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author | David S. Miller <davem@davemloft.net> | 2012-03-09 20:48:06 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2012-03-09 20:48:06 -0800 |
commit | 2d2cd51564c7fa6f82677e9f4baab8e6996380b5 (patch) | |
tree | 0a4ddd2c985725ef6138a1cc38b652df985834d5 /sysdeps/sparc/sparc32/dl-trampoline.S | |
parent | 9a07f9d01f1689e99e89bbb5ec48e6930da755f1 (diff) | |
download | glibc-2d2cd51564c7fa6f82677e9f4baab8e6996380b5.tar.gz glibc-2d2cd51564c7fa6f82677e9f4baab8e6996380b5.tar.xz glibc-2d2cd51564c7fa6f82677e9f4baab8e6996380b5.zip |
Fix bugs in sparc PLT profiling register management, and add sparc sotruss support.
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela): Protect local variables with appropriate CPP guards. * sysdeps/sparc/sparc32/dl-trampoline.S: Propagate the stack_ptr from the frame pointer, not the stack pointer. Correct layout comments. Fix test on resulting framesize and the management of the outregs buffer for pltexit. Preserve floating point return values across _dl_call_pltexit call. * sysdeps/sparc/sparc64/dl-trampoline.S: Fix test on resulting framesize and the management of the outregs buffer for pltexit. Preserve floating point return values across _dl_call_pltexit call. * elf/sotruss-lib.c (la_sparc32_gnu_pltenter, la_sparc64_gnu_pltenter, la_sparc32_gnu_pltexit, la_sparc64_gnu_pltexit): New functions. (print_exit): Fix format string for return register value.
Diffstat (limited to 'sysdeps/sparc/sparc32/dl-trampoline.S')
-rw-r--r-- | sysdeps/sparc/sparc32/dl-trampoline.S | 58 |
1 files changed, 31 insertions, 27 deletions
diff --git a/sysdeps/sparc/sparc32/dl-trampoline.S b/sysdeps/sparc/sparc32/dl-trampoline.S index 79ec79fe9e..44794592aa 100644 --- a/sysdeps/sparc/sparc32/dl-trampoline.S +++ b/sysdeps/sparc/sparc32/dl-trampoline.S @@ -1,5 +1,5 @@ /* PLT trampolines. Sparc 32-bit version. - Copyright (C) 2005 Free Software Foundation, Inc. + Copyright (C) 2005, 2012 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 @@ -48,17 +48,20 @@ _dl_runtime_resolve: .size _dl_runtime_resolve, .-_dl_runtime_resolve /* For the profiling cases we pass in our stack frame - * as the base of the La_sparc64_regs, so it looks + * as the base of the La_sparc32_regs, so it looks * like: - * %l0 %sp + * %l0 %sp + (0 * 8) + * %l1 %sp + (0 * 8) + 4 * ... - * %l7 %sp + (7 * 8) - * %i0 %sp + (8 * 8) + * %l6 %sp + (3 * 8) + * %l7 %sp + (3 * 8) + 4 + * %i0 %sp + (4 * 8) + * %i1 %sp + (4 * 8) + 4 * ... - * %i7 %sp + (15 * 8) - * %f0 %sp + (16 * 8) - * %f16 %sp + (31 * 8) - * framesize %sp + (32 * 8) + * %i6 %sp + (7 * 8) + * %i7 %sp + (7 * 8) + 4 + * struct_ret_ptr %sp + (8 * 8) + * framesize %sp + (9 * 8) */ .globl _dl_profile_save_regs @@ -74,7 +77,7 @@ _dl_profile_save_regs: std %i2, [%sp + ( 5 * 8)] std %i4, [%sp + ( 6 * 8)] std %i6, [%sp + ( 7 * 8)] - ld [%sp + (8 * 8)], %l4 + ld [%fp + (8 * 8)], %l4 retl st %l4, [%sp + (8 * 8)] @@ -91,8 +94,11 @@ _dl_profile_save_regs: _dl_profile_invoke: cfi_startproc - sub %sp, %l0, %sp -1: + add %l0, 7, %l0 + andn %l0, 7, %l0 + add %l0, 2 * 8, %g1 + + sub %sp, %g1, %sp srl %l0, 3, %l7 mov %o0, %l1 mov %i0, %o0 @@ -101,8 +107,10 @@ _dl_profile_invoke: mov %i3, %o3 mov %i4, %o4 mov %i5, %o5 + cmp %l0, 0 mov %fp, %l2 - mov %sp, %l3 + be 2f + add %sp, (11 * 8), %l3 1: ldd [%l2], %g2 add %l2, 0x8, %l2 subcc %l7, 1, %l7 @@ -110,7 +118,7 @@ _dl_profile_invoke: bne 1b add %l3, 0x8, %l3 - jmpl %l1, %o7 +2: jmpl %l1, %o7 nop std %o0, [%sp + ( 9 * 8)] @@ -118,11 +126,12 @@ _dl_profile_invoke: mov %l5, %o0 mov %l6, %o1 - add %sp, %l0, %o2 + add %sp, (11 * 8), %o2 call _dl_call_pltexit - add %sp, (16 * 8), %o3 + add %sp, ( 9 * 8), %o3 - ldd [%sp + (9 * 8)], %i0 + ldd [%sp + ( 9 * 8)], %i0 + ldd [%sp + (10 * 8)], %f0 jmpl %i7 + 8, %g0 restore @@ -142,11 +151,7 @@ _dl_profile_invoke: _dl_runtime_profile: cfi_startproc - cmp %fp, 0 - be,a 1f - mov 104, %g3 - sub %fp, %sp, %g3 -1: save %sp, -104, %sp + save %sp, -104, %sp cfi_def_cfa_register(%fp) cfi_window_save cfi_register(%o7, %i7) @@ -156,20 +161,19 @@ _dl_runtime_profile: mov %i7, %o2 sub %o1, 4*12, %o1 - mov %g3, %l0 mov %o0, %l5 mov %o1, %l6 - call _dl_profile_save_regs + call _dl_profile_save_regs nop mov %sp, %o3 call _dl_profile_fixup add %sp, (9 * 8), %o4 - ld [%sp + (9 * 8)], %o1 - cmp %o1, 0 - bgeu 1f + ld [%sp + (9 * 8)], %l0 + cmp %l0, 0 + bl 1f nop call _dl_profile_invoke |