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authorDavid S. Miller <davem@davemloft.net>2012-02-21 15:42:42 -0800
committerDavid S. Miller <davem@davemloft.net>2012-02-20 17:51:53 -0800
commit3d2b3019e0efa9735370498122ac80298deff8c7 (patch)
tree693771bb0b1fba08098558d99613ce80bc36a923 /sysdeps/sparc/sparc64
parentc80098a9a05b7d5f8ad1488135f2cee613998c50 (diff)
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Use sparc GOTDATA relocations whenever possible.
* sysdeps/sparc/crti.S: Try to use GOTDATA relocs. * sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise. * sysdeps/sparc/sparc32/elf/start.S: Likewise. * sysdeps/sparc/sparc64/dl-machine.h (RTLD_START): Likewise. * sysdeps/sparc/sparc64/elf/start.S: Likewise. * sysdeps/sparc/sparc64/multiarch/memcpy.S: Likewise. * sysdeps/sparc/sparc64/multiarch/memset.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/____longjmp_chk.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h (SYSCALL_ERROR_HANDLER): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/____longjmp_chk.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/brk.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h (SYSCALL_ERROR_HANDLER): Likewise.
Diffstat (limited to 'sysdeps/sparc/sparc64')
-rw-r--r--sysdeps/sparc/sparc64/dl-machine.h32
-rw-r--r--sysdeps/sparc/sparc64/elf/start.S42
-rw-r--r--sysdeps/sparc/sparc64/multiarch/memcpy.S7
-rw-r--r--sysdeps/sparc/sparc64/multiarch/memset.S14
4 files changed, 48 insertions, 47 deletions
diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h
index 5a00c9356e..6bab5ce310 100644
--- a/sysdeps/sparc/sparc64/dl-machine.h
+++ b/sysdeps/sparc/sparc64/dl-machine.h
@@ -264,6 +264,18 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
The C function `_dl_start' is the real entry point;
its return value is the user program's entry point. */
+#ifdef HAVE_BINUTILS_GOTDATA
+#define RTLD_GOT_ADDRESS(pic_reg, reg, symbol) \
+ "sethi %gdop_hix22(" #symbol "), " #reg "\n\t" \
+ "xor " #reg ", %gdop_lox10(" #symbol "), " #reg "\n\t" \
+ "ldx [" #pic_reg " + " #reg "], " #reg ", %gdop(" #symbol ")\n"
+#else
+#define RTLD_GOT_ADDRESS(pic_reg, reg, symbol) \
+ "sethi %hi(" #symbol "), " #reg "\n\t" \
+ "or " #reg ", %lo(" #symbol "), " #reg "\n\t" \
+ "ldx [" #pic_reg " + " #reg "], " #reg "\n"
+#endif
+
#define __S1(x) #x
#define __S(x) __S1(x)
@@ -288,24 +300,20 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
"1: call 11f\n" \
" sethi %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n" \
"11: or %l7, %lo(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n" \
-" sethi %hi(_dl_skip_args), %g5\n" \
" add %l7, %o7, %l7\n" \
-" or %g5, %lo(_dl_skip_args), %g5\n" \
" /* Save the user entry point address in %l0. */\n" \
" mov %o0, %l0\n" \
" /* See if we were run as a command with the executable file name as an\n" \
" extra leading argument. If so, we must shift things around since we\n" \
" must keep the stack doubleword aligned. */\n" \
-" ldx [%l7 + %g5], %i0\n" \
-" ld [%i0], %i0\n" \
+ RTLD_GOT_ADDRESS(%l7, %g5, _dl_skip_args) \
+" ld [%g5], %i0\n" \
" brz,pt %i0, 2f\n" \
" ldx [%sp + " __S(STACK_BIAS) " + 22*8], %i5\n" \
" /* Find out how far to shift. */\n" \
-" sethi %hi(_dl_argv), %l4\n" \
" sub %i5, %i0, %i5\n" \
-" or %l4, %lo(_dl_argv), %l4\n" \
" sllx %i0, 3, %l6\n" \
-" ldx [%l7 + %l4], %l4\n" \
+ RTLD_GOT_ADDRESS(%l7, %l4, _dl_argv) \
" stx %i5, [%sp + " __S(STACK_BIAS) " + 22*8]\n" \
" add %sp, " __S(STACK_BIAS) " + 23*8, %i1\n" \
" add %i1, %l6, %i2\n" \
@@ -333,20 +341,16 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
" add %i1, 16, %i1\n" \
" stx %l5, [%l4]\n" \
" /* %o0 = _dl_loaded, %o1 = argc, %o2 = argv, %o3 = envp. */\n" \
-"2: sethi %hi(_rtld_local), %o0\n" \
-" add %sp, " __S(STACK_BIAS) " + 23*8, %o2\n" \
-" orcc %o0, %lo(_rtld_local), %o0\n" \
+"2:\t" RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) \
" sllx %i5, 3, %o3\n" \
-" ldx [%l7 + %o0], %o0\n" \
+" add %sp, " __S(STACK_BIAS) " + 23*8, %o2\n" \
" add %o3, 8, %o3\n" \
" mov %i5, %o1\n" \
" add %o2, %o3, %o3\n" \
" call _dl_init_internal\n" \
" ldx [%o0], %o0\n" \
" /* Pass our finalizer function to the user in %g1. */\n" \
-" sethi %hi(_dl_fini), %g1\n" \
-" or %g1, %lo(_dl_fini), %g1\n" \
-" ldx [%l7 + %g1], %g1\n" \
+ RTLD_GOT_ADDRESS(%l7, %g1, _dl_fini) \
" /* Jump to the user's entry point and deallocate the extra stack we got. */\n" \
" jmp %l0\n" \
" add %sp, 6*8, %sp\n" \
diff --git a/sysdeps/sparc/sparc64/elf/start.S b/sysdeps/sparc/sparc64/elf/start.S
index afae70b4ba..50f2df2c7e 100644
--- a/sysdeps/sparc/sparc64/elf/start.S
+++ b/sysdeps/sparc/sparc64/elf/start.S
@@ -40,18 +40,11 @@
.section ".text"
.align 4
-#ifdef SHARED
-.LLGETPC0:
- retl
- add %o7, %l7, %l7
-#endif
.global _start
.type _start,#function
_start:
#ifdef SHARED
- sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %l7
- call .LLGETPC0
- add %l7, %lo(_GLOBAL_OFFSET_TABLE_+4), %l7
+ SETUP_PIC_REG(l7)
#endif
/* Terminate the stack frame, and reserve space for functions to
@@ -66,17 +59,36 @@ _start:
add %sp, STACK_BIAS+23*8, %o2
/* Load the addresses of the user entry points. */
- sethi %hi(main), %o0
- sethi %hi(__libc_csu_init), %o3
- sethi %hi(__libc_csu_fini), %o4
- or %o0, %lo(main), %o0
- or %o3, %lo(__libc_csu_init), %o3
- or %o4, %lo(__libc_csu_fini), %o4
-#ifdef SHARED
+#ifndef SHARED
+ sethi %hi(main), %o0
+ sethi %hi(__libc_csu_init), %o3
+ sethi %hi(__libc_csu_fini), %o4
+ or %o0, %lo(main), %o0
+ or %o3, %lo(__libc_csu_init), %o3
+ or %o4, %lo(__libc_csu_fini), %o4
+#else
+#ifdef HAVE_BINUTILS_GOTDATA
+ sethi %gdop_hix22(main), %o0
+ sethi %gdop_hix22(__libc_csu_init), %o3
+ sethi %gdop_hix22(__libc_csu_fini), %o4
+ xor %o0, %gdop_lox10(main), %o0
+ xor %o3, %gdop_lox10(__libc_csu_init), %o3
+ xor %o4, %gdop_lox10(__libc_csu_fini), %o4
+ ldx [%l7 + %o0], %o0, %gdop(main)
+ ldx [%l7 + %o3], %o3, %gdop(__libc_csu_init)
+ ldx [%l7 + %o4], %o4, %gdop(__libc_csu_fini)
+#else
+ sethi %hi(main), %o0
+ sethi %hi(__libc_csu_init), %o3
+ sethi %hi(__libc_csu_fini), %o4
+ or %o0, %lo(main), %o0
+ or %o3, %lo(__libc_csu_init), %o3
+ or %o4, %lo(__libc_csu_fini), %o4
ldx [%l7 + %o0], %o0
ldx [%l7 + %o3], %o3
ldx [%l7 + %o4], %o4
#endif
+#endif
/* When starting a binary via the dynamic linker, %g1 contains the
address of the shared library termination function, which will be
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy.S b/sysdeps/sparc/sparc64/multiarch/memcpy.S
index 2fd5e9bf9b..739687f3b8 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy.S
@@ -25,12 +25,7 @@
ENTRY(memcpy)
.type memcpy, @gnu_indirect_function
# ifdef SHARED
- mov %o7, %o5
- sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %o3
- call 1f
- or %o3, %lo(_GLOBAL_OFFSET_TABLE_+4), %o3
-1: add %o7, %o3, %o3
- mov %o5, %o7
+ SETUP_PIC_REG_LEAF(o3, o5)
# endif
andcc %o0, HWCAP_SPARC_N2, %g0
be 1f
diff --git a/sysdeps/sparc/sparc64/multiarch/memset.S b/sysdeps/sparc/sparc64/multiarch/memset.S
index bf2eb637e6..13533450c2 100644
--- a/sysdeps/sparc/sparc64/multiarch/memset.S
+++ b/sysdeps/sparc/sparc64/multiarch/memset.S
@@ -25,12 +25,7 @@
ENTRY(memset)
.type memset, @gnu_indirect_function
# ifdef SHARED
- mov %o7, %o5
- sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %o3
- call 1f
- or %o3, %lo(_GLOBAL_OFFSET_TABLE_+4), %o3
-1: add %o7, %o3, %o3
- mov %o5, %o7
+ SETUP_PIC_REG_LEAF(o3, o5)
# endif
andcc %o0, HWCAP_SPARC_BLKINIT, %g0
be 9f
@@ -61,12 +56,7 @@ END(memset)
ENTRY(__bzero)
.type bzero, @gnu_indirect_function
# ifdef SHARED
- mov %o7, %o5
- sethi %hi(_GLOBAL_OFFSET_TABLE_-4), %o3
- call 1f
- or %o3, %lo(_GLOBAL_OFFSET_TABLE_+4), %o3
-1: add %o7, %o3, %o3
- mov %o5, %o7
+ SETUP_PIC_REG_LEAF(o3, o5)
# endif
andcc %o0, HWCAP_SPARC_BLKINIT, %g0
be 9f