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0eee65899b
The linker or post-link optimizer can create an ELF image with multiple executable segments each of which will be loaded separately at run time. This breaks the assumption of llvm-profgen that currently only supports one base load address. What it ends up with is that the subsequent mmap events will be treated as an overwrite of the first mmap event which will in turn screw up address mapping. While it is non-trivial to support multiple separate load addresses and given that on x64 those segments will always be loaded at consecutive addresses (though via separate mmap sys calls), I'm adding an error checking logic to bail out if that's violated and keep using a single load address which is the address of the first executable segment. Also changing the disassembly output from printing section offset to printing the virtual address instead, which matches the behavior of objdump. Differential Revision: https://reviews.llvm.org/D103178
32 lines
3.5 KiB
Plaintext
32 lines
3.5 KiB
Plaintext
; REQUIRES: x86-registered-target
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; RUN: llvm-profgen --perfscript=%s --binary=%S/Inputs/inline-cs-pseudoprobe.perfbin --output=%t --show-mmap-events | FileCheck %s
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PERF_RECORD_MMAP2 2580483/2580483: [0x400000(0x1000) @ 0 103:01 539973862 1972407324]: r-xp /home/a.out
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PERF_RECORD_MMAP2 2580483/2580483: [0x7f2505b40000(0x224000) @ 0 08:04 19532214 4169021329]: r-xp /usr/lib64/ld-2.17.so
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PERF_RECORD_MMAP2 2580483/2580483: [0x7ffe88097000(0x1000) @ 0 00:00 0 0]: r-xp [vdso]
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PERF_RECORD_MMAP2 2580483/2580483: [0x7f2505d56000(0xa000) @ 0 08:04 19530021 4190740662]: r-xp /usr/lib64/perf_fopen_hook.so
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PERF_RECORD_MMAP2 2580483/2580483: [0x7f250593c000(0x204000) @ 0 08:04 19532229 3585508847]: r-xp /usr/lib64/libdl-2.17.so
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PERF_RECORD_MMAP2 2580483/2580483: [0x7f250556e000(0x3ce000) @ 0 08:04 19532221 4003737677]: r-xp /usr/lib64/libc-2.17.so
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PERF_RECORD_MMAP2 2580483/2580483: [0x7f2505358000(0x216000) @ 0 08:04 19534595 2609212015]: r-xp /usr/lib64/libz.so.1.2.7
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7f2505b49811
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0x7f2505b49811/0x7f2505b509f0/P/-/-/0 0x7f2505b4974c/0x7f2505b4975b/P/-/-/0 0x7f2505b49837/0x7f2505b49720/P/-/-/0 0x7f2505b50a5a/0x7f2505b49816/P/-/-/0 0x7f2505b50a27/0x7f2505b50a50/P/-/-/0 0x7f2505b50a36/0x7f2505b50a20/P/-/-/0 0x7f2505b59dd0/0x7f2505b50a34/P/-/-/0 0x7f2505b59db4/0x7f2505b59dc3/P/-/-/0 0x7f2505b50a2f/0x7f2505b59db0/P/-/-/0 0x7f2505b50a15/0x7f2505b50a29/P/-/-/0 0x7f2505b59dd0/0x7f2505b50a05/P/-/-/0 0x7f2505b59db4/0x7f2505b59dc3/P/-/-/0 0x7f2505b50a00/0x7f2505b59db0/P/-/-/0 0x7f2505b49811/0x7f2505b509f0/P/-/-/0 0x7f2505b4974c/0x7f2505b4975b/P/-/-/0 0x7f2505b4a08a/0x7f2505b496a0/P/-/-/0
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PERF_RECORD_MMAP2 2580483/2580483: [0x7f2505d56000(0x8000) @ 0 08:04 19530021 4190740662]: r-xp /usr/lib64/perf_fopen_hook.so
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4006b1
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0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0
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PERF_RECORD_MMAP2 2580483/2580483: [0x7f2505156000(0x202000) @ 0 103:01 539962022 734061270]: r-xp /home/hoy/test/dlopen/helper.so
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4006b1
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0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0 0x4006b1/0x4006a0/P/-/-/0
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PERF_RECORD_MMAP2 2580483/2580483: [0x7f2505156000(0x202000) @ 0 103:01 539962022 734061270]: r-xp /home/hoy/test/dlopen/helper.so
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; CHECK: Mmap: Binary /home/a.out loaded at 0x400000
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; CHECK: Mmap: Binary /usr/lib64/ld-2.17.so loaded at 0x7f2505b40000
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; CHECK: Mmap: Binary [vdso] loaded at 0x7ffe88097000
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; CHECK: Mmap: Binary /usr/lib64/perf_fopen_hook.so loaded at 0x7f2505d56000
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; CHECK: Mmap: Binary /usr/lib64/libdl-2.17.so loaded at 0x7f250593c000
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; CHECK: Mmap: Binary /usr/lib64/libc-2.17.so loaded at 0x7f250556e000
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; CHECK: Mmap: Binary /usr/lib64/libz.so.1.2.7 loaded at 0x7f2505358000
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; CHECK: Mmap: Binary /usr/lib64/perf_fopen_hook.so loaded at 0x7f2505d56000
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; CHECK: Mmap: Binary /home/hoy/test/dlopen/helper.so loaded at 0x7f2505156000
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; CHECK: Mmap: Binary /home/hoy/test/dlopen/helper.so loaded at 0x7f2505156000
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