| From d1d7b616219fd47736c804ff4c2f393d7184a75b Mon Sep 17 00:00:00 2001 |
| From: Khem Raj <raj.khem@gmail.com> |
| Date: Sun, 23 Dec 2018 16:58:04 -0800 |
| Subject: [PATCH] chromium: stack pointer clobber |
| |
| Do not add stack pointer to clobber list |
| |
| it was being ignored until gcc 9.0 became capable |
| of flagging this silent ignoring via [1] |
| |
| [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52813<Paste> |
| |
| Upstream-Status: Submitted [https://chromium-review.googlesource.com/c/linux-syscall-support/+/1390160] |
| Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| --- |
| src/third_party/lss/linux_syscall_support.h | 10 +++++----- |
| 1 file changed, 5 insertions(+), 5 deletions(-) |
| |
| Index: b/src/third_party/lss/linux_syscall_support.h |
| =================================================================== |
| --- a/src/third_party/lss/linux_syscall_support.h |
| +++ b/src/third_party/lss/linux_syscall_support.h |
| @@ -1957,7 +1957,7 @@ struct kernel_statfs { |
| LSS_ENTRYPOINT \ |
| "pop %%ebx" \ |
| args \ |
| - : "esp", "memory"); \ |
| + : "memory"); \ |
| LSS_RETURN(type,__res) |
| #undef _syscall0 |
| #define _syscall0(type,name) \ |
| @@ -1966,7 +1966,7 @@ struct kernel_statfs { |
| __asm__ volatile(LSS_ENTRYPOINT \ |
| : "=a" (__res) \ |
| : "0" (__NR_##name) \ |
| - : "esp", "memory"); \ |
| + : "memory"); \ |
| LSS_RETURN(type,__res); \ |
| } |
| #undef _syscall1 |
| @@ -2014,7 +2014,7 @@ struct kernel_statfs { |
| : "i" (__NR_##name), "ri" ((long)(arg1)), \ |
| "c" ((long)(arg2)), "d" ((long)(arg3)), \ |
| "S" ((long)(arg4)), "D" ((long)(arg5)) \ |
| - : "esp", "memory"); \ |
| + : "memory"); \ |
| LSS_RETURN(type,__res); \ |
| } |
| #undef _syscall6 |
| @@ -2036,7 +2036,7 @@ struct kernel_statfs { |
| : "i" (__NR_##name), "0" ((long)(&__s)), \ |
| "c" ((long)(arg2)), "d" ((long)(arg3)), \ |
| "S" ((long)(arg4)), "D" ((long)(arg5)) \ |
| - : "esp", "memory"); \ |
| + : "memory"); \ |
| LSS_RETURN(type,__res); \ |
| } |
| LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, |
| @@ -2122,7 +2122,7 @@ struct kernel_statfs { |
| : "0"(-EINVAL), "i"(__NR_clone), |
| "m"(fn), "m"(child_stack), "m"(flags), "m"(arg), |
| "m"(parent_tidptr), "m"(newtls), "m"(child_tidptr) |
| - : "esp", "memory", "ecx", "edx", "esi", "edi"); |
| + : "memory", "ecx", "edx", "esi", "edi"); |
| LSS_RETURN(int, __res); |
| } |
| |
| @@ -2407,7 +2407,7 @@ struct kernel_statfs { |
| "d"(LSS_SYSCALL_ARG(parent_tidptr)), |
| "r"(LSS_SYSCALL_ARG(newtls)), |
| "r"(LSS_SYSCALL_ARG(child_tidptr)) |
| - : "rsp", "memory", "r8", "r10", "r11", "rcx"); |
| + : "memory", "r8", "r10", "r11", "rcx"); |
| } |
| LSS_RETURN(int, __res); |
| } |