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-rw-r--r--sysdeps/sparc/sparc32/dl-machine.h44
-rw-r--r--sysdeps/sparc/sparc64/dl-machine.h44
2 files changed, 46 insertions, 42 deletions
diff --git a/sysdeps/sparc/sparc32/dl-machine.h b/sysdeps/sparc/sparc32/dl-machine.h
index b80c126487..288a140245 100644
--- a/sysdeps/sparc/sparc32/dl-machine.h
+++ b/sysdeps/sparc/sparc32/dl-machine.h
@@ -126,13 +126,6 @@ _dl_runtime_resolve:
restore
.size _dl_runtime_resolve, . - _dl_runtime_resolve");
-/* The address of the JMP_SLOT reloc is the .plt entry, thus we don't
- dereference the reloc's addr to get the final destination. Ideally
- there would be a generic way to return the value of the symbol from
- elf_machine_relplt, but as it is, the address of the .plt entry is
- good enough. */
-#define ELF_FIXUP_RETURN_VALUE(map, result) ((Elf32_Addr) &(result))
-
/* Nonzero iff TYPE should not be allowed to resolve to one of
the main executable's symbols, as for a COPY reloc. */
#define elf_machine_lookup_noexec_p(type) ((type) == R_SPARC_COPY)
@@ -142,7 +135,7 @@ _dl_runtime_resolve:
#define elf_machine_lookup_noplt_p(type) ((type) == R_SPARC_JMP_SLOT)
/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
-#define ELF_MACHINE_RELOC_NOPLT R_SPARC_JMP_SLOT
+#define ELF_MACHINE_JMP_SLOT R_SPARC_JMP_SLOT
/* The SPARC never uses Elf32_Rel relocations. */
#define ELF_MACHINE_NO_REL 1
@@ -150,9 +143,6 @@ _dl_runtime_resolve:
/* The SPARC overlaps DT_RELA and DT_PLTREL. */
#define ELF_MACHINE_PLTREL_OVERLAP 1
-/* The PLT uses Elf32_Rela relocs. */
-#define elf_machine_relplt elf_machine_rela
-
/* Initial entry point code for the dynamic linker.
The C function `_dl_start' is the real entry point;
its return value is the user program's entry point. */
@@ -246,7 +236,30 @@ _dl_start_user:
.size _dl_start_user,.-_dl_start_user
.previous");
+static inline void
+elf_machine_fixup_plt (struct link_map *map, const Elf32_Rela *reloc,
+ Elf32_Addr *reloc_addr, Elf32_Addr value)
+{
+ /* For thread safety, write the instructions from the bottom and
+ flush before we overwrite the critical "b,a". This of course
+ need not be done during bootstrapping, since there are no threads.
+ But we also can't tell if we _can_ use flush, so don't. */
+
+ reloc_addr[2] = OPCODE_JMP_G1 | (value & 0x3ff);
+#ifndef RTLD_BOOTSTRAP
+ if (_dl_hwcap & HWCAP_SPARC_FLUSH)
+ __asm __volatile ("flush %0+8" : : "r"(reloc_addr));
+#endif
+
+ reloc_addr[1] = OPCODE_SETHI_G1 | (value >> 10);
+#ifndef RTLD_BOOTSTRAP
+ if (_dl_hwcap & HWCAP_SPARC_FLUSH)
+ __asm __volatile ("flush %0+4" : : "r"(reloc_addr));
+#endif
+}
+
#ifdef RESOLVE
+
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
@@ -305,14 +318,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
*reloc_addr = value;
break;
case R_SPARC_JMP_SLOT:
- /* For thread safety, write the instructions from the bottom and
- flush before we overwrite the critical "b,a". */
- reloc_addr[2] = OPCODE_JMP_G1 | (value & 0x3ff);
- if (_dl_hwcap & HWCAP_SPARC_FLUSH)
- __asm __volatile ("flush %0+8" : : "r"(reloc_addr));
- reloc_addr[1] = OPCODE_SETHI_G1 | (value >> 10);
- if (_dl_hwcap & HWCAP_SPARC_FLUSH)
- __asm __volatile ("flush %0+4" : : "r"(reloc_addr));
+ elf_machine_fixup_plt(map, reloc, reloc_addr, value);
break;
case R_SPARC_8:
*(char *) reloc_addr = value;
diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h
index e302f4a1fe..226623152d 100644
--- a/sysdeps/sparc/sparc64/dl-machine.h
+++ b/sysdeps/sparc/sparc64/dl-machine.h
@@ -67,7 +67,26 @@ elf_machine_load_address (void)
return pc - *(Elf64_Addr *)(elf_pic_register + la);
}
+static inline void
+elf_machine_fixup_plt(struct link_map *map, const Elf64_Rela *reloc,
+ Elf64_Addr *reloc_addr, Elf64_Addr value)
+{
+ Elf64_Dyn *pltfmt = map->l_info[DT_SPARC(PLTFMT)];
+ switch (pltfmt ? pltfmt->d_un.d_val : 0)
+ {
+ case 1: /* .got.plt with absolute addresses */
+ *reloc_addr = value;
+ break;
+ case 2: /* .got.plt with got-relative addresses */
+ *reloc_addr = value - (map->l_info[DT_PLTGOT]->d_un.d_ptr + map->l_addr);
+ break;
+ default:
+ assert (! "unexpected .plt format type");
+ }
+}
+
#ifdef RESOLVE
+
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
@@ -160,21 +179,7 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
break;
case R_SPARC_JMP_SLOT:
- {
- Elf64_Dyn *pltfmt = map->l_info[DT_SPARC(PLTFMT)];
- switch (pltfmt ? pltfmt->d_un.d_val : 0)
- {
- case 1: /* .got.plt with absolute addresses */
- *reloc_addr = value;
- break;
- case 2: /* .got.plt with got-relative addresses */
- *reloc_addr = value - (map->l_info[DT_PLTGOT]->d_un.d_ptr
- + map->l_addr);
- break;
- default:
- assert (! "unexpected .plt format type");
- }
- }
+ elf_machine_fixup_plt(map, reloc, reloc_addr, value);
break;
case R_SPARC_NONE: /* Alright, Wilbur. */
@@ -212,7 +217,7 @@ elf_machine_lazy_rel (struct link_map *map, const Elf64_Rela *reloc)
#define elf_machine_lookup_noplt_p(type) ((type) == R_SPARC_JMP_SLOT)
/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
-#define ELF_MACHINE_RELOC_NOPLT R_SPARC_JMP_SLOT
+#define ELF_MACHINE_JMP_SLOT R_SPARC_JMP_SLOT
/* The SPARC never uses Elf64_Rel relocations. */
#define ELF_MACHINE_NO_REL 1
@@ -220,13 +225,6 @@ elf_machine_lazy_rel (struct link_map *map, const Elf64_Rela *reloc)
/* The SPARC overlaps DT_RELA and DT_PLTREL. */
#define ELF_MACHINE_PLTREL_OVERLAP 1
-/* The return value from dl-runtime's fixup, if it should be special. */
-#define ELF_FIXUP_RETURN_VALUE(map, result) \
- ((map)->l_info[DT_SPARC(PLTFMT)] \
- && (map)->l_info[DT_SPARC(PLTFMT)]->d_un.d_val == 2 \
- ? (result) + (map)->l_info[DT_PLTGOT]->d_un.d_ptr + (map)->l_addr \
- : (result))
-
/* 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. */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 10:16:54 +0000