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Differential D40054 Diff 121868 sys/cddl/dev/fbt/x86/fbt_isa.c

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sys/cddl/dev/fbt/x86/fbt_isa.c

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#define FBT_LEAVE 0xc9 #define FBT_LEAVE 0xc9
#ifdef __amd64__ #ifdef __amd64__
#define FBT_PATCHVAL 0xcc #define FBT_PATCHVAL 0xcc
#else #else
#define FBT_PATCHVAL 0xf0 #define FBT_PATCHVAL 0xf0
#endif #endif
#define FBT_AFRAMES 2
int int
fbt_invop(uintptr_t addr, struct trapframe *frame, uintptr_t scratch __unused) fbt_invop(uintptr_t addr, struct trapframe *frame, uintptr_t scratch __unused)
{ {
solaris_cpu_t *cpu; solaris_cpu_t *cpu;
uintptr_t *stack; uintptr_t *stack;
uintptr_t arg0, arg1, arg2, arg3, arg4, rval; uintptr_t arg0, arg1, arg2, arg3, arg4, rval;
fbt_probe_t *fbt; fbt_probe_t *fbt;
int8_t fbtrval; int8_t fbtrval;
▲ Show 20 Lines • Show All 161 Lines • ▼ Show 20 Lines if (!(instr[1] == FBT_MOVL_ESP_EBP0_V0 &&
!(instr[1] == FBT_MOVL_ESP_EBP0_V1 && !(instr[1] == FBT_MOVL_ESP_EBP0_V1 &&
instr[2] == FBT_MOVL_ESP_EBP1_V1)) instr[2] == FBT_MOVL_ESP_EBP1_V1))
return (0); return (0);
#endif #endif
fbt = malloc(sizeof (fbt_probe_t), M_FBT, M_WAITOK | M_ZERO); fbt = malloc(sizeof (fbt_probe_t), M_FBT, M_WAITOK | M_ZERO);
fbt->fbtp_name = name; fbt->fbtp_name = name;
fbt->fbtp_id = dtrace_probe_create(fbt_id, modname, fbt->fbtp_id = dtrace_probe_create(fbt_id, modname,
name, FBT_ENTRY, 3, fbt); name, FBT_ENTRY, FBT_AFRAMES, fbt);
fbt->fbtp_patchpoint = instr; fbt->fbtp_patchpoint = instr;
fbt->fbtp_ctl = lf; fbt->fbtp_ctl = lf;
fbt->fbtp_loadcnt = lf->loadcnt; fbt->fbtp_loadcnt = lf->loadcnt;
fbt->fbtp_rval = DTRACE_INVOP_PUSHL_EBP; fbt->fbtp_rval = DTRACE_INVOP_PUSHL_EBP;
fbt->fbtp_savedval = *instr; fbt->fbtp_savedval = *instr;
fbt->fbtp_patchval = FBT_PATCHVAL; fbt->fbtp_patchval = FBT_PATCHVAL;
fbt->fbtp_symindx = symindx; fbt->fbtp_symindx = symindx;
▲ Show 20 Lines • Show All 77 Lines • ▼ Show 20 Lines#endif
/* /*
* We have a winner! * We have a winner!
*/ */
fbt = malloc(sizeof (fbt_probe_t), M_FBT, M_WAITOK | M_ZERO); fbt = malloc(sizeof (fbt_probe_t), M_FBT, M_WAITOK | M_ZERO);
fbt->fbtp_name = name; fbt->fbtp_name = name;
if (retfbt == NULL) { if (retfbt == NULL) {
fbt->fbtp_id = dtrace_probe_create(fbt_id, modname, fbt->fbtp_id = dtrace_probe_create(fbt_id, modname,
name, FBT_RETURN, 3, fbt); name, FBT_RETURN, FBT_AFRAMES, fbt);
} else { } else {
retfbt->fbtp_probenext = fbt; retfbt->fbtp_probenext = fbt;
fbt->fbtp_id = retfbt->fbtp_id; fbt->fbtp_id = retfbt->fbtp_id;
} }
retfbt = fbt; retfbt = fbt;
fbt->fbtp_patchpoint = instr; fbt->fbtp_patchpoint = instr;
fbt->fbtp_ctl = lf; fbt->fbtp_ctl = lf;
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