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am 1fea0f25: Merge "Clean up ARM assembler files to use ENTRY/END."

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# Via Elliott Hughes (1) and Gerrit Code Review (1)
* commit '1fea0f258a45d918fe5ae8e9769f45c0348bd095':
  Clean up ARM assembler files to use ENTRY/END.
This commit is contained in:
Elliott Hughes 2013-02-11 16:17:48 -08:00 committed by Android Git Automerger
commit 03798dd23c
4 changed files with 43 additions and 120 deletions
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21
libc/arch-arm/bionic/_exit_with_stack_teardown.S
View file

@ -25,27 +25,20 @@
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <asm/unistd.h>
#include <machine/asm.h>
#include <sys/linux-syscalls.h>
@ void _exit_with_stack_teardown(void * stackBase, int stackSize, int retCode)
// void _exit_with_stack_teardown(void* stackBase, int stackSize, int retCode)
ENTRY(_exit_with_stack_teardown)
#if __ARM_EABI__
mov lr, r2
ldr r7, =__NR_munmap
swi #0 @ the stack is destroyed by this call
swi #0 // the stack is destroyed by this call
mov r0, lr
ldr r7, =__NR_exit
swi #0
#else
mov lr, r2
swi # __NR_munmap @ the stack is destroyed by this call
mov r0, lr
swi # __NR_exit
#endif
@ exit() should never return, cause a crash if it does
mov r0, #0
ldr r0, [r0]
// exit() should never return, cause a crash if it does
mov r0, #0
ldr r0, [r0]
END(_exit_with_stack_teardown)

9
libc/arch-arm/bionic/clone.S
View file

@ -25,8 +25,9 @@
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/linux-syscalls.h>
#include <machine/asm.h>
#include <sys/linux-syscalls.h>
ENTRY(__pthread_clone)
@ insert the args onto the new stack
@ -39,18 +40,12 @@ ENTRY(__pthread_clone)
@ new sp is already in r1
#if __ARM_EABI__
stmfd sp!, {r4, r7}
ldr r7, =__NR_clone
swi #0
#else
swi #__NR_clone
#endif
movs r0, r0
#if __ARM_EABI__
ldmnefd sp!, {r4, r7}
#endif
blt __error
bxne lr

95
libc/arch-arm/bionic/futex_arm.S
View file

@ -25,32 +25,14 @@
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/linux-syscalls.h>
#include <machine/asm.h>
#include <machine/cpu-features.h>
#define FUTEX_WAIT 0
#define FUTEX_WAKE 1
/* __futex_wait(*ftx, val, *timespec) */
/* __futex_wake(*ftx, counter) */
/* __futex_syscall3(*ftx, op, val) */
/* __futex_syscall4(*ftx, op, val, *timespec) */
.global __futex_wait
.type __futex_wait, %function
.global __futex_wake
.type __futex_wake, %function
.global __futex_syscall3
.type __futex_syscall3, %function
.global __futex_syscall4
.type __futex_syscall4, %function
#if __ARM_EABI__
// __futex_syscall3(*ftx, op, val)
ENTRY(__futex_syscall3)
stmdb sp!, {r4, r7}
.save {r4, r7}
@ -60,53 +42,32 @@ ENTRY(__futex_syscall3)
bx lr
END(__futex_syscall3)
ENTRY(__futex_wait)
stmdb sp!, {r4, r7}
.save {r4, r7}
mov r3, r2
mov r2, r1
mov r1, #FUTEX_WAIT
ldr r7, =__NR_futex
swi #0
ldmia sp!, {r4, r7}
bx lr
END(__futex_wait)
ENTRY(__futex_wake)
.save {r4, r7}
stmdb sp!, {r4, r7}
mov r2, r1
mov r1, #FUTEX_WAKE
ldr r7, =__NR_futex
swi #0
ldmia sp!, {r4, r7}
bx lr
END(__futex_wake)
#else
ENTRY(__futex_syscall3)
swi #__NR_futex
bx lr
END(__futex_syscall3)
ENTRY(__futex_wait)
mov r3, r2
mov r2, r1
mov r1, #FUTEX_WAIT
swi #__NR_futex
bx lr
END(__futex_wait)
ENTRY(__futex_wake)
mov r2, r1
mov r1, #FUTEX_WAKE
swi #__NR_futex
bx lr
END(__futex_wake)
#endif
// __futex_syscall4(*ftx, op, val, *timespec)
ENTRY(__futex_syscall4)
b __futex_syscall3
END(__futex_syscall4)
// __futex_wait(*ftx, val, *timespec)
ENTRY(__futex_wait)
stmdb sp!, {r4, r7}
.save {r4, r7}
mov r3, r2
mov r2, r1
mov r1, #FUTEX_WAIT
ldr r7, =__NR_futex
swi #0
ldmia sp!, {r4, r7}
bx lr
END(__futex_wait)
// __futex_wake(*ftx, counter)
ENTRY(__futex_wake)
.save {r4, r7}
stmdb sp!, {r4, r7}
mov r2, r1
mov r1, #FUTEX_WAKE
ldr r7, =__NR_futex
swi #0
ldmia sp!, {r4, r7}
bx lr
END(__futex_wake)

38
libc/arch-arm/bionic/syscall.S
View file

@ -25,47 +25,21 @@
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <machine/asm.h>
#include <sys/linux-syscalls.h>
.text
.align 4
.type syscall,#function
.globl syscall
.text
.align
#if __ARM_EABI__
syscall:
ENTRY(syscall)
mov ip, sp
stmfd sp!, {r4, r5, r6, r7}
stmfd sp!, {r4, r5, r6, r7}
mov r7, r0
mov r0, r1
mov r1, r2
mov r2, r3
ldmfd ip, {r3, r4, r5, r6}
ldmfd ip, {r3, r4, r5, r6}
swi #0
ldmfd sp!, {r4, r5, r6, r7}
movs r0, r0
bxpl lr
b __set_syscall_errno
#else
#ifndef __NR_syscall
#define __NR_syscall 113
#endif
syscall:
stmfd sp!, {r4, r5, lr}
ldr r4, [sp, #12]
ldr r5, [sp, #16]
swi __NR_syscall
ldmfd sp!, {r4, r5, lr}
movs r0, r0
bxpl lr
b __set_syscall_errno
#endif
END(syscall)