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| author | David 'Digit' Turner <digit@google.com> | 2010-01-22 18:59:05 -0800 |
|---|---|---|
| committer | David 'Digit' Turner <digit@google.com> | 2010-01-25 11:18:30 -0800 |
| commit | 97cf7f3394780d524038fc083e2c134031b54728 (patch) | |
| tree | 40b61956bbe4d28babe839c3be40e9f114810e5f /libc/arch-arm/syscalls | |
| parent | 1a2917ca954f575cc9698c99e54bd93087793c8f (diff) | |
| download | bionic-97cf7f3394780d524038fc083e2c134031b54728.zip bionic-97cf7f3394780d524038fc083e2c134031b54728.tar.gz bionic-97cf7f3394780d524038fc083e2c134031b54728.tar.bz2 | |
Implement clone() C library function properly.
Only provide an implementation for ARM at the moment, since
it requires specific assembly fragments (the standard syscall
stubs cannot be used because the child returns in a different
stack).
Diffstat (limited to 'libc/arch-arm/syscalls')
| -rw-r--r-- | libc/arch-arm/syscalls/__sys_clone.S (renamed from libc/arch-arm/syscalls/__clone.S) | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/libc/arch-arm/syscalls/__clone.S b/libc/arch-arm/syscalls/__sys_clone.S index 650e2c0..9fe2641 100644 --- a/libc/arch-arm/syscalls/__clone.S +++ b/libc/arch-arm/syscalls/__sys_clone.S @@ -2,17 +2,19 @@ #include <sys/linux-syscalls.h> .text - .type __clone, #function - .globl __clone + .type __sys_clone, #function + .globl __sys_clone .align 4 .fnstart -__clone: - .save {r4, r7} - stmfd sp!, {r4, r7} +__sys_clone: + mov ip, sp + .save {r4, r5, r6, r7} + stmfd sp!, {r4, r5, r6, r7} + ldmfd ip, {r4, r5, r6} ldr r7, =__NR_clone swi #0 - ldmfd sp!, {r4, r7} + ldmfd sp!, {r4, r5, r6, r7} movs r0, r0 bxpl lr b __set_syscall_errno |