diff options
Diffstat (limited to 'libc/ports/sysdeps/aarch64/sysdep.h')
| -rw-r--r-- | libc/ports/sysdeps/aarch64/sysdep.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libc/ports/sysdeps/aarch64/sysdep.h b/libc/ports/sysdeps/aarch64/sysdep.h index 6b75ada14..9349471e3 100644 --- a/libc/ports/sysdeps/aarch64/sysdep.h +++ b/libc/ports/sysdeps/aarch64/sysdep.h @@ -42,6 +42,22 @@ cfi_startproc; \ CALL_MCOUNT +/* Define an entry point visible from C with a specified alignment and + pre-padding with NOPs. This can be used to ensure that a critical + loop within a function is cache line aligned. Note this version + does not adjust the padding if CALL_MCOUNT is defined. */ + +#define ENTRY_ALIGN_AND_PAD(name, align, padding) \ + .globl C_SYMBOL_NAME(name); \ + .type C_SYMBOL_NAME(name),%function; \ + .p2align align; \ + .rep padding; \ + nop; \ + .endr; \ + C_LABEL(name) \ + cfi_startproc; \ + CALL_MCOUNT + #undef END #define END(name) \ cfi_endproc; \ |