minix/lib/libc/arch/arm/sys-minix/_ipc.S
2012-08-28 13:49:27 -04:00

84 lines
2.1 KiB
ArmAsm

#include <minix/ipcconst.h>
#include <machine/asm.h>
/**========================================================================* */
/* IPC assembly routines * */
/**========================================================================* */
ENTRY(_send)
push {fp}
mov fp, sp
mov r2, r1 /* r2 = msg ptr */
mov r1, r0 /* r1 = src_dest */
mov r0, #SEND /* _send(dest, ptr) */
mov r3, #IPCVEC /* r3 determines the SVC type */
svc #0 /* trap to kernel */
pop {fp}
bx lr
ENTRY(_receive)
push {fp}
mov fp, sp
push {r2} /* save status ptr */
mov r2, r1 /* r2 = msg ptr */
mov r1, r0 /* r1 = src_dest */
mov r0, #RECEIVE /* _receive(src, ptr) */
mov r3, #IPCVEC /* r3 determines the SVC type */
svc #0 /* trap to kernel */
pop {r2} /* restore status ptr */
str r1, [r2]
pop {fp}
bx lr
ENTRY(_sendrec)
push {fp}
mov fp, sp
mov r2, r1 /* r2 = msg ptr */
mov r1, r0 /* r1 = src_dest */
mov r0, #SENDREC /* _sendrec(srcdest, ptr) */
mov r3, #IPCVEC /* r3 determines the SVC type */
svc #0 /* trap to kernel */
pop {fp}
bx lr
ENTRY(_minix_kernel_info_struct)
push {fp}
mov fp, sp
push {r0}
mov r1, #0
mov r2, #0
mov r0, #MINIX_KERNINFO /* kerninfo() */
mov r3, #IPCVEC /* r3 determines the SVC type */
svc #0 /* trap to kernel */
pop {r0} /* r0 = return struct ptr */
ldr r0, [r0]
mov r0, r1
pop {fp}
bx lr
ENTRY(_notify)
push {fp}
mov fp, sp
mov r1, r0 /* r1 = src_dest */
mov r0, #NOTIFY /* _notify(srcdst) */
mov r3, #IPCVEC /* r3 determines the SVC type */
svc #0 /* trap to kernel */
pop {fp}
bx lr
ENTRY(_sendnb)
push {fp}
mov fp, sp
mov r2, r1 /* r2 = msg ptr */
mov r1, r0 /* r1 = src_dest */
mov r0, #SENDNB /* _sendnb(dest, ptr) */
mov r3, #IPCVEC /* r3 determines the SVC type */
svc #0 /* trap to kernel */
pop {fp}
bx lr
ENTRY(_do_kernel_call)
/* r0 already holds msg ptr */
mov r3, #KERVEC /* r3 determines the SVC type */
svc #0 /* trap to kernel */
bx lr