minix/lib/libc/arch/i386/rts/_senda.S

#include <minix/ipcconst.h>
#include <machine/asm.h>

	SYSVEC = 33

	MSGTAB = 8	/* message table */
	TABCOUNT = 12	/* number of entries in message table */

ENTRY(_senda)
	push	%ebp
	movl	%esp, %ebp
	push	%ebx
	movl	TABCOUNT(%ebp), %eax	/* eax = count */
	movl	MSGTAB(%ebp), %ebx	/* ebx = table */
	movl	$SENDA, %ecx	/* _senda(table, count) */
	int	$SYSVEC	/* trap to the kernel */
	pop	%ebx
	pop	%ebp
	ret
IPC status code for receive(). IPC changes: - receive() is changed to take an additional parameter, which is a pointer to a status code. - The status code is filled in by the kernel to provide additional information to the caller. For now, the kernel only fills in the IPC call used by the sender. Syslib changes: - sef_receive() has been split into sef_receive() (with the original semantics) and sef_receive_status() which exposes the status code to userland. - Ideally, every sys process should gradually switch to sef_receive_status() and use is_ipc_notify() as a dependable way to check for notify. - SEF has been modified to use is_ipc_notify() and demonstrate how to use the new status code. 2010-03-23 01:09:11 +01:00			`#include <minix/ipcconst.h>`
Macros for symbols used in both ASM and C -The macros take care of prepending the leading underscore when necessary. 2010-08-17 18:44:07 +02:00			`#include <machine/asm.h>`
Convert library asm files to GAS syntax 2010-03-03 15:27:30 +01:00
			`SYSVEC = 33`

			`MSGTAB = 8 /* message table */`
			`TABCOUNT = 12 /* number of entries in message table */`

Macros for symbols used in both ASM and C -The macros take care of prepending the leading underscore when necessary. 2010-08-17 18:44:07 +02:00			`ENTRY(_senda)`
Convert library asm files to GAS syntax 2010-03-03 15:27:30 +01:00			`push %ebp`
			`movl %esp, %ebp`
			`push %ebx`
			`movl TABCOUNT(%ebp), %eax /* eax = count */`
			`movl MSGTAB(%ebp), %ebx /* ebx = table */`
			`movl $SENDA, %ecx /* _senda(table, count) */`
			`int $SYSVEC /* trap to the kernel */`
			`pop %ebx`
			`pop %ebp`
			`ret`