diff options
Diffstat (limited to 'tools/perf/arch/x86/annotate')
-rw-r--r-- | tools/perf/arch/x86/annotate/instructions.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/annotate/instructions.c b/tools/perf/arch/x86/annotate/instructions.c index c1625f256df3..d84b72063a30 100644 --- a/tools/perf/arch/x86/annotate/instructions.c +++ b/tools/perf/arch/x86/annotate/instructions.c @@ -76,3 +76,49 @@ static struct ins x86__instructions[] = { { .name = "xbeginq", .ops = &jump_ops, }, { .name = "retq", .ops = &ret_ops, }, }; + +static bool x86__ins_is_fused(struct arch *arch, const char *ins1, + const char *ins2) +{ + if (arch->family != 6 || arch->model < 0x1e || strstr(ins2, "jmp")) + return false; + + if (arch->model == 0x1e) { + /* Nehalem */ + if ((strstr(ins1, "cmp") && !strstr(ins1, "xchg")) || + strstr(ins1, "test")) { + return true; + } + } else { + /* Newer platform */ + if ((strstr(ins1, "cmp") && !strstr(ins1, "xchg")) || + strstr(ins1, "test") || + strstr(ins1, "add") || + strstr(ins1, "sub") || + strstr(ins1, "and") || + strstr(ins1, "inc") || + strstr(ins1, "dec")) { + return true; + } + } + + return false; +} + +static int x86__cpuid_parse(struct arch *arch, char *cpuid) +{ + unsigned int family, model, stepping; + int ret; + + /* + * cpuid = "GenuineIntel,family,model,stepping" + */ + ret = sscanf(cpuid, "%*[^,],%u,%u,%u", &family, &model, &stepping); + if (ret == 3) { + arch->family = family; + arch->model = model; + return 0; + } + + return -1; +} |