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Support mixed SSE/AVX audit and check AVX only once.
This patch fixes mixed SSE/AVX audit and checks AVX only once in _dl_runtime_profile. When an AVX or SSE register value in pltenter is modified, we have to make sure that the SSE part value is the same in both lr_xmm and lr_vector fields so that pltexit will get the correct value from either lr_xmm or lr_vector fields. AVX-enabled pltenter should update both lr_xmm and lr_vector fields to support stacked AVX/SSE pltenter functions.
This commit is contained in:
H.J. Lu
Ulrich Drepper
parent
fc1870e6a4
commit
4e1e2f4247
28
ChangeLog
28
ChangeLog
@ -1,3 +1,31 @@
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2009-08-01 H.J. Lu <hongjiu.lu@intel.com>
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* elf/Makefile (distribute): Add tst-audit6.c tst-auditmod6a.c
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tst-auditmod6b.c tst-auditmod6c.c tst-audit7.c tst-auditmod7a.c
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tst-auditmod7b.c.
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(tests): Add tst-audit6 tst-audit7.
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(modules-names): Add st-auditmod6a tst-auditmod6b tst-auditmod6c
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tst-auditmod7a tst-auditmod7b.
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($(objpfx)tst-audit6): New.
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($(objpfx)tst-audit6.out): Likewise.
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($(objpfx)tst-audit7): Likewise.
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($(objpfx)tst-audit7.out): Likewise.
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(tst-audit6-ENV): Likewise.
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(tst-audit7-ENV): Likewise.
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(CFLAGS-tst-auditmod6b.c): Likewise.
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(CFLAGS-tst-auditmod6c.c): Likewise.
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(CFLAGS-tst-auditmod7b.c): Likewise.
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* elf/tst-audit6.c: New file.
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* elf/tst-audit7.c: New file.
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* elf/tst-auditmod6a.c: New file.
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* elf/tst-auditmod6b.c: New file.
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* elf/tst-auditmod6c.c: New file.
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* elf/tst-auditmod7a.c: New file.
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* elf/tst-auditmod7b.c: New file.
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* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Move
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saving and restoring SSE/AVX registers to ...
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* sysdeps/x86_64/dl-trampoline.h: This. New file.
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2009-08-07 H.J. Lu <hongjiu.lu@intel.com>
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* sysdeps/i386/i686/multiarch/strcspn.S (STRCSPN): Use PIC
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21
elf/Makefile
21
elf/Makefile
@ -93,6 +93,9 @@ distribute := rtld-Rules \
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tst-auditmod1.c tst-auditmod3a.c tst-auditmod3b.c \
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tst-auditmod4a.c tst-auditmod4b.c \
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tst-audit5.c tst-auditmod5a.c tst-auditmod5b.c \
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tst-audit6.c tst-auditmod6a.c tst-auditmod6b.c \
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tst-auditmod6c.c \
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tst-audit7.c tst-auditmod7a.c tst-auditmod7b.c \
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order2mod1.c order2mod2.c order2mod3.c order2mod4.c \
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tst-stackguard1.c tst-stackguard1-static.c \
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tst-array5.c tst-array5-static.c tst-array5dep.c \
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@ -200,7 +203,7 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
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test-srcs = tst-pathopt
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tests-execstack-yes = tst-execstack tst-execstack-needed tst-execstack-prog
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ifeq (x86_64,$(config-machine))
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tests += tst-audit3 tst-audit4 tst-audit5
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tests += tst-audit3 tst-audit4 tst-audit5 tst-audit6 tst-audit7
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endif
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endif
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ifeq (yesyes,$(have-fpie)$(build-shared))
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@ -255,7 +258,9 @@ endif
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ifeq (x86_64,$(config-machine))
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modules-names += tst-auditmod3a tst-auditmod3b \
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tst-auditmod4a tst-auditmod4b \
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tst-auditmod5a tst-auditmod5b
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tst-auditmod5a tst-auditmod5b \
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tst-auditmod6a tst-auditmod6b tst-auditmod6c \
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tst-auditmod7a tst-auditmod7b
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endif
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modules-execstack-yes = tst-execstack-mod
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extra-test-objs += $(addsuffix .os,$(strip $(modules-names)))
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@ -987,6 +992,15 @@ $(objpfx)tst-audit5: $(objpfx)tst-auditmod5a.so
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$(objpfx)tst-audit5.out: $(objpfx)tst-auditmod5b.so
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tst-audit5-ENV = LD_AUDIT=$(objpfx)tst-auditmod5b.so
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$(objpfx)tst-audit6: $(objpfx)tst-auditmod6a.so
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$(objpfx)tst-audit6.out: $(objpfx)tst-auditmod6b.so \
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$(objpfx)tst-auditmod6c.so
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tst-audit6-ENV = LD_AUDIT=$(objpfx)tst-auditmod6b.so:$(objpfx)tst-auditmod6c.so
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$(objpfx)tst-audit7: $(objpfx)tst-auditmod7a.so
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$(objpfx)tst-audit7.out: $(objpfx)tst-auditmod7b.so
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tst-audit7-ENV = LD_AUDIT=$(objpfx)tst-auditmod7b.so
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$(objpfx)tst-global1: $(libdl)
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$(objpfx)tst-global1.out: $(objpfx)testobj6.so $(objpfx)testobj2.so
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@ -1134,4 +1148,7 @@ ifeq (yes,$(config-cflags-avx))
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CFLAGS-tst-audit4.c += -mavx
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CFLAGS-tst-auditmod4a.c += -mavx
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CFLAGS-tst-auditmod4b.c += -mavx
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CFLAGS-tst-auditmod6b.c += -mavx
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CFLAGS-tst-auditmod6c.c += -mavx
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CFLAGS-tst-auditmod7b.c += -mavx
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endif
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28
elf/tst-audit6.c
Normal file
28
elf/tst-audit6.c
Normal file
@ -0,0 +1,28 @@
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/* Test case for x86-64 preserved registers in dynamic linker. */
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#include <stdlib.h>
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#include <string.h>
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#include <cpuid.h>
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#include <emmintrin.h>
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extern __m128i audit_test (__m128i, __m128i, __m128i, __m128i,
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__m128i, __m128i, __m128i, __m128i);
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int
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main (void)
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{
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unsigned int eax, ebx, ecx, edx;
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/* Run AVX test only if AVX is supported. */
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if (__get_cpuid (1, &eax, &ebx, &ecx, &edx)
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&& (ecx & bit_AVX))
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{
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__m128i xmm = _mm_setzero_si128 ();
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__m128i ret = audit_test (xmm, xmm, xmm, xmm, xmm, xmm, xmm, xmm);
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xmm = _mm_set1_epi32 (0x98abcdef);
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if (memcmp (&xmm, &ret, sizeof (ret)))
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abort ();
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}
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return 0;
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}
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1
elf/tst-audit7.c
Normal file
1
elf/tst-audit7.c
Normal file
@ -0,0 +1 @@
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#include "tst-audit6.c"
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46
elf/tst-auditmod6a.c
Normal file
46
elf/tst-auditmod6a.c
Normal file
@ -0,0 +1,46 @@
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/* Test case for x86-64 preserved registers in dynamic linker. */
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#include <stdlib.h>
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#include <string.h>
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#include <emmintrin.h>
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__m128i
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audit_test (__m128i x0, __m128i x1, __m128i x2, __m128i x3,
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__m128i x4, __m128i x5, __m128i x6, __m128i x7)
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{
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__m128i xmm;
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xmm = _mm_set1_epi32 (0x100);
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if (memcmp (&xmm, &x0, sizeof (xmm)))
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abort ();
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xmm = _mm_set1_epi32 (0x101);
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if (memcmp (&xmm, &x1, sizeof (xmm)))
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abort ();
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xmm = _mm_set1_epi32 (0x102);
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if (memcmp (&xmm, &x2, sizeof (xmm)))
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abort ();
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xmm = _mm_set1_epi32 (0x103);
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if (memcmp (&xmm, &x3, sizeof (xmm)))
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abort ();
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xmm = _mm_set1_epi32 (0x104);
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if (memcmp (&xmm, &x4, sizeof (xmm)))
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abort ();
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xmm = _mm_set1_epi32 (0x105);
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if (memcmp (&xmm, &x5, sizeof (xmm)))
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abort ();
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xmm = _mm_set1_epi32 (0x106);
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if (memcmp (&xmm, &x6, sizeof (xmm)))
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abort ();
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xmm = _mm_set1_epi32 (0x107);
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if (memcmp (&xmm, &x7, sizeof (xmm)))
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abort ();
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return _mm_setzero_si128 ();
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}
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220
elf/tst-auditmod6b.c
Normal file
220
elf/tst-auditmod6b.c
Normal file
@ -0,0 +1,220 @@
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/* Verify that changing AVX registers in audit library won't affect
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function parameter passing/return. */
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#include <dlfcn.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <bits/wordsize.h>
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#include <gnu/lib-names.h>
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unsigned int
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la_version (unsigned int v)
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{
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setlinebuf (stdout);
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printf ("version: %u\n", v);
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char buf[20];
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sprintf (buf, "%u", v);
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return v;
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}
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void
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la_activity (uintptr_t *cookie, unsigned int flag)
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{
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if (flag == LA_ACT_CONSISTENT)
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printf ("activity: consistent\n");
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else if (flag == LA_ACT_ADD)
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printf ("activity: add\n");
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else if (flag == LA_ACT_DELETE)
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printf ("activity: delete\n");
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else
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printf ("activity: unknown activity %u\n", flag);
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}
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char *
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la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
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{
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char buf[100];
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const char *flagstr;
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if (flag == LA_SER_ORIG)
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flagstr = "LA_SET_ORIG";
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else if (flag == LA_SER_LIBPATH)
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flagstr = "LA_SER_LIBPATH";
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else if (flag == LA_SER_RUNPATH)
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flagstr = "LA_SER_RUNPATH";
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else if (flag == LA_SER_CONFIG)
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flagstr = "LA_SER_CONFIG";
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else if (flag == LA_SER_DEFAULT)
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flagstr = "LA_SER_DEFAULT";
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else if (flag == LA_SER_SECURE)
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flagstr = "LA_SER_SECURE";
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else
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{
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sprintf (buf, "unknown flag %d", flag);
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flagstr = buf;
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}
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printf ("objsearch: %s, %s\n", name, flagstr);
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return (char *) name;
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}
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unsigned int
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la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
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{
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printf ("objopen: %ld, %s\n", lmid, l->l_name);
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return 3;
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}
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void
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la_preinit (uintptr_t *cookie)
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{
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printf ("preinit\n");
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}
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unsigned int
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la_objclose (uintptr_t *cookie)
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{
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printf ("objclose\n");
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return 0;
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}
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uintptr_t
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la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
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uintptr_t *defcook, unsigned int *flags, const char *symname)
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{
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printf ("symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
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symname, (long int) sym->st_value, ndx, *flags);
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return sym->st_value;
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}
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#define pltenter la_x86_64_gnu_pltenter
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#define pltexit la_x86_64_gnu_pltexit
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#define La_regs La_x86_64_regs
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#define La_retval La_x86_64_retval
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#define int_retval lrv_rax
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#include <tst-audit.h>
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#ifdef __AVX__
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#include <immintrin.h>
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#include <cpuid.h>
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static int avx = -1;
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static int
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__attribute ((always_inline))
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check_avx (void)
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{
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if (avx == -1)
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{
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unsigned int eax, ebx, ecx, edx;
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if (__get_cpuid (1, &eax, &ebx, &ecx, &edx)
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&& (ecx & bit_AVX))
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avx = 1;
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else
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avx = 0;
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}
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return avx;
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}
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#else
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#include <emmintrin.h>
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#endif
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ElfW(Addr)
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pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
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uintptr_t *defcook, La_regs *regs, unsigned int *flags,
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const char *symname, long int *framesizep)
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{
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printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
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symname, (long int) sym->st_value, ndx, *flags);
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#ifdef __AVX__
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if (check_avx () && strcmp (symname, "audit_test") == 0)
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{
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int i;
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__m128i xmm = _mm_setzero_si128 ();
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for (i = 0; i < 8; i++)
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if (memcmp (®s->lr_xmm[i], &xmm, sizeof (xmm))
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|| memcmp (®s->lr_vector[i], &xmm, sizeof (xmm)))
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abort ();
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for (i = 0; i < 8; i += 2)
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{
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regs->lr_xmm[i] = (La_x86_64_xmm) _mm_set1_epi32 (i + 1);
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regs->lr_vector[i].xmm[0] = regs->lr_xmm[i];
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regs->lr_vector[i + 1].ymm[0]
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= (La_x86_64_ymm) _mm256_set1_epi32 (i + 2);
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regs->lr_xmm[i + 1] = regs->lr_vector[i + 1].xmm[0];
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}
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__m256i ymm = _mm256_set1_epi32 (-1);
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asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
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asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
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asm volatile ("vmovdqa %0, %%ymm2" : : "x" (ymm) : "xmm2" );
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asm volatile ("vmovdqa %0, %%ymm3" : : "x" (ymm) : "xmm3" );
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asm volatile ("vmovdqa %0, %%ymm4" : : "x" (ymm) : "xmm4" );
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asm volatile ("vmovdqa %0, %%ymm5" : : "x" (ymm) : "xmm5" );
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asm volatile ("vmovdqa %0, %%ymm6" : : "x" (ymm) : "xmm6" );
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asm volatile ("vmovdqa %0, %%ymm7" : : "x" (ymm) : "xmm7" );
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*framesizep = 1024;
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}
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#endif
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return sym->st_value;
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}
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unsigned int
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pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
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uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
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const char *symname)
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{
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printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
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symname, (long int) sym->st_value, ndx, outregs->int_retval);
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#ifdef __AVX__
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if (check_avx () && strcmp (symname, "audit_test") == 0)
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{
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int i;
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__m128i xmm = _mm_setzero_si128 ();
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if (memcmp (&outregs->lrv_xmm0, &xmm, sizeof (xmm))
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|| memcmp (&outregs->lrv_vector0, &xmm, sizeof (xmm)))
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abort ();
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__m256i ymm;
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for (i = 0; i < 8; i += 2)
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{
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xmm = _mm_set1_epi32 (i + 0x100);
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if (memcmp (&inregs->lr_xmm[i], &xmm, sizeof (xmm))
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|| memcmp (&inregs->lr_vector[i], &xmm, sizeof (xmm)))
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abort ();
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ymm = _mm256_set1_epi32 (i + 0x101);
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if (memcmp (&inregs->lr_xmm[i + 1],
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&inregs->lr_vector[i + 1].xmm[0], sizeof (xmm))
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|| memcmp (&inregs->lr_vector[i + 1], &ymm, sizeof (ymm)))
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abort ();
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}
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outregs->lrv_vector0.ymm[0]
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= (La_x86_64_ymm) _mm256_set1_epi32 (0x12349876);
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ymm = _mm256_set1_epi32 (-1);
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asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
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asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
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}
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#endif
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return 0;
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}
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225
elf/tst-auditmod6c.c
Normal file
225
elf/tst-auditmod6c.c
Normal file
@ -0,0 +1,225 @@
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/* Verify that changing AVX registers in audit library won't affect
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function parameter passing/return. */
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#include <dlfcn.h>
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#include <stdint.h>
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#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <bits/wordsize.h>
|
||||
#include <gnu/lib-names.h>
|
||||
|
||||
unsigned int
|
||||
la_version (unsigned int v)
|
||||
{
|
||||
setlinebuf (stdout);
|
||||
|
||||
printf ("version: %u\n", v);
|
||||
|
||||
char buf[20];
|
||||
sprintf (buf, "%u", v);
|
||||
|
||||
return v;
|
||||
}
|
||||
|
||||
void
|
||||
la_activity (uintptr_t *cookie, unsigned int flag)
|
||||
{
|
||||
if (flag == LA_ACT_CONSISTENT)
|
||||
printf ("activity: consistent\n");
|
||||
else if (flag == LA_ACT_ADD)
|
||||
printf ("activity: add\n");
|
||||
else if (flag == LA_ACT_DELETE)
|
||||
printf ("activity: delete\n");
|
||||
else
|
||||
printf ("activity: unknown activity %u\n", flag);
|
||||
}
|
||||
|
||||
char *
|
||||
la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
|
||||
{
|
||||
char buf[100];
|
||||
const char *flagstr;
|
||||
if (flag == LA_SER_ORIG)
|
||||
flagstr = "LA_SET_ORIG";
|
||||
else if (flag == LA_SER_LIBPATH)
|
||||
flagstr = "LA_SER_LIBPATH";
|
||||
else if (flag == LA_SER_RUNPATH)
|
||||
flagstr = "LA_SER_RUNPATH";
|
||||
else if (flag == LA_SER_CONFIG)
|
||||
flagstr = "LA_SER_CONFIG";
|
||||
else if (flag == LA_SER_DEFAULT)
|
||||
flagstr = "LA_SER_DEFAULT";
|
||||
else if (flag == LA_SER_SECURE)
|
||||
flagstr = "LA_SER_SECURE";
|
||||
else
|
||||
{
|
||||
sprintf (buf, "unknown flag %d", flag);
|
||||
flagstr = buf;
|
||||
}
|
||||
printf ("objsearch: %s, %s\n", name, flagstr);
|
||||
|
||||
return (char *) name;
|
||||
}
|
||||
|
||||
unsigned int
|
||||
la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
|
||||
{
|
||||
printf ("objopen: %ld, %s\n", lmid, l->l_name);
|
||||
|
||||
return 3;
|
||||
}
|
||||
|
||||
void
|
||||
la_preinit (uintptr_t *cookie)
|
||||
{
|
||||
printf ("preinit\n");
|
||||
}
|
||||
|
||||
unsigned int
|
||||
la_objclose (uintptr_t *cookie)
|
||||
{
|
||||
printf ("objclose\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
uintptr_t
|
||||
la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
|
||||
uintptr_t *defcook, unsigned int *flags, const char *symname)
|
||||
{
|
||||
printf ("symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
|
||||
symname, (long int) sym->st_value, ndx, *flags);
|
||||
|
||||
return sym->st_value;
|
||||
}
|
||||
|
||||
#define pltenter la_x86_64_gnu_pltenter
|
||||
#define pltexit la_x86_64_gnu_pltexit
|
||||
#define La_regs La_x86_64_regs
|
||||
#define La_retval La_x86_64_retval
|
||||
#define int_retval lrv_rax
|
||||
|
||||
#include <tst-audit.h>
|
||||
|
||||
#ifdef __AVX__
|
||||
#include <immintrin.h>
|
||||
#include <cpuid.h>
|
||||
|
||||
static int avx = -1;
|
||||
|
||||
static int
|
||||
__attribute ((always_inline))
|
||||
check_avx (void)
|
||||
{
|
||||
if (avx == -1)
|
||||
{
|
||||
unsigned int eax, ebx, ecx, edx;
|
||||
|
||||
if (__get_cpuid (1, &eax, &ebx, &ecx, &edx)
|
||||
&& (ecx & bit_AVX))
|
||||
avx = 1;
|
||||
else
|
||||
avx = 0;
|
||||
}
|
||||
return avx;
|
||||
}
|
||||
#else
|
||||
#include <emmintrin.h>
|
||||
#endif
|
||||
|
||||
ElfW(Addr)
|
||||
pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
|
||||
uintptr_t *defcook, La_regs *regs, unsigned int *flags,
|
||||
const char *symname, long int *framesizep)
|
||||
{
|
||||
printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
|
||||
symname, (long int) sym->st_value, ndx, *flags);
|
||||
|
||||
#ifdef __AVX__
|
||||
if (check_avx () && strcmp (symname, "audit_test") == 0)
|
||||
{
|
||||
int i;
|
||||
__m128i xmm;
|
||||
__m256i ymm;
|
||||
|
||||
for (i = 0; i < 8; i += 2)
|
||||
{
|
||||
xmm = _mm_set1_epi32 (i + 1);
|
||||
if (memcmp (®s->lr_xmm[i], &xmm, sizeof (xmm))
|
||||
|| memcmp (®s->lr_vector[i], &xmm, sizeof (xmm)))
|
||||
abort ();
|
||||
regs->lr_xmm[i] = (La_x86_64_xmm) _mm_set1_epi32 (i + 0x100);
|
||||
regs->lr_vector[i].xmm[0] = regs->lr_xmm[i];
|
||||
|
||||
ymm = _mm256_set1_epi32 (i + 2);
|
||||
if (memcmp (®s->lr_xmm[i + 1],
|
||||
®s->lr_vector[i + 1].xmm[0], sizeof (xmm))
|
||||
|| memcmp (®s->lr_vector[i + 1], &ymm, sizeof (ymm)))
|
||||
abort ();
|
||||
regs->lr_vector[i + 1].ymm[0]
|
||||
= (La_x86_64_ymm) _mm256_set1_epi32 (i + 0x101);
|
||||
regs->lr_xmm[i + 1] = regs->lr_vector[i + 1].xmm[0];
|
||||
}
|
||||
|
||||
ymm = _mm256_set1_epi32 (-1);
|
||||
asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
|
||||
asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
|
||||
asm volatile ("vmovdqa %0, %%ymm2" : : "x" (ymm) : "xmm2" );
|
||||
asm volatile ("vmovdqa %0, %%ymm3" : : "x" (ymm) : "xmm3" );
|
||||
asm volatile ("vmovdqa %0, %%ymm4" : : "x" (ymm) : "xmm4" );
|
||||
asm volatile ("vmovdqa %0, %%ymm5" : : "x" (ymm) : "xmm5" );
|
||||
asm volatile ("vmovdqa %0, %%ymm6" : : "x" (ymm) : "xmm6" );
|
||||
asm volatile ("vmovdqa %0, %%ymm7" : : "x" (ymm) : "xmm7" );
|
||||
|
||||
*framesizep = 1024;
|
||||
}
|
||||
#endif
|
||||
|
||||
return sym->st_value;
|
||||
}
|
||||
|
||||
unsigned int
|
||||
pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
|
||||
uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
|
||||
const char *symname)
|
||||
{
|
||||
printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
|
||||
symname, (long int) sym->st_value, ndx, outregs->int_retval);
|
||||
|
||||
#ifdef __AVX__
|
||||
if (check_avx () && strcmp (symname, "audit_test") == 0)
|
||||
{
|
||||
int i;
|
||||
|
||||
__m256i ymm = _mm256_set1_epi32 (0x12349876);;
|
||||
if (memcmp (&outregs->lrv_vector0, &ymm, sizeof (ymm)))
|
||||
abort ();
|
||||
|
||||
__m128i xmm;
|
||||
|
||||
for (i = 0; i < 8; i += 2)
|
||||
{
|
||||
xmm = _mm_set1_epi32 (i + 0x100);
|
||||
if (memcmp (&inregs->lr_xmm[i], &xmm, sizeof (xmm))
|
||||
|| memcmp (&inregs->lr_vector[i], &xmm, sizeof (xmm)))
|
||||
abort ();
|
||||
|
||||
ymm = _mm256_set1_epi32 (i + 0x101);
|
||||
if (memcmp (&inregs->lr_xmm[i + 1],
|
||||
&inregs->lr_vector[i + 1].xmm[0], sizeof (xmm))
|
||||
|| memcmp (&inregs->lr_vector[i + 1], &ymm, sizeof (ymm)))
|
||||
abort ();
|
||||
}
|
||||
|
||||
outregs->lrv_vector0.ymm[0]
|
||||
= (La_x86_64_ymm) _mm256_set1_epi32 (0x98abcdef);
|
||||
|
||||
ymm = _mm256_set1_epi32 (-1);
|
||||
asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
|
||||
asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
1
elf/tst-auditmod7a.c
Normal file
1
elf/tst-auditmod7a.c
Normal file
@ -0,0 +1 @@
|
||||
#include "tst-auditmod6a.c"
|
||||
218
elf/tst-auditmod7b.c
Normal file
218
elf/tst-auditmod7b.c
Normal file
@ -0,0 +1,218 @@
|
||||
/* Verify that changing AVX registers in audit library won't affect
|
||||
function parameter passing/return. */
|
||||
|
||||
#include <dlfcn.h>
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <bits/wordsize.h>
|
||||
#include <gnu/lib-names.h>
|
||||
|
||||
unsigned int
|
||||
la_version (unsigned int v)
|
||||
{
|
||||
setlinebuf (stdout);
|
||||
|
||||
printf ("version: %u\n", v);
|
||||
|
||||
char buf[20];
|
||||
sprintf (buf, "%u", v);
|
||||
|
||||
return v;
|
||||
}
|
||||
|
||||
void
|
||||
la_activity (uintptr_t *cookie, unsigned int flag)
|
||||
{
|
||||
if (flag == LA_ACT_CONSISTENT)
|
||||
printf ("activity: consistent\n");
|
||||
else if (flag == LA_ACT_ADD)
|
||||
printf ("activity: add\n");
|
||||
else if (flag == LA_ACT_DELETE)
|
||||
printf ("activity: delete\n");
|
||||
else
|
||||
printf ("activity: unknown activity %u\n", flag);
|
||||
}
|
||||
|
||||
char *
|
||||
la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
|
||||
{
|
||||
char buf[100];
|
||||
const char *flagstr;
|
||||
if (flag == LA_SER_ORIG)
|
||||
flagstr = "LA_SET_ORIG";
|
||||
else if (flag == LA_SER_LIBPATH)
|
||||
flagstr = "LA_SER_LIBPATH";
|
||||
else if (flag == LA_SER_RUNPATH)
|
||||
flagstr = "LA_SER_RUNPATH";
|
||||
else if (flag == LA_SER_CONFIG)
|
||||
flagstr = "LA_SER_CONFIG";
|
||||
else if (flag == LA_SER_DEFAULT)
|
||||
flagstr = "LA_SER_DEFAULT";
|
||||
else if (flag == LA_SER_SECURE)
|
||||
flagstr = "LA_SER_SECURE";
|
||||
else
|
||||
{
|
||||
sprintf (buf, "unknown flag %d", flag);
|
||||
flagstr = buf;
|
||||
}
|
||||
printf ("objsearch: %s, %s\n", name, flagstr);
|
||||
|
||||
return (char *) name;
|
||||
}
|
||||
|
||||
unsigned int
|
||||
la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
|
||||
{
|
||||
printf ("objopen: %ld, %s\n", lmid, l->l_name);
|
||||
|
||||
return 3;
|
||||
}
|
||||
|
||||
void
|
||||
la_preinit (uintptr_t *cookie)
|
||||
{
|
||||
printf ("preinit\n");
|
||||
}
|
||||
|
||||
unsigned int
|
||||
la_objclose (uintptr_t *cookie)
|
||||
{
|
||||
printf ("objclose\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
uintptr_t
|
||||
la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
|
||||
uintptr_t *defcook, unsigned int *flags, const char *symname)
|
||||
{
|
||||
printf ("symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
|
||||
symname, (long int) sym->st_value, ndx, *flags);
|
||||
|
||||
return sym->st_value;
|
||||
}
|
||||
|
||||
#define pltenter la_x86_64_gnu_pltenter
|
||||
#define pltexit la_x86_64_gnu_pltexit
|
||||
#define La_regs La_x86_64_regs
|
||||
#define La_retval La_x86_64_retval
|
||||
#define int_retval lrv_rax
|
||||
|
||||
#include <tst-audit.h>
|
||||
|
||||
#ifdef __AVX__
|
||||
#include <immintrin.h>
|
||||
#include <cpuid.h>
|
||||
|
||||
static int avx = -1;
|
||||
|
||||
static int
|
||||
__attribute ((always_inline))
|
||||
check_avx (void)
|
||||
{
|
||||
if (avx == -1)
|
||||
{
|
||||
unsigned int eax, ebx, ecx, edx;
|
||||
|
||||
if (__get_cpuid (1, &eax, &ebx, &ecx, &edx)
|
||||
&& (ecx & bit_AVX))
|
||||
avx = 1;
|
||||
else
|
||||
avx = 0;
|
||||
}
|
||||
return avx;
|
||||
}
|
||||
#else
|
||||
#include <emmintrin.h>
|
||||
#endif
|
||||
|
||||
ElfW(Addr)
|
||||
pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
|
||||
uintptr_t *defcook, La_regs *regs, unsigned int *flags,
|
||||
const char *symname, long int *framesizep)
|
||||
{
|
||||
printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
|
||||
symname, (long int) sym->st_value, ndx, *flags);
|
||||
|
||||
#ifdef __AVX__
|
||||
if (check_avx () && strcmp (symname, "audit_test") == 0)
|
||||
{
|
||||
int i;
|
||||
|
||||
__m128i xmm = _mm_setzero_si128 ();
|
||||
for (i = 0; i < 8; i++)
|
||||
if (memcmp (®s->lr_xmm[i], &xmm, sizeof (xmm))
|
||||
|| memcmp (®s->lr_vector[i], &xmm, sizeof (xmm)))
|
||||
abort ();
|
||||
|
||||
for (i = 0; i < 8; i += 2)
|
||||
{
|
||||
regs->lr_xmm[i] = (La_x86_64_xmm) _mm_set1_epi32 (i + 0x100);
|
||||
regs->lr_vector[i + 1].ymm[0]
|
||||
= (La_x86_64_ymm) _mm256_set1_epi32 (i + 0x101);
|
||||
}
|
||||
|
||||
__m256i ymm = _mm256_set1_epi32 (-1);
|
||||
asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
|
||||
asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
|
||||
asm volatile ("vmovdqa %0, %%ymm2" : : "x" (ymm) : "xmm2" );
|
||||
asm volatile ("vmovdqa %0, %%ymm3" : : "x" (ymm) : "xmm3" );
|
||||
asm volatile ("vmovdqa %0, %%ymm4" : : "x" (ymm) : "xmm4" );
|
||||
asm volatile ("vmovdqa %0, %%ymm5" : : "x" (ymm) : "xmm5" );
|
||||
asm volatile ("vmovdqa %0, %%ymm6" : : "x" (ymm) : "xmm6" );
|
||||
asm volatile ("vmovdqa %0, %%ymm7" : : "x" (ymm) : "xmm7" );
|
||||
|
||||
*framesizep = 1024;
|
||||
}
|
||||
#endif
|
||||
|
||||
return sym->st_value;
|
||||
}
|
||||
|
||||
unsigned int
|
||||
pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
|
||||
uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
|
||||
const char *symname)
|
||||
{
|
||||
printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
|
||||
symname, (long int) sym->st_value, ndx, outregs->int_retval);
|
||||
|
||||
#ifdef __AVX__
|
||||
if (check_avx () && strcmp (symname, "audit_test") == 0)
|
||||
{
|
||||
int i;
|
||||
|
||||
__m128i xmm = _mm_setzero_si128 ();
|
||||
if (memcmp (&outregs->lrv_xmm0, &xmm, sizeof (xmm))
|
||||
|| memcmp (&outregs->lrv_vector0, &xmm, sizeof (xmm)))
|
||||
abort ();
|
||||
|
||||
__m256i ymm;
|
||||
|
||||
for (i = 0; i < 8; i += 2)
|
||||
{
|
||||
xmm = _mm_set1_epi32 (i + 0x100);
|
||||
if (memcmp (&inregs->lr_xmm[i], &xmm, sizeof (xmm))
|
||||
|| memcmp (&inregs->lr_vector[i], &xmm, sizeof (xmm)))
|
||||
abort ();
|
||||
|
||||
ymm = _mm256_set1_epi32 (i + 0x101);
|
||||
if (memcmp (&inregs->lr_xmm[i + 1],
|
||||
&inregs->lr_vector[i + 1].xmm[0], sizeof (xmm))
|
||||
|| memcmp (&inregs->lr_vector[i + 1], &ymm, sizeof (ymm)))
|
||||
abort ();
|
||||
}
|
||||
|
||||
outregs->lrv_vector0.ymm[0]
|
||||
= (La_x86_64_ymm) _mm256_set1_epi32 (0x98abcdef);
|
||||
|
||||
ymm = _mm256_set1_epi32 (-1);
|
||||
asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
|
||||
asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -146,247 +146,17 @@ L(have_avx):
|
||||
2: movl %eax, L(have_avx)(%rip)
|
||||
cmpl $0, %eax
|
||||
|
||||
1: js L(no_avx1)
|
||||
1: js L(no_avx)
|
||||
|
||||
/* This is to support AVX audit modules. */
|
||||
vmovdqu %ymm0, (LR_VECTOR_OFFSET)(%rsp)
|
||||
vmovdqu %ymm1, (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp)
|
||||
vmovdqu %ymm2, (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp)
|
||||
vmovdqu %ymm3, (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp)
|
||||
vmovdqu %ymm4, (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp)
|
||||
vmovdqu %ymm5, (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp)
|
||||
vmovdqu %ymm6, (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp)
|
||||
vmovdqu %ymm7, (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp)
|
||||
# define RESTORE_AVX
|
||||
# include "dl-trampoline.h"
|
||||
|
||||
/* Save xmm0-xmm7 registers to detect if any of them are
|
||||
changed by audit module. */
|
||||
vmovdqa %xmm0, (LR_SIZE)(%rsp)
|
||||
vmovdqa %xmm1, (LR_SIZE + XMM_SIZE)(%rsp)
|
||||
vmovdqa %xmm2, (LR_SIZE + XMM_SIZE*2)(%rsp)
|
||||
vmovdqa %xmm3, (LR_SIZE + XMM_SIZE*3)(%rsp)
|
||||
vmovdqa %xmm4, (LR_SIZE + XMM_SIZE*4)(%rsp)
|
||||
vmovdqa %xmm5, (LR_SIZE + XMM_SIZE*5)(%rsp)
|
||||
vmovdqa %xmm6, (LR_SIZE + XMM_SIZE*6)(%rsp)
|
||||
vmovdqa %xmm7, (LR_SIZE + XMM_SIZE*7)(%rsp)
|
||||
|
||||
L(no_avx1):
|
||||
.align 16
|
||||
L(no_avx):
|
||||
# endif
|
||||
|
||||
movq %rsp, %rcx # La_x86_64_regs pointer to %rcx.
|
||||
movq 48(%rbx), %rdx # Load return address if needed.
|
||||
movq 40(%rbx), %rsi # Copy args pushed by PLT in register.
|
||||
movq 32(%rbx), %rdi # %rdi: link_map, %rsi: reloc_index
|
||||
leaq 16(%rbx), %r8
|
||||
call _dl_profile_fixup # Call resolver.
|
||||
|
||||
movq %rax, %r11 # Save return value.
|
||||
|
||||
movq 8(%rbx), %rax # Get back register content.
|
||||
movq LR_RDX_OFFSET(%rsp), %rdx
|
||||
movq LR_R8_OFFSET(%rsp), %r8
|
||||
movq LR_R9_OFFSET(%rsp), %r9
|
||||
|
||||
movaps (LR_XMM_OFFSET)(%rsp), %xmm0
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE)(%rsp), %xmm1
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp), %xmm2
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp), %xmm3
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp), %xmm4
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp), %xmm5
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp), %xmm6
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp), %xmm7
|
||||
|
||||
# ifdef HAVE_AVX_SUPPORT
|
||||
cmpl $0, L(have_avx)(%rip)
|
||||
js L(no_avx2)
|
||||
|
||||
/* Check if any xmm0-xmm7 registers are changed by audit
|
||||
module. */
|
||||
vpcmpeqq (LR_SIZE)(%rsp), %xmm0, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu (LR_VECTOR_OFFSET)(%rsp), %ymm0
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp), %ymm1
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*2)(%rsp), %xmm2, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp), %ymm2
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*3)(%rsp), %xmm3, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp), %ymm3
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*4)(%rsp), %xmm4, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp), %ymm4
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*5)(%rsp), %xmm5, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp), %ymm5
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*6)(%rsp), %xmm6, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp), %ymm6
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*7)(%rsp), %xmm7, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp), %ymm7
|
||||
|
||||
L(no_avx2):
|
||||
1:
|
||||
# endif
|
||||
movq 16(%rbx), %r10 # Anything in framesize?
|
||||
testq %r10, %r10
|
||||
jns 3f
|
||||
|
||||
/* There's nothing in the frame size, so there
|
||||
will be no call to the _dl_call_pltexit. */
|
||||
|
||||
/* Get back registers content. */
|
||||
movq LR_RCX_OFFSET(%rsp), %rcx
|
||||
movq LR_RSI_OFFSET(%rsp), %rsi
|
||||
movq LR_RDI_OFFSET(%rsp), %rdi
|
||||
|
||||
movq %rbx, %rsp
|
||||
movq (%rsp), %rbx
|
||||
cfi_restore(rbx)
|
||||
cfi_def_cfa_register(%rsp)
|
||||
|
||||
addq $48, %rsp # Adjust the stack to the return value
|
||||
# (eats the reloc index and link_map)
|
||||
cfi_adjust_cfa_offset(-48)
|
||||
jmp *%r11 # Jump to function address.
|
||||
|
||||
3:
|
||||
cfi_adjust_cfa_offset(48)
|
||||
cfi_rel_offset(%rbx, 0)
|
||||
cfi_def_cfa_register(%rbx)
|
||||
|
||||
/* At this point we need to prepare new stack for the function
|
||||
which has to be called. We copy the original stack to a
|
||||
temporary buffer of the size specified by the 'framesize'
|
||||
returned from _dl_profile_fixup */
|
||||
|
||||
leaq LR_RSP_OFFSET(%rbx), %rsi # stack
|
||||
addq $8, %r10
|
||||
andq $0xfffffffffffffff0, %r10
|
||||
movq %r10, %rcx
|
||||
subq %r10, %rsp
|
||||
movq %rsp, %rdi
|
||||
shrq $3, %rcx
|
||||
rep
|
||||
movsq
|
||||
|
||||
movq 24(%rdi), %rcx # Get back register content.
|
||||
movq 32(%rdi), %rsi
|
||||
movq 40(%rdi), %rdi
|
||||
|
||||
call *%r11
|
||||
|
||||
mov 24(%rbx), %rsp # Drop the copied stack content
|
||||
|
||||
/* Now we have to prepare the La_x86_64_retval structure for the
|
||||
_dl_call_pltexit. The La_x86_64_regs is being pointed by rsp now,
|
||||
so we just need to allocate the sizeof(La_x86_64_retval) space on
|
||||
the stack, since the alignment has already been taken care of. */
|
||||
# ifdef HAVE_AVX_SUPPORT
|
||||
/* sizeof(La_x86_64_retval). Need extra space for 2 SSE
|
||||
registers to detect if xmm0/xmm1 registers are changed
|
||||
by audit module. */
|
||||
subq $(LRV_SIZE + XMM_SIZE*2), %rsp
|
||||
# else
|
||||
subq $LRV_SIZE, %rsp # sizeof(La_x86_64_retval)
|
||||
# endif
|
||||
movq %rsp, %rcx # La_x86_64_retval argument to %rcx.
|
||||
|
||||
/* Fill in the La_x86_64_retval structure. */
|
||||
movq %rax, LRV_RAX_OFFSET(%rcx)
|
||||
movq %rdx, LRV_RDX_OFFSET(%rcx)
|
||||
|
||||
movaps %xmm0, LRV_XMM0_OFFSET(%rcx)
|
||||
movaps %xmm1, LRV_XMM1_OFFSET(%rcx)
|
||||
|
||||
# ifdef HAVE_AVX_SUPPORT
|
||||
cmpl $0, L(have_avx)(%rip)
|
||||
js L(no_avx3)
|
||||
|
||||
/* This is to support AVX audit modules. */
|
||||
vmovdqu %ymm0, LRV_VECTOR0_OFFSET(%rcx)
|
||||
vmovdqu %ymm1, LRV_VECTOR1_OFFSET(%rcx)
|
||||
|
||||
/* Save xmm0/xmm1 registers to detect if they are changed
|
||||
by audit module. */
|
||||
vmovdqa %xmm0, (LRV_SIZE)(%rcx)
|
||||
vmovdqa %xmm1, (LRV_SIZE + XMM_SIZE)(%rcx)
|
||||
|
||||
L(no_avx3):
|
||||
# endif
|
||||
|
||||
fstpt LRV_ST0_OFFSET(%rcx)
|
||||
fstpt LRV_ST1_OFFSET(%rcx)
|
||||
|
||||
movq 24(%rbx), %rdx # La_x86_64_regs argument to %rdx.
|
||||
movq 40(%rbx), %rsi # Copy args pushed by PLT in register.
|
||||
movq 32(%rbx), %rdi # %rdi: link_map, %rsi: reloc_index
|
||||
call _dl_call_pltexit
|
||||
|
||||
/* Restore return registers. */
|
||||
movq LRV_RAX_OFFSET(%rsp), %rax
|
||||
movq LRV_RDX_OFFSET(%rsp), %rdx
|
||||
|
||||
movaps LRV_XMM0_OFFSET(%rsp), %xmm0
|
||||
movaps LRV_XMM1_OFFSET(%rsp), %xmm1
|
||||
|
||||
# ifdef HAVE_AVX_SUPPORT
|
||||
cmpl $0, L(have_avx)(%rip)
|
||||
js L(no_avx4)
|
||||
|
||||
/* Check if xmm0/xmm1 registers are changed by audit module. */
|
||||
vpcmpeqq (LRV_SIZE)(%rsp), %xmm0, %xmm2
|
||||
vpmovmskb %xmm2, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu LRV_VECTOR0_OFFSET(%rsp), %ymm0
|
||||
|
||||
1: vpcmpeqq (LRV_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm2
|
||||
vpmovmskb %xmm2, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu LRV_VECTOR1_OFFSET(%rsp), %ymm1
|
||||
|
||||
L(no_avx4):
|
||||
1:
|
||||
# endif
|
||||
|
||||
fldt LRV_ST1_OFFSET(%rsp)
|
||||
fldt LRV_ST0_OFFSET(%rsp)
|
||||
|
||||
movq %rbx, %rsp
|
||||
movq (%rsp), %rbx
|
||||
cfi_restore(rbx)
|
||||
cfi_def_cfa_register(%rsp)
|
||||
|
||||
addq $48, %rsp # Adjust the stack to the return value
|
||||
# (eats the reloc index and link_map)
|
||||
cfi_adjust_cfa_offset(-48)
|
||||
retq
|
||||
# undef RESTORE_AVX
|
||||
# include "dl-trampoline.h"
|
||||
|
||||
cfi_endproc
|
||||
.size _dl_runtime_profile, .-_dl_runtime_profile
|
||||
|
||||
269
sysdeps/x86_64/dl-trampoline.h
Normal file
269
sysdeps/x86_64/dl-trampoline.h
Normal file
@ -0,0 +1,269 @@
|
||||
/* Partial PLT profile trampoline to save and restore x86-64 vector
|
||||
registers.
|
||||
Copyright (C) 2009 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
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
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. */
|
||||
|
||||
#ifdef RESTORE_AVX
|
||||
/* This is to support AVX audit modules. */
|
||||
vmovdqu %ymm0, (LR_VECTOR_OFFSET)(%rsp)
|
||||
vmovdqu %ymm1, (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp)
|
||||
vmovdqu %ymm2, (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp)
|
||||
vmovdqu %ymm3, (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp)
|
||||
vmovdqu %ymm4, (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp)
|
||||
vmovdqu %ymm5, (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp)
|
||||
vmovdqu %ymm6, (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp)
|
||||
vmovdqu %ymm7, (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp)
|
||||
|
||||
/* Save xmm0-xmm7 registers to detect if any of them are
|
||||
changed by audit module. */
|
||||
vmovdqa %xmm0, (LR_SIZE)(%rsp)
|
||||
vmovdqa %xmm1, (LR_SIZE + XMM_SIZE)(%rsp)
|
||||
vmovdqa %xmm2, (LR_SIZE + XMM_SIZE*2)(%rsp)
|
||||
vmovdqa %xmm3, (LR_SIZE + XMM_SIZE*3)(%rsp)
|
||||
vmovdqa %xmm4, (LR_SIZE + XMM_SIZE*4)(%rsp)
|
||||
vmovdqa %xmm5, (LR_SIZE + XMM_SIZE*5)(%rsp)
|
||||
vmovdqa %xmm6, (LR_SIZE + XMM_SIZE*6)(%rsp)
|
||||
vmovdqa %xmm7, (LR_SIZE + XMM_SIZE*7)(%rsp)
|
||||
#endif
|
||||
|
||||
movq %rsp, %rcx # La_x86_64_regs pointer to %rcx.
|
||||
movq 48(%rbx), %rdx # Load return address if needed.
|
||||
movq 40(%rbx), %rsi # Copy args pushed by PLT in register.
|
||||
movq 32(%rbx), %rdi # %rdi: link_map, %rsi: reloc_index
|
||||
leaq 16(%rbx), %r8
|
||||
call _dl_profile_fixup # Call resolver.
|
||||
|
||||
movq %rax, %r11 # Save return value.
|
||||
|
||||
movq 8(%rbx), %rax # Get back register content.
|
||||
movq LR_RDX_OFFSET(%rsp), %rdx
|
||||
movq LR_R8_OFFSET(%rsp), %r8
|
||||
movq LR_R9_OFFSET(%rsp), %r9
|
||||
|
||||
movaps (LR_XMM_OFFSET)(%rsp), %xmm0
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE)(%rsp), %xmm1
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp), %xmm2
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp), %xmm3
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp), %xmm4
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp), %xmm5
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp), %xmm6
|
||||
movaps (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp), %xmm7
|
||||
|
||||
#ifdef RESTORE_AVX
|
||||
/* Check if any xmm0-xmm7 registers are changed by audit
|
||||
module. */
|
||||
vpcmpeqq (LR_SIZE)(%rsp), %xmm0, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
je 2f
|
||||
vmovdqa %xmm0, (LR_VECTOR_OFFSET)(%rsp)
|
||||
jmp 1f
|
||||
2: vmovdqu (LR_VECTOR_OFFSET)(%rsp), %ymm0
|
||||
vmovdqa %xmm0, (LR_XMM_OFFSET)(%rsp)
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
je 2f
|
||||
vmovdqa %xmm1, (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp)
|
||||
jmp 1f
|
||||
2: vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE)(%rsp), %ymm1
|
||||
vmovdqa %xmm1, (LR_XMM_OFFSET + XMM_SIZE)(%rsp)
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*2)(%rsp), %xmm2, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
je 2f
|
||||
vmovdqa %xmm2, (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp)
|
||||
jmp 1f
|
||||
2: vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*2)(%rsp), %ymm2
|
||||
vmovdqa %xmm2, (LR_XMM_OFFSET + XMM_SIZE*2)(%rsp)
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*3)(%rsp), %xmm3, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
je 2f
|
||||
vmovdqa %xmm3, (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp)
|
||||
jmp 1f
|
||||
2: vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*3)(%rsp), %ymm3
|
||||
vmovdqa %xmm3, (LR_XMM_OFFSET + XMM_SIZE*3)(%rsp)
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*4)(%rsp), %xmm4, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
je 2f
|
||||
vmovdqa %xmm4, (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp)
|
||||
jmp 1f
|
||||
2: vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*4)(%rsp), %ymm4
|
||||
vmovdqa %xmm4, (LR_XMM_OFFSET + XMM_SIZE*4)(%rsp)
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*5)(%rsp), %xmm5, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
je 2f
|
||||
vmovdqa %xmm5, (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp)
|
||||
jmp 1f
|
||||
2: vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*5)(%rsp), %ymm5
|
||||
vmovdqa %xmm5, (LR_XMM_OFFSET + XMM_SIZE*5)(%rsp)
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*6)(%rsp), %xmm6, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
je 2f
|
||||
vmovdqa %xmm6, (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp)
|
||||
jmp 1f
|
||||
2: vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*6)(%rsp), %ymm6
|
||||
vmovdqa %xmm6, (LR_XMM_OFFSET + XMM_SIZE*6)(%rsp)
|
||||
|
||||
1: vpcmpeqq (LR_SIZE + XMM_SIZE*7)(%rsp), %xmm7, %xmm8
|
||||
vpmovmskb %xmm8, %esi
|
||||
cmpl $0xffff, %esi
|
||||
je 2f
|
||||
vmovdqa %xmm7, (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp)
|
||||
jmp 1f
|
||||
2: vmovdqu (LR_VECTOR_OFFSET + VECTOR_SIZE*7)(%rsp), %ymm7
|
||||
vmovdqa %xmm7, (LR_XMM_OFFSET + XMM_SIZE*7)(%rsp)
|
||||
|
||||
1:
|
||||
#endif
|
||||
movq 16(%rbx), %r10 # Anything in framesize?
|
||||
testq %r10, %r10
|
||||
jns 3f
|
||||
|
||||
/* There's nothing in the frame size, so there
|
||||
will be no call to the _dl_call_pltexit. */
|
||||
|
||||
/* Get back registers content. */
|
||||
movq LR_RCX_OFFSET(%rsp), %rcx
|
||||
movq LR_RSI_OFFSET(%rsp), %rsi
|
||||
movq LR_RDI_OFFSET(%rsp), %rdi
|
||||
|
||||
movq %rbx, %rsp
|
||||
movq (%rsp), %rbx
|
||||
cfi_restore(rbx)
|
||||
cfi_def_cfa_register(%rsp)
|
||||
|
||||
addq $48, %rsp # Adjust the stack to the return value
|
||||
# (eats the reloc index and link_map)
|
||||
cfi_adjust_cfa_offset(-48)
|
||||
jmp *%r11 # Jump to function address.
|
||||
|
||||
3:
|
||||
cfi_adjust_cfa_offset(48)
|
||||
cfi_rel_offset(%rbx, 0)
|
||||
cfi_def_cfa_register(%rbx)
|
||||
|
||||
/* At this point we need to prepare new stack for the function
|
||||
which has to be called. We copy the original stack to a
|
||||
temporary buffer of the size specified by the 'framesize'
|
||||
returned from _dl_profile_fixup */
|
||||
|
||||
leaq LR_RSP_OFFSET(%rbx), %rsi # stack
|
||||
addq $8, %r10
|
||||
andq $0xfffffffffffffff0, %r10
|
||||
movq %r10, %rcx
|
||||
subq %r10, %rsp
|
||||
movq %rsp, %rdi
|
||||
shrq $3, %rcx
|
||||
rep
|
||||
movsq
|
||||
|
||||
movq 24(%rdi), %rcx # Get back register content.
|
||||
movq 32(%rdi), %rsi
|
||||
movq 40(%rdi), %rdi
|
||||
|
||||
call *%r11
|
||||
|
||||
mov 24(%rbx), %rsp # Drop the copied stack content
|
||||
|
||||
/* Now we have to prepare the La_x86_64_retval structure for the
|
||||
_dl_call_pltexit. The La_x86_64_regs is being pointed by rsp now,
|
||||
so we just need to allocate the sizeof(La_x86_64_retval) space on
|
||||
the stack, since the alignment has already been taken care of. */
|
||||
# ifdef RESTORE_AVX
|
||||
/* sizeof(La_x86_64_retval). Need extra space for 2 SSE
|
||||
registers to detect if xmm0/xmm1 registers are changed
|
||||
by audit module. */
|
||||
subq $(LRV_SIZE + XMM_SIZE*2), %rsp
|
||||
# else
|
||||
subq $LRV_SIZE, %rsp # sizeof(La_x86_64_retval)
|
||||
# endif
|
||||
movq %rsp, %rcx # La_x86_64_retval argument to %rcx.
|
||||
|
||||
/* Fill in the La_x86_64_retval structure. */
|
||||
movq %rax, LRV_RAX_OFFSET(%rcx)
|
||||
movq %rdx, LRV_RDX_OFFSET(%rcx)
|
||||
|
||||
movaps %xmm0, LRV_XMM0_OFFSET(%rcx)
|
||||
movaps %xmm1, LRV_XMM1_OFFSET(%rcx)
|
||||
|
||||
# ifdef RESTORE_AVX
|
||||
/* This is to support AVX audit modules. */
|
||||
vmovdqu %ymm0, LRV_VECTOR0_OFFSET(%rcx)
|
||||
vmovdqu %ymm1, LRV_VECTOR1_OFFSET(%rcx)
|
||||
|
||||
/* Save xmm0/xmm1 registers to detect if they are changed
|
||||
by audit module. */
|
||||
vmovdqa %xmm0, (LRV_SIZE)(%rcx)
|
||||
vmovdqa %xmm1, (LRV_SIZE + XMM_SIZE)(%rcx)
|
||||
# endif
|
||||
|
||||
fstpt LRV_ST0_OFFSET(%rcx)
|
||||
fstpt LRV_ST1_OFFSET(%rcx)
|
||||
|
||||
movq 24(%rbx), %rdx # La_x86_64_regs argument to %rdx.
|
||||
movq 40(%rbx), %rsi # Copy args pushed by PLT in register.
|
||||
movq 32(%rbx), %rdi # %rdi: link_map, %rsi: reloc_index
|
||||
call _dl_call_pltexit
|
||||
|
||||
/* Restore return registers. */
|
||||
movq LRV_RAX_OFFSET(%rsp), %rax
|
||||
movq LRV_RDX_OFFSET(%rsp), %rdx
|
||||
|
||||
movaps LRV_XMM0_OFFSET(%rsp), %xmm0
|
||||
movaps LRV_XMM1_OFFSET(%rsp), %xmm1
|
||||
|
||||
# ifdef RESTORE_AVX
|
||||
/* Check if xmm0/xmm1 registers are changed by audit module. */
|
||||
vpcmpeqq (LRV_SIZE)(%rsp), %xmm0, %xmm2
|
||||
vpmovmskb %xmm2, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu LRV_VECTOR0_OFFSET(%rsp), %ymm0
|
||||
|
||||
1: vpcmpeqq (LRV_SIZE + XMM_SIZE)(%rsp), %xmm1, %xmm2
|
||||
vpmovmskb %xmm2, %esi
|
||||
cmpl $0xffff, %esi
|
||||
jne 1f
|
||||
vmovdqu LRV_VECTOR1_OFFSET(%rsp), %ymm1
|
||||
|
||||
1:
|
||||
# endif
|
||||
|
||||
fldt LRV_ST1_OFFSET(%rsp)
|
||||
fldt LRV_ST0_OFFSET(%rsp)
|
||||
|
||||
movq %rbx, %rsp
|
||||
movq (%rsp), %rbx
|
||||
cfi_restore(rbx)
|
||||
cfi_def_cfa_register(%rsp)
|
||||
|
||||
addq $48, %rsp # Adjust the stack to the return value
|
||||
# (eats the reloc index and link_map)
|
||||
cfi_adjust_cfa_offset(-48)
|
||||
retq
|
||||
Loading…
x
Reference in New Issue
Block a user