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| author | Xi Ruoyao <xry111@mengyan1223.wang> | 2021-08-12 20:31:59 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2021-08-12 20:31:59 +0000 |
| commit | 1f51cd9a860ee45eee8a56fb2ba925267a2a7bfe (patch) | |
| tree | 9b5f6e6de2fc456934a0c40ec0e0fb6bf4b9ea83 /sysdeps/unix/sysv/linux/mips | |
| parent | 4cc79c217744743077bf7a0ec5e0a4318f1e6641 (diff) | |
| download | glibc-1f51cd9a860ee45eee8a56fb2ba925267a2a7bfe.tar.gz glibc-1f51cd9a860ee45eee8a56fb2ba925267a2a7bfe.tar.xz glibc-1f51cd9a860ee45eee8a56fb2ba925267a2a7bfe.zip | |
mips: align stack in clone [BZ #28223]
The MIPS O32 ABI requires 4 byte aligned stack, and the MIPS N64 and N32 ABI require 8 byte aligned stack. Previously if the caller passed an unaligned stack to clone the the child misbehaved. Fixes bug 28223.
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips')
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/clone.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/clone.S b/sysdeps/unix/sysv/linux/mips/clone.S index 71d9dba8bd..43a5ad3a40 100644 --- a/sysdeps/unix/sysv/linux/mips/clone.S +++ b/sysdeps/unix/sysv/linux/mips/clone.S @@ -55,6 +55,13 @@ NESTED(__clone,4*SZREG,sp) .set at #endif + /* Align stack to 4/8 bytes per the ABI. */ +#if _MIPS_SIM == _ABIO32 + li t0,-4 +#else + li t0,-8 +#endif + and a1,a1,t0 /* Sanity check arguments. */ li v0,EINVAL |