diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/jitdump.c | 57 | ||||
| -rw-r--r-- | tools/perf/util/jitdump.h | 12 |
2 files changed, 66 insertions, 3 deletions
diff --git a/tools/perf/util/jitdump.c b/tools/perf/util/jitdump.c index 75b66bbf8429..9bae66cc78f2 100644 --- a/tools/perf/util/jitdump.c +++ b/tools/perf/util/jitdump.c @@ -37,6 +37,10 @@ struct jit_buf_desc { bool needs_bswap; /* handles cross-endianess */ bool use_arch_timestamp; void *debug_data; + void *unwinding_data; + uint64_t unwinding_size; + uint64_t unwinding_mapped_size; + uint64_t eh_frame_hdr_size; size_t nr_debug_entries; uint32_t code_load_count; u64 bytes_written; @@ -295,6 +299,13 @@ jit_get_next_entry(struct jit_buf_desc *jd) } } break; + case JIT_CODE_UNWINDING_INFO: + if (jd->needs_bswap) { + jr->unwinding.unwinding_size = bswap_64(jr->unwinding.unwinding_size); + jr->unwinding.eh_frame_hdr_size = bswap_64(jr->unwinding.eh_frame_hdr_size); + jr->unwinding.mapped_size = bswap_64(jr->unwinding.mapped_size); + } + break; case JIT_CODE_CLOSE: break; case JIT_CODE_LOAD: @@ -370,7 +381,7 @@ static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr) u16 idr_size; const char *sym; uint32_t count; - int ret, csize; + int ret, csize, usize; pid_t pid, tid; struct { u32 pid, tid; @@ -380,6 +391,7 @@ static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr) pid = jr->load.pid; tid = jr->load.tid; csize = jr->load.code_size; + usize = jd->unwinding_mapped_size; addr = jr->load.code_addr; sym = (void *)((unsigned long)jr + sizeof(jr->load)); code = (unsigned long)jr + jr->load.p.total_size - csize; @@ -408,6 +420,14 @@ static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr) jd->nr_debug_entries = 0; } + if (jd->unwinding_data && jd->eh_frame_hdr_size) { + free(jd->unwinding_data); + jd->unwinding_data = NULL; + jd->eh_frame_hdr_size = 0; + jd->unwinding_mapped_size = 0; + jd->unwinding_size = 0; + } + if (ret) { free(event); return -1; @@ -422,7 +442,7 @@ static int jit_repipe_code_load(struct jit_buf_desc *jd, union jr_entry *jr) event->mmap2.pgoff = GEN_ELF_TEXT_OFFSET; event->mmap2.start = addr; - event->mmap2.len = csize; + event->mmap2.len = usize ? ALIGN_8(csize) + usize : csize; event->mmap2.pid = pid; event->mmap2.tid = tid; event->mmap2.ino = st.st_ino; @@ -473,6 +493,7 @@ static int jit_repipe_code_move(struct jit_buf_desc *jd, union jr_entry *jr) char *filename; size_t size; struct stat st; + int usize; u16 idr_size; int ret; pid_t pid, tid; @@ -483,6 +504,7 @@ static int jit_repipe_code_move(struct jit_buf_desc *jd, union jr_entry *jr) pid = jr->move.pid; tid = jr->move.tid; + usize = jd->unwinding_mapped_size; idr_size = jd->machine->id_hdr_size; /* @@ -511,7 +533,8 @@ static int jit_repipe_code_move(struct jit_buf_desc *jd, union jr_entry *jr) (sizeof(event->mmap2.filename) - size) + idr_size); event->mmap2.pgoff = GEN_ELF_TEXT_OFFSET; event->mmap2.start = jr->move.new_code_addr; - event->mmap2.len = jr->move.code_size; + event->mmap2.len = usize ? ALIGN_8(jr->move.code_size) + usize + : jr->move.code_size; event->mmap2.pid = pid; event->mmap2.tid = tid; event->mmap2.ino = st.st_ino; @@ -578,6 +601,31 @@ static int jit_repipe_debug_info(struct jit_buf_desc *jd, union jr_entry *jr) } static int +jit_repipe_unwinding_info(struct jit_buf_desc *jd, union jr_entry *jr) +{ + void *unwinding_data; + uint32_t unwinding_data_size; + + if (!(jd && jr)) + return -1; + + unwinding_data_size = jr->prefix.total_size - sizeof(jr->unwinding); + unwinding_data = malloc(unwinding_data_size); + if (!unwinding_data) + return -1; + + memcpy(unwinding_data, &jr->unwinding.unwinding_data, + unwinding_data_size); + + jd->eh_frame_hdr_size = jr->unwinding.eh_frame_hdr_size; + jd->unwinding_size = jr->unwinding.unwinding_size; + jd->unwinding_mapped_size = jr->unwinding.mapped_size; + jd->unwinding_data = unwinding_data; + + return 0; +} + +static int jit_process_dump(struct jit_buf_desc *jd) { union jr_entry *jr; @@ -594,6 +642,9 @@ jit_process_dump(struct jit_buf_desc *jd) case JIT_CODE_DEBUG_INFO: ret = jit_repipe_debug_info(jd, jr); break; + case JIT_CODE_UNWINDING_INFO: + ret = jit_repipe_unwinding_info(jd, jr); + break; default: ret = 0; continue; diff --git a/tools/perf/util/jitdump.h b/tools/perf/util/jitdump.h index bcacd20d0c1c..c6b9b67f43bf 100644 --- a/tools/perf/util/jitdump.h +++ b/tools/perf/util/jitdump.h @@ -19,6 +19,7 @@ #define JITHEADER_MAGIC_SW 0x4454694A #define PADDING_8ALIGNED(x) ((((x) + 7) & 7) ^ 7) +#define ALIGN_8(x) (((x) + 7) & (~7)) #define JITHEADER_VERSION 1 @@ -48,6 +49,7 @@ enum jit_record_type { JIT_CODE_MOVE = 1, JIT_CODE_DEBUG_INFO = 2, JIT_CODE_CLOSE = 3, + JIT_CODE_UNWINDING_INFO = 4, JIT_CODE_MAX, }; @@ -101,12 +103,22 @@ struct jr_code_debug_info { struct debug_entry entries[0]; }; +struct jr_code_unwinding_info { + struct jr_prefix p; + + uint64_t unwinding_size; + uint64_t eh_frame_hdr_size; + uint64_t mapped_size; + const char unwinding_data[0]; +}; + union jr_entry { struct jr_code_debug_info info; struct jr_code_close close; struct jr_code_load load; struct jr_code_move move; struct jr_prefix prefix; + struct jr_code_unwinding_info unwinding; }; static inline struct debug_entry * |
