This patch set is to restart the upstreaming for CoreSight disassembly script [1], the python script can be used to dump assembly, source line and symbols so it can be easier for humans inspecting.
The first patch changes python script engine to expose more information for DSO and maps, so it's helpful for disassembly with objdump program.
The second patch is to introduce the python script for CoreSight trace data disassembly for branch samples. It also can dump source line and symbol info for instruction samples.
This patch set has been tested on Arm64 Juno board:
# perf script -s scripts/python/arm-cs-trace-disasm.py ... main 6728/6728 [004] 0.000000000 main+0x40 /root/coresight_test/main.c for (i = 0; i < 10000; i++) { main 6728/6728 [004] 0.000000000 main+0x20 /root/coresight_test/main.c val = lib_loop_test(100); main 6728/6728 [004] 0.000000000 lib_loop_test@plt+0xc /root/coresight_test/main main 6728/6728 [004] 0.000000000 lib_loop_test+0xc /root/coresight_test/libcstest.c for (i = 0; i < 5; i++) main 6728/6728 [004] 0.000000000 lib_loop_test+0x30 main 6728/6728 [004] 0.000000000 lib_loop_test+0x30 main 6728/6728 [004] 0.000000000 lib_loop_test+0x30 main 6728/6728 [004] 0.000000000 lib_loop_test+0x30 main 6728/6728 [004] 0.000000000 lib_loop_test+0x30 main 6728/6728 [004] 0.000000000 lib_loop_test+0x3c /root/coresight_test/libcstest.c }
# perf script -s scripts/python/arm-cs-trace-disasm.py -- -d llvm-objdump-11 -k ./vmlinux ARM CoreSight Trace Data Assembler Dump ffff800008eb3198 <etm4_enable_hw>: ffff800008eb3310: c0 38 00 35 cbnz w0, 0xffff800008eb3a28 <etm4_enable_hw+0x890> ffff800008eb3314: 9f 3f 03 d5 dsb sy ffff800008eb3318: df 3f 03 d5 isb ffff800008eb331c: f5 5b 42 a9 ldp x21, x22, [sp, #32] ffff800008eb3320: fb 73 45 a9 ldp x27, x28, [sp, #80] ffff800008eb3324: e0 82 40 39 ldrb w0, [x23, #32] ffff800008eb3328: 60 00 00 34 cbz w0, 0xffff800008eb3334 <etm4_enable_hw+0x19c> ffff800008eb332c: e0 03 19 aa mov x0, x25 ffff800008eb3330: 8c fe ff 97 bl 0xffff800008eb2d60 <etm4_cs_lock.isra.0.part.0> main 6055/6055 [004] 0.000000000 etm4_enable_hw+0x198 [kernel.kallsyms] ffff800008eb2d60 <etm4_cs_lock.isra.0.part.0>: ffff800008eb2d60: 1f 20 03 d5 nop ffff800008eb2d64: 1f 20 03 d5 nop ffff800008eb2d68: 3f 23 03 d5 hint #25 ffff800008eb2d6c: 00 00 40 f9 ldr x0, [x0] ffff800008eb2d70: 9f 3f 03 d5 dsb sy ffff800008eb2d74: 00 c0 3e 91 add x0, x0, #4016 ffff800008eb2d78: 1f 00 00 b9 str wzr, [x0] ffff800008eb2d7c: bf 23 03 d5 hint #29 ffff800008eb2d80: c0 03 5f d6 ret main 6055/6055 [004] 0.000000000 etm4_cs_lock.isra.0.part.0+0x20
# perf script -s scripts/python/arm-cs-trace-disasm.py -- -d objdump -k ./vmlinux ARM CoreSight Trace Data Assembler Dump ffff800008eb3310 <etm4_enable_hw+0x178>: ffff800008eb3310: 350038c0 cbnz w0, ffff800008eb3a28 <etm4_enable_hw+0x890> ffff800008eb3314: d5033f9f dsb sy ffff800008eb3318: d5033fdf isb ffff800008eb331c: a9425bf5 ldp x21, x22, [sp, #32] ffff800008eb3320: a94573fb ldp x27, x28, [sp, #80] ffff800008eb3324: 394082e0 ldrb w0, [x23, #32] ffff800008eb3328: 34000060 cbz w0, ffff800008eb3334 <etm4_enable_hw+0x19c> ffff800008eb332c: aa1903e0 mov x0, x25 ffff800008eb3330: 97fffe8c bl ffff800008eb2d60 <etm4_cs_lock.isra.0.part.0> main 6055/6055 [004] 0.000000000 etm4_enable_hw+0x198 [kernel.kallsyms] ffff800008eb2d60 <etm4_cs_lock.isra.0.part.0>: ffff800008eb2d60: d503201f nop ffff800008eb2d64: d503201f nop ffff800008eb2d68: d503233f paciasp ffff800008eb2d6c: f9400000 ldr x0, [x0] ffff800008eb2d70: d5033f9f dsb sy ffff800008eb2d74: 913ec000 add x0, x0, #0xfb0 ffff800008eb2d78: b900001f str wzr, [x0] ffff800008eb2d7c: d50323bf autiasp ffff800008eb2d80: d65f03c0 ret main 6055/6055 [004] 0.000000000 etm4_cs_lock.isra.0.part.0+0x20
[1] https://lists.linaro.org/archives/list/coresight@lists.linaro.org/thread/GIJ...
Changes from v4: * Enhanced python script engine for DSO and map infos; * Rewrote the python script, added support for symbol and source line dumping.
Leo Yan (2): perf scripting python: Expose dso and map information perf scripts python: Support Arm CoreSight trace data disassembly
.../scripts/python/arm-cs-trace-disasm.py | 275 ++++++++++++++++++ .../scripting-engines/trace-event-python.c | 21 +- 2 files changed, 292 insertions(+), 4 deletions(-) create mode 100755 tools/perf/scripts/python/arm-cs-trace-disasm.py