[mirror_ubuntu-zesty-kernel.git] / arch / x86 / um / stub_32.S

#include <as-layout.h>

.section .__syscall_stub, "ax"

	.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
37185b33	1	#include <as-layout.h>
d67b569f	2
276c974a	3	.section .__syscall_stub, "ax"
c5600490 JD	4
	5	.globl batch_syscall_stub
	6	batch_syscall_stub:
07bf731e	7	/* load pointer to first operation */
4bdf8bc4	8	mov $(STUB_DATA+8), %esp
07bf731e BS	9
	10	again:
	11	/* load length of additional data */
	12	mov 0x0(%esp), %eax
	13
	14	/* if(length == 0) : end of list */
	15	/* write possible 0 to header */
4bdf8bc4	16	mov %eax, STUB_DATA+4
c5600490 JD	17	cmpl $0, %eax
c5600490 JD	18	jz done
07bf731e BS	19
07bf731e BS	20	/* save current pointer */
4bdf8bc4	21	mov %esp, STUB_DATA+4
07bf731e BS	22
	23	/* skip additional data */
	24	add %eax, %esp
	25
	26	/* load syscall-# */
	27	pop %eax
	28
	29	/* load syscall params */
c5600490 JD	30	pop %ebx
	31	pop %ecx
	32	pop %edx
	33	pop %esi
	34	pop %edi
	35	pop %ebp
07bf731e BS	36
07bf731e BS	37	/* execute syscall */
c5600490	38	int $0x80
07bf731e BS	39
	40	/* check return value */
	41	pop %ebx
	42	cmp %ebx, %eax
	43	je again
	44
	45	done:
	46	/* save return value */
4bdf8bc4	47	mov %eax, STUB_DATA
07bf731e BS	48
	49	/* stop */
	50	int3