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| author | Christophe Lyon <christophe.lyon@st.com> | 2018-07-04 17:55:27 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbrodkorb@conet.de> | 2018-08-10 16:02:45 +0200 |
| commit | bb982429e7cb108510b89ef3b4448c5a59f5df7a (patch) | |
| tree | 20a9d6fad763b80a87ddecc5ceb2a19a3e6e209b | |
| parent | b79c7b582278ab6a6c8112aeff79b85089aab32d (diff) | |
arm/clone.S: Fix threading support
Change clone.S so that in FDPIC case we take into account the fact
that we are given a function descriptor.
* libc/sysdeps/linux/arm/clone.S (__clone): Support __FDPIC__.
Signed-off-by: Mickaël Guêné <mickael.guene@st.com>
Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
| -rw-r--r-- | libc/sysdeps/linux/arm/clone.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/arm/clone.S b/libc/sysdeps/linux/arm/clone.S index 8ca50fce4..eacf3dba6 100644 --- a/libc/sysdeps/linux/arm/clone.S +++ b/libc/sysdeps/linux/arm/clone.S @@ -130,8 +130,20 @@ PSEUDO_END (__clone) .cantunwind @ pick the function arg and call address off the stack and execute ldr r0, [sp, #4] +#if defined(__FDPIC__) + ldr r12, [sp] + mov r4, r9 + ldr r9, [r12, #4] + mov lr, pc + ldr pc, [r12] +#else mov lr, pc ldr pc, [sp] +#endif + +#if defined(__FDPIC__) + mov r9, r4 +#endif @ and we are done, passing the return value through r0 b HIDDEN_JUMPTARGET(_exit) |