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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-06 12:30:52 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-06 12:30:52 -0400
commit4aed2fd8e3181fea7c09ba79cf64e7e3f4413bf9 (patch)
tree1f69733e5daab4915a76a41de0e4d1dc61e12cfb /arch/x86/mm/pf_in.c
parent3a3527b6461b1298cc53ce72f336346739297ac8 (diff)
parentfc9ea5a1e53ee54f681e226d735008e2a6f8f470 (diff)
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (162 commits) tracing/kprobes: unregister_trace_probe needs to be called under mutex perf: expose event__process function perf events: Fix mmap offset determination perf, powerpc: fsl_emb: Restore setting perf_sample_data.period perf, powerpc: Convert the FSL driver to use local64_t perf tools: Don't keep unreferenced maps when unmaps are detected perf session: Invalidate last_match when removing threads from rb_tree perf session: Free the ref_reloc_sym memory at the right place x86,mmiotrace: Add support for tracing STOS instruction perf, sched migration: Librarize task states and event headers helpers perf, sched migration: Librarize the GUI class perf, sched migration: Make the GUI class client agnostic perf, sched migration: Make it vertically scrollable perf, sched migration: Parameterize cpu height and spacing perf, sched migration: Fix key bindings perf, sched migration: Ignore unhandled task states perf, sched migration: Handle ignored migrate out events perf: New migration tool overview tracing: Drop cpparg() macro perf: Use tracepoint_synchronize_unregister() to flush any pending tracepoint call ... Fix up trivial conflicts in Makefile and drivers/cpufreq/cpufreq.c
Diffstat (limited to 'arch/x86/mm/pf_in.c')
-rw-r--r--arch/x86/mm/pf_in.c30
1 files changed, 17 insertions, 13 deletions
diff --git a/arch/x86/mm/pf_in.c b/arch/x86/mm/pf_in.c
index 308e32570d84..38e6d174c497 100644
--- a/arch/x86/mm/pf_in.c
+++ b/arch/x86/mm/pf_in.c
@@ -40,16 +40,16 @@ static unsigned char prefix_codes[] = {
40static unsigned int reg_rop[] = { 40static unsigned int reg_rop[] = {
41 0x8A, 0x8B, 0xB60F, 0xB70F, 0xBE0F, 0xBF0F 41 0x8A, 0x8B, 0xB60F, 0xB70F, 0xBE0F, 0xBF0F
42}; 42};
43static unsigned int reg_wop[] = { 0x88, 0x89 }; 43static unsigned int reg_wop[] = { 0x88, 0x89, 0xAA, 0xAB };
44static unsigned int imm_wop[] = { 0xC6, 0xC7 }; 44static unsigned int imm_wop[] = { 0xC6, 0xC7 };
45/* IA32 Manual 3, 3-432*/ 45/* IA32 Manual 3, 3-432*/
46static unsigned int rw8[] = { 0x88, 0x8A, 0xC6 }; 46static unsigned int rw8[] = { 0x88, 0x8A, 0xC6, 0xAA };
47static unsigned int rw32[] = { 47static unsigned int rw32[] = {
48 0x89, 0x8B, 0xC7, 0xB60F, 0xB70F, 0xBE0F, 0xBF0F 48 0x89, 0x8B, 0xC7, 0xB60F, 0xB70F, 0xBE0F, 0xBF0F, 0xAB
49}; 49};
50static unsigned int mw8[] = { 0x88, 0x8A, 0xC6, 0xB60F, 0xBE0F }; 50static unsigned int mw8[] = { 0x88, 0x8A, 0xC6, 0xB60F, 0xBE0F, 0xAA };
51static unsigned int mw16[] = { 0xB70F, 0xBF0F }; 51static unsigned int mw16[] = { 0xB70F, 0xBF0F };
52static unsigned int mw32[] = { 0x89, 0x8B, 0xC7 }; 52static unsigned int mw32[] = { 0x89, 0x8B, 0xC7, 0xAB };
53static unsigned int mw64[] = {}; 53static unsigned int mw64[] = {};
54#else /* not __i386__ */ 54#else /* not __i386__ */
55static unsigned char prefix_codes[] = { 55static unsigned char prefix_codes[] = {
@@ -63,20 +63,20 @@ static unsigned char prefix_codes[] = {
63static unsigned int reg_rop[] = { 63static unsigned int reg_rop[] = {
64 0x8A, 0x8B, 0xB60F, 0xB70F, 0xBE0F, 0xBF0F 64 0x8A, 0x8B, 0xB60F, 0xB70F, 0xBE0F, 0xBF0F
65}; 65};
66static unsigned int reg_wop[] = { 0x88, 0x89 }; 66static unsigned int reg_wop[] = { 0x88, 0x89, 0xAA, 0xAB };
67static unsigned int imm_wop[] = { 0xC6, 0xC7 }; 67static unsigned int imm_wop[] = { 0xC6, 0xC7 };
68static unsigned int rw8[] = { 0xC6, 0x88, 0x8A }; 68static unsigned int rw8[] = { 0xC6, 0x88, 0x8A, 0xAA };
69static unsigned int rw32[] = { 69static unsigned int rw32[] = {
70 0xC7, 0x89, 0x8B, 0xB60F, 0xB70F, 0xBE0F, 0xBF0F 70 0xC7, 0x89, 0x8B, 0xB60F, 0xB70F, 0xBE0F, 0xBF0F, 0xAB
71}; 71};
72/* 8 bit only */ 72/* 8 bit only */
73static unsigned int mw8[] = { 0xC6, 0x88, 0x8A, 0xB60F, 0xBE0F }; 73static unsigned int mw8[] = { 0xC6, 0x88, 0x8A, 0xB60F, 0xBE0F, 0xAA };
74/* 16 bit only */ 74/* 16 bit only */
75static unsigned int mw16[] = { 0xB70F, 0xBF0F }; 75static unsigned int mw16[] = { 0xB70F, 0xBF0F };
76/* 16 or 32 bit */ 76/* 16 or 32 bit */
77static unsigned int mw32[] = { 0xC7 }; 77static unsigned int mw32[] = { 0xC7 };
78/* 16, 32 or 64 bit */ 78/* 16, 32 or 64 bit */
79static unsigned int mw64[] = { 0x89, 0x8B }; 79static unsigned int mw64[] = { 0x89, 0x8B, 0xAB };
80#endif /* not __i386__ */ 80#endif /* not __i386__ */
81 81
82struct prefix_bits { 82struct prefix_bits {
@@ -410,7 +410,6 @@ static unsigned long *get_reg_w32(int no, struct pt_regs *regs)
410unsigned long get_ins_reg_val(unsigned long ins_addr, struct pt_regs *regs) 410unsigned long get_ins_reg_val(unsigned long ins_addr, struct pt_regs *regs)
411{ 411{
412 unsigned int opcode; 412 unsigned int opcode;
413 unsigned char mod_rm;
414 int reg; 413 int reg;
415 unsigned char *p; 414 unsigned char *p;
416 struct prefix_bits prf; 415 struct prefix_bits prf;
@@ -437,8 +436,13 @@ unsigned long get_ins_reg_val(unsigned long ins_addr, struct pt_regs *regs)
437 goto err; 436 goto err;
438 437
439do_work: 438do_work:
440 mod_rm = *p; 439 /* for STOS, source register is fixed */
441 reg = ((mod_rm >> 3) & 0x7) | (prf.rexr << 3); 440 if (opcode == 0xAA || opcode == 0xAB) {
441 reg = arg_AX;
442 } else {
443 unsigned char mod_rm = *p;
444 reg = ((mod_rm >> 3) & 0x7) | (prf.rexr << 3);
445 }
442 switch (get_ins_reg_width(ins_addr)) { 446 switch (get_ins_reg_width(ins_addr)) {
443 case 1: 447 case 1:
444 return *get_reg_w8(reg, prf.rex, regs); 448 return *get_reg_w8(reg, prf.rex, regs);