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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-07-13 15:22:10 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-08-05 19:45:19 +0100 |
| commit | ccce788403ca63581a3ab08b619368223ed2502e (patch) | |
| tree | 1a3781958478fc0182027f175cd0c3c572e00021 | |
| parent | 5ef98a99001f411448fef8cdf87a9f1d40b3db32 (diff) | |
| download | glibc-ccce788403ca63581a3ab08b619368223ed2502e.tar.gz glibc-ccce788403ca63581a3ab08b619368223ed2502e.tar.xz glibc-ccce788403ca63581a3ab08b619368223ed2502e.zip | |
TODO(gprof): aarch64: morello: add gprof profiling support to asm
Assembly prologue code with mcount call for gprof instrumentation. TODO: untested, likely needs further runtime updates too.
| -rw-r--r-- | sysdeps/aarch64/sysdep.h | 42 |
1 files changed, 38 insertions, 4 deletions
diff --git a/sysdeps/aarch64/sysdep.h b/sysdeps/aarch64/sysdep.h index 6575503c8b..eb58ee340d 100644 --- a/sysdeps/aarch64/sysdep.h +++ b/sysdeps/aarch64/sysdep.h @@ -151,10 +151,44 @@ GNU_PROPERTY (FEATURE_1_AND, FEATURE_1_BTI) ASM_SIZE_DIRECTIVE(name) /* If compiled for profiling, call `mcount' at the start of each function. */ -#ifdef PROF -# ifdef __CHERI_PURE_CAPABILITY__ -# error mcount profiling is not supported with purecap ABI -# endif +#if defined PROF && defined __CHERI_PURE_CAPABILITY__ +/* Note: c9 must be preserved in var arg functions. */ +# define CALL_MCOUNT \ + stp c30, c9, [csp, #-160]!; \ + cfi_adjust_cfa_offset (160); \ + cfi_rel_offset (c30, 0); \ + cfi_rel_offset (c9, 16); \ + stp c0, c1, [csp, #32]; \ + cfi_rel_offset (c0, 32); \ + cfi_rel_offset (c1, 48); \ + stp c2, c3, [csp, #64]; \ + cfi_rel_offset (c2, 64); \ + cfi_rel_offset (c3, 80); \ + stp c4, c5, [csp, #96]; \ + cfi_rel_offset (c4, 96); \ + cfi_rel_offset (c5, 112); \ + stp c6, c7, [csp, #128]; \ + cfi_rel_offset (c6, 128); \ + cfi_rel_offset (c7, 144); \ + mov c0, c30; \ + bl mcount; \ + ldp c0, c1, [csp, #32]; \ + cfi_restore (c0); \ + cfi_restore (c1); \ + ldp c2, c3, [csp, #64]; \ + cfi_restore (c2); \ + cfi_restore (c3); \ + ldp c4, c5, [csp, #96]; \ + cfi_restore (c4); \ + cfi_restore (c5); \ + ldp c6, c7, [csp, #128]; \ + cfi_restore (c6); \ + cfi_restore (c7); \ + ldp c30, c9, [csp, #160]; \ + cfi_adjust_cfa_offset (-160); \ + cfi_restore (c30); \ + cfi_restore (c9); +#elif defined PROF && !defined __CHERI_PURE_CAPAILITY__ # define CALL_MCOUNT \ str x30, [sp, #-80]!; \ cfi_adjust_cfa_offset (80); \ |