| Brad Bishop | 1932369 | 2019-04-05 15:28:33 -0400 | [diff] [blame^] | 1 | Do not add stack pointer to clobber list |
| 2 | |
| 3 | it was being ignored until gcc 9.0 became capable |
| 4 | of flagging this silent ignoring via [1] |
| 5 | |
| 6 | [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52813<Paste> |
| 7 | |
| 8 | Upstream-Status: Submitted [https://chromium-review.googlesource.com/c/linux-syscall-support/+/1390160] |
| 9 | Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| 10 | |
| 11 | --- a/src/third_party/lss/linux_syscall_support.h |
| 12 | +++ b/src/third_party/lss/linux_syscall_support.h |
| 13 | @@ -1966,7 +1966,7 @@ struct kernel_statfs { |
| 14 | __asm__ volatile(LSS_ENTRYPOINT \ |
| 15 | : "=a" (__res) \ |
| 16 | : "0" (__NR_##name) \ |
| 17 | - : "esp", "memory"); \ |
| 18 | + : "memory"); \ |
| 19 | LSS_RETURN(type,__res); \ |
| 20 | } |
| 21 | #undef _syscall1 |
| 22 | @@ -2407,7 +2407,7 @@ struct kernel_statfs { |
| 23 | "d"(LSS_SYSCALL_ARG(parent_tidptr)), |
| 24 | "r"(LSS_SYSCALL_ARG(newtls)), |
| 25 | "r"(LSS_SYSCALL_ARG(child_tidptr)) |
| 26 | - : "rsp", "memory", "r8", "r10", "r11", "rcx"); |
| 27 | + : "memory", "r8", "r10", "r11", "rcx"); |
| 28 | } |
| 29 | LSS_RETURN(int, __res); |
| 30 | } |