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Remove superfluous RET instructions

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Justine Tunney 2023-06-06 19:46:56 -07:00
parent b6182db813
commit 9793d3524f
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GPG key ID: BE714B4575D6E328
3 changed files with 9 additions and 11 deletions
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16
libc/runtime/ftrace-hook.S
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@ -23,9 +23,8 @@ ftrace_hook:
#ifdef __x86_64__ #ifdef __x86_64__
cmp $0,__ftrace(%rip) cmp $0,__ftrace(%rip)
jg 1f jle 1f
ret push %rbp
1: push %rbp
mov %rsp,%rbp mov %rsp,%rbp
push %rax push %rax
push %rax push %rax
@ -45,16 +44,15 @@ ftrace_hook:
pop %rax pop %rax
pop %rax pop %rax
pop %rbp pop %rbp
ret 1: ret
#elif defined(__aarch64__) #elif defined(__aarch64__)
adrp x9,__ftrace adrp x9,__ftrace
ldr w9,[x9,#:lo12:__ftrace] ldr w9,[x9,#:lo12:__ftrace]
cmp w9,1 cmp w9,0
bge 1f ble 1f
ret stp x29,x30,[sp,-96]!
1: stp x29,x30,[sp,-96]!
mov x29,sp mov x29,sp
stp x0,x1,[sp,16] stp x0,x1,[sp,16]
stp x2,x3,[sp,32] stp x2,x3,[sp,32]
@ -68,7 +66,7 @@ ftrace_hook:
ldp x2,x3,[sp,32] ldp x2,x3,[sp,32]
ldp x0,x1,[sp,16] ldp x0,x1,[sp,16]
ldp x29,x30,[sp],96 ldp x29,x30,[sp],96
ret 1: ret
#endif /* __x86_64__ */ #endif /* __x86_64__ */
.endfn ftrace_hook,globl .endfn ftrace_hook,globl

2
libc/runtime/init.S
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@ -48,9 +48,7 @@
.section .initprologue,"ax",@progbits .section .initprologue,"ax",@progbits
.type _init,@function .type _init,@function
.globl _init .globl _init
.ftrace1
_init: _init:
.ftrace2
#ifdef __x86_64__ #ifdef __x86_64__
push %rbp push %rbp
mov %rsp,%rbp mov %rsp,%rbp

2
tool/emacs/cosmo-c-builtins.el
View file

@ -68,6 +68,7 @@
"__builtin_ctzl" "__builtin_ctzl"
"__builtin_ctzll" "__builtin_ctzll"
"__builtin_expect" "__builtin_expect"
"__builtin_memcpy"
"__builtin_expect_with_probability" "__builtin_expect_with_probability"
"__builtin_extract_return_addr" "__builtin_extract_return_addr"
"__builtin_isnan" "__builtin_isnan"
@ -97,6 +98,7 @@
"__builtin_trap" "__builtin_trap"
"__builtin_types_compatible_p" "__builtin_types_compatible_p"
"__builtin_unreachable" "__builtin_unreachable"
"__builtin_ia32_movntdq"
"__has_attribute" "__has_attribute"
"__has_builtin" "__has_builtin"
"__has_cpp_attribute" "__has_cpp_attribute"