/* PLT trampoline. MIPS version.
- Copyright (C) 1996-2001, 2002, 2003, 2004, 2005
- Free Software Foundation, Inc.
+ Copyright (C) 1996-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Kazumoto Kojima <kkojima@info.kanagawa-u.ac.jp>.
generated by the gnu linker. */
int _dl_mips_gnu_objects = 1;
-#define VERSYMIDX(sym) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGIDX (sym))
-
/* This is called from assembly stubs below which the compiler can't see. */
static ElfW(Addr)
__dl_runtime_resolve (ElfW(Word), ElfW(Word), ElfW(Addr), ElfW(Addr))
/* FIXME: The symbol versioning stuff is not tested yet. */
if (__builtin_expect (ELFW(ST_VISIBILITY) (sym->st_other), 0) == 0)
{
- switch (l->l_info[VERSYMIDX (DT_VERSYM)] != NULL)
+ switch (l->l_info[VERSYMIDX (DT_VERSYM)] != NULL ? 1 : 0)
{
default:
{
/* Currently value contains the base load address of the object
that defines sym. Now add in the symbol offset. */
- value = (sym ? sym_map->l_addr + sym->st_value : 0);
+ value = SYMBOL_ADDRESS (sym_map, sym, true);
}
else
/* We already found the symbol. The module (and therefore its load
address) is also known. */
- value = l->l_addr + sym->st_value;
+ value = SYMBOL_ADDRESS (l, sym, true);
/* Apply the relocation with that value. */
*(got + local_gotno + sym_index - gotsym) = value;
#endif
+#ifndef __mips16
asm ("\n\
.text\n\
.align 2\n\
+ .set nomips16\n\
.globl _dl_runtime_resolve\n\
.type _dl_runtime_resolve,@function\n\
.ent _dl_runtime_resolve\n\
asm ("\n\
.text\n\
.align 2\n\
+ .set nomips16\n\
.globl _dl_runtime_pltresolve\n\
.type _dl_runtime_pltresolve,@function\n\
.ent _dl_runtime_pltresolve\n\
.previous\n\
");
+#elif _MIPS_SIM == _ABIO32 /* __mips16 */
+/* MIPS16 version, O32 only. */
+asm ("\n\
+ .text\n\
+ .align 2\n\
+ .set mips16\n\
+ .globl _dl_runtime_resolve\n\
+ .type _dl_runtime_resolve,@function\n\
+ .ent _dl_runtime_resolve\n\
+_dl_runtime_resolve:\n\
+ .frame $29, " STRINGXP (ELF_DL_FRAME_SIZE) ", $31\n\
+ # Save arguments and sp value in stack.\n\t"
+# if _MIPS_ISA >= _MIPS_ISA_MIPS32
+ "save " STRINGXP (ELF_DL_FRAME_SIZE) ", $4-$7, $ra\n\t"
+# else
+ "addiu $sp, -" STRINGXP (ELF_DL_FRAME_SIZE) "\n\
+ sw $7, 32($sp)\n\
+ sw $6, 28($sp)\n\
+ sw $5, 24($sp)\n\
+ sw $4, 20($sp)\n\t"
+# endif
+ "# Preserve caller's $ra, for RESTORE instruction below.\n\
+ move $5, $15\n\
+ sw $5, 36($sp)\n\
+ # Compute GP into $2.\n\
+ li $2, %hi(_gp_disp)\n\
+ addiu $3, $pc, %lo(_gp_disp)\n\
+ sll $2, 16\n\
+ addu $2, $3\n\
+ lw $3, %got(__dl_runtime_resolve)($2)\n\
+ move $4, $24\n\
+ addiu $3, %lo(__dl_runtime_resolve)\n\
+ move $7, $ra\n\
+ move $6, $28\n\
+ move $25, $3\n\
+ jalr $3\n\t"
+# if _MIPS_ISA >= _MIPS_ISA_MIPS32
+ "restore " STRINGXP(ELF_DL_FRAME_SIZE) ", $4-$7, $ra\n\t"
+# else
+ "# Restore $ra, move placed further down to hide latency.\n\
+ lw $4, 36($sp)\n\
+ lw $5, 24($sp)\n\
+ lw $6, 28($sp)\n\
+ lw $7, 32($sp)\n\
+ move $ra, $4\n\
+ lw $4, 20($sp)\n\
+ addiu $sp, " STRINGXP(ELF_DL_FRAME_SIZE) "\n\t"
+# endif
+ "move $25, $2\n\
+ jr $2\n\
+ .end _dl_runtime_resolve\n\
+ .previous\n\
+");
+
+asm ("\n\
+ .text\n\
+ .align 2\n\
+ .set mips16\n\
+ .globl _dl_runtime_pltresolve\n\
+ .type _dl_runtime_pltresolve,@function\n\
+ .ent _dl_runtime_pltresolve\n\
+_dl_runtime_pltresolve:\n\
+ .frame $29, " STRINGXP(ELF_DL_PLT_FRAME_SIZE) ", $31\n\
+ # Save arguments and sp value in stack.\n\t"
+# if _MIPS_ISA >= _MIPS_ISA_MIPS32
+ "save " STRINGXP(ELF_DL_PLT_FRAME_SIZE) ", $4-$7, $ra\n\t"
+# else
+ "addiu $sp, -" STRINGXP(ELF_DL_PLT_FRAME_SIZE) "\n\
+ sw $7, 40($sp)\n\
+ sw $6, 36($sp)\n\
+ sw $5, 32($sp)\n\
+ sw $4, 28($sp)\n\t"
+# endif
+ "# Preserve MIPS16 stub function arguments.\n\
+ sw $3, 20($sp)\n\
+ sw $2, 16($sp)\n\
+ # Preserve caller's $ra, for RESTORE instruction below.\n\
+ move $3, $15\n\
+ sw $3, 44($sp)\n\
+ # Compute GP into $2.\n\
+ li $2, %hi(_gp_disp)\n\
+ addiu $3, $pc, %lo(_gp_disp)\n\
+ sll $2, 16\n\
+ addu $2, $3\n\
+ # Save GP value in slot.\n\
+ sw $2, 24($sp)\n\
+ # Load _dl_fixup address.\n\
+ lw $6, %call16(_dl_fixup)($2)\n\
+ # Load link map address.\n\
+ move $3, $28\n\
+ lw $4, " STRINGXP (PTRSIZE) "($3)\n\
+ move $5, $24\n\
+ sll $5, " STRINGXP (PTRLOG) " + 1\n\
+ # Call _dl_fixup.\n\
+ move $25, $6\n\
+ jalr $6\n\
+ move $25, $2\n\
+ # Reload GP value into $28.\n\
+ lw $3, 24($sp)\n\
+ move $28, $3\n\
+ lw $3, 16($sp)\n\
+ move $15, $3\n\
+ lw $3, 20($sp)\n\t"
+# if _MIPS_ISA >= _MIPS_ISA_MIPS32
+ "restore " STRINGXP (ELF_DL_PLT_FRAME_SIZE) ", $4-$7, $ra\n\t"
+# else
+ "# Restore $ra, move placed further down to hide latency.\n\
+ lw $4, 44($sp)\n\
+ lw $5, 32($sp)\n\
+ lw $6, 36($sp)\n\
+ lw $7, 40($sp)\n\
+ move $ra, $4\n\
+ lw $4, 28($sp)\n\
+ addiu $sp, " STRINGXP (ELF_DL_PLT_FRAME_SIZE) "\n\t"
+# endif
+ ".set noreorder\n\
+ jr $2\n\
+ move $2, $15\n\
+ .set reorder\n\
+ .end _dl_runtime_pltresolve\n\
+ .previous\n\
+");
+
+#else /* __mips16 && _MIPS_SIM != _ABIO32 */
+# error "MIPS16 support for N32/N64 not implemented"
+
+#endif /* __mips16 */
projects / thirdparty / glibc.git / blobdiff