[deliverable/linux.git] / arch / um / sys-i386 / stub.S

#include "as-layout.h"

	.globl syscall_stub
.section .__syscall_stub, "x"

	.globl batch_syscall_stub
batch_syscall_stub:
	/* load pointer to first operation */
	mov	$(STUB_DATA+8), %esp

again:
	/* load length of additional data */
	mov	0x0(%esp), %eax

	/* if(length == 0) : end of list */
	/* write possible 0 to header */
	mov	%eax, STUB_DATA+4
	cmpl	$0, %eax
	jz	done

	/* save current pointer */
	mov	%esp, STUB_DATA+4

	/* skip additional data */
	add	%eax, %esp

	/* load syscall-# */
	pop	%eax

	/* load syscall params */
	pop	%ebx
	pop	%ecx
	pop	%edx
	pop	%esi
 	pop	%edi
	pop	%ebp

	/* execute syscall */
	int	$0x80

	/* check return value */
	pop	%ebx
	cmp	%ebx, %eax
	je	again

done:
	/* save return value */
	mov	%eax, STUB_DATA

	/* stop */
	int3
Commit	Line	Data
54ae36f2	1	#include "as-layout.h"
d67b569f JD	2
	3	.globl syscall_stub
	4	.section .__syscall_stub, "x"
c5600490 JD	5
	6	.globl batch_syscall_stub
	7	batch_syscall_stub:
07bf731e	8	/* load pointer to first operation */
4bdf8bc4	9	mov $(STUB_DATA+8), %esp
07bf731e BS	10
	11	again:
	12	/* load length of additional data */
	13	mov 0x0(%esp), %eax
	14
	15	/* if(length == 0) : end of list */
	16	/* write possible 0 to header */
4bdf8bc4	17	mov %eax, STUB_DATA+4
c5600490 JD	18	cmpl $0, %eax
c5600490 JD	19	jz done
07bf731e BS	20
07bf731e BS	21	/* save current pointer */
4bdf8bc4	22	mov %esp, STUB_DATA+4
07bf731e BS	23
	24	/* skip additional data */
	25	add %eax, %esp
	26
	27	/* load syscall-# */
	28	pop %eax
	29
	30	/* load syscall params */
c5600490 JD	31	pop %ebx
	32	pop %ecx
	33	pop %edx
	34	pop %esi
	35	pop %edi
	36	pop %ebp
07bf731e BS	37
07bf731e BS	38	/* execute syscall */
c5600490	39	int $0x80
07bf731e BS	40
	41	/* check return value */
	42	pop %ebx
	43	cmp %ebx, %eax
	44	je again
	45
	46	done:
	47	/* save return value */
4bdf8bc4	48	mov %eax, STUB_DATA
07bf731e BS	49
	50	/* stop */
	51	int3