diff options
Diffstat (limited to 'tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c')
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c | 43 |
1 files changed, 17 insertions, 26 deletions
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c index af9710622a1f..bccb988a7a44 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.c @@ -8,7 +8,9 @@ #include <string.h> #include <endian.h> #include <byteswap.h> +#include <linux/kernel.h> #include <linux/compiler.h> +#include <asm-generic/unaligned.h> #include "intel-pt-pkt-decoder.h" @@ -17,17 +19,11 @@ #define BIT63 ((uint64_t)1 << 63) #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ -#define le16_to_cpu bswap_16 -#define le32_to_cpu bswap_32 -#define le64_to_cpu bswap_64 #define memcpy_le64(d, s, n) do { \ memcpy((d), (s), (n)); \ *(d) = le64_to_cpu(*(d)); \ } while (0) #else -#define le16_to_cpu -#define le32_to_cpu -#define le64_to_cpu #define memcpy_le64 memcpy #endif @@ -83,7 +79,7 @@ static int intel_pt_get_long_tnt(const unsigned char *buf, size_t len, if (len < 8) return INTEL_PT_NEED_MORE_BYTES; - payload = le64_to_cpu(*(uint64_t *)buf); + payload = get_unaligned_le64(buf); for (count = 47; count; count--) { if (payload & BIT63) @@ -124,26 +120,21 @@ static int intel_pt_get_cbr(const unsigned char *buf, size_t len, if (len < 4) return INTEL_PT_NEED_MORE_BYTES; packet->type = INTEL_PT_CBR; - packet->payload = le16_to_cpu(*(uint16_t *)(buf + 2)); + packet->payload = get_unaligned_le16(buf + 2); return 4; } static int intel_pt_get_vmcs(const unsigned char *buf, size_t len, struct intel_pt_pkt *packet) { - unsigned int count = (52 - 5) >> 3; - - if (count < 1 || count > 7) - return INTEL_PT_BAD_PACKET; - - if (len < count + 2) + if (len < 7) return INTEL_PT_NEED_MORE_BYTES; packet->type = INTEL_PT_VMCS; - packet->count = count; - memcpy_le64(&packet->payload, buf + 2, count); + packet->count = 5; + memcpy_le64(&packet->payload, buf + 2, 5); - return count + 2; + return 7; } static int intel_pt_get_ovf(struct intel_pt_pkt *packet) @@ -199,7 +190,7 @@ static int intel_pt_get_mnt(const unsigned char *buf, size_t len, if (len < 11) return INTEL_PT_NEED_MORE_BYTES; packet->type = INTEL_PT_MNT; - memcpy_le64(&packet->payload, buf + 3, 8); + packet->payload = get_unaligned_le64(buf + 3); return 11; } @@ -228,12 +219,12 @@ static int intel_pt_get_ptwrite(const unsigned char *buf, size_t len, case 0: if (len < 6) return INTEL_PT_NEED_MORE_BYTES; - packet->payload = le32_to_cpu(*(uint32_t *)(buf + 2)); + packet->payload = get_unaligned_le32(buf + 2); return 6; case 1: if (len < 10) return INTEL_PT_NEED_MORE_BYTES; - packet->payload = le64_to_cpu(*(uint64_t *)(buf + 2)); + packet->payload = get_unaligned_le64(buf + 2); return 10; default: return INTEL_PT_BAD_PACKET; @@ -258,7 +249,7 @@ static int intel_pt_get_mwait(const unsigned char *buf, size_t len, if (len < 10) return INTEL_PT_NEED_MORE_BYTES; packet->type = INTEL_PT_MWAIT; - packet->payload = le64_to_cpu(*(uint64_t *)(buf + 2)); + packet->payload = get_unaligned_le64(buf + 2); return 10; } @@ -311,7 +302,7 @@ static int intel_pt_get_bip_8(const unsigned char *buf, size_t len, return INTEL_PT_NEED_MORE_BYTES; packet->type = INTEL_PT_BIP; packet->count = buf[0] >> 3; - memcpy_le64(&packet->payload, buf + 1, 8); + packet->payload = get_unaligned_le64(buf + 1); return 9; } @@ -350,7 +341,7 @@ static int intel_pt_get_evd(const unsigned char *buf, size_t len, packet->type = INTEL_PT_EVD; packet->count = buf[2] & 0x3f; packet->payload = buf[3]; - memcpy_le64(&packet->payload, buf + 3, 8); + packet->payload = get_unaligned_le64(buf + 3); return 11; } @@ -465,13 +456,13 @@ static int intel_pt_get_ip(enum intel_pt_pkt_type type, unsigned int byte, if (len < 3) return INTEL_PT_NEED_MORE_BYTES; ip_len = 2; - packet->payload = le16_to_cpu(*(uint16_t *)(buf + 1)); + packet->payload = get_unaligned_le16(buf + 1); break; case 2: if (len < 5) return INTEL_PT_NEED_MORE_BYTES; ip_len = 4; - packet->payload = le32_to_cpu(*(uint32_t *)(buf + 1)); + packet->payload = get_unaligned_le32(buf + 1); break; case 3: case 4: @@ -484,7 +475,7 @@ static int intel_pt_get_ip(enum intel_pt_pkt_type type, unsigned int byte, if (len < 9) return INTEL_PT_NEED_MORE_BYTES; ip_len = 8; - packet->payload = le64_to_cpu(*(uint64_t *)(buf + 1)); + packet->payload = get_unaligned_le64(buf + 1); break; default: return INTEL_PT_BAD_PACKET; |