_map != NULL)
*reloc_addr = sym_map->l_tls_modid;
-# endif
+#endif
break;
case R_SH_TLS_DTPOFF32:
-# ifndef RTLD_BOOTSTRAP
+#ifndef RTLD_BOOTSTRAP
/* During relocation all TLS symbols are defined and used.
Therefore the offset is already correct. */
if (sym != NULL)
*reloc_addr = sym->st_value;
-# endif
+#endif
break;
case R_SH_TLS_TPOFF32:
/* The offset is positive, afterward from the thread pointer. */
-# ifdef RTLD_BOOTSTRAP
+#ifdef RTLD_BOOTSTRAP
*reloc_addr = map->l_tls_offset + sym->st_value + reloc->r_addend;
-# else
+#else
/* We know the offset of object the symbol is contained in.
It is a positive value which will be added to the thread
pointer. To get the variable position in the TLS block
*reloc_addr = sym_map->l_tls_offset + sym->st_value
+ reloc->r_addend;
}
-# endif
+#endif
break;
-#endif /* use TLS */
case R_SH_DIR32:
{
-#ifndef RTLD_BOOTSTRAP
+#if !defined RTLD_BOOTSTRAP
/* This is defined in rtld.c, but nowhere in the static
libc.a; make the reference weak so static programs can
still link. This declaration cannot be done when
binding found in the user program or a loaded library
rather than the dynamic linker's built-in definitions
used while loading those libraries. */
- value -= map->l_addr + refsym->st_value + reloc->r_addend;
+ value -= SYMBOL_ADDRESS (map, refsym, true) + reloc->r_addend;
#endif
COPY_UNALIGNED_WORD (&value, reloc_addr_arg,
(int) reloc_addr_arg & 3);
}
static inline void
+__attribute__ ((always_inline))
elf_machine_rela_relative (Elf32_Addr l_addr, const Elf32_Rela *reloc,
void *const reloc_addr_arg)
{
- Elf32_Addr *const reloc_addr = reloc_addr_arg;
Elf32_Addr value;
if (reloc->r_addend)
}
static inline void
-elf_machine_lazy_rel (struct link_map *map,
- Elf32_Addr l_addr, const Elf32_Rela *reloc)
+__attribute__ ((always_inline))
+elf_machine_lazy_rel (struct link_map *map, struct r_scope_elem *scope[],
+ Elf32_Addr l_addr, const Elf32_Rela *reloc,
+ int skip_ifunc)
{
Elf32_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
/* Check for unexpected PLT reloc type. */
_dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 1);
}
-#endif /* RESOLVE */
+#endif /* RESOLVE_MAP */
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