[ginge.git] / loader / syscalls.S

@ vim:filetype=armasm
#include <sys/syscall.h>


.global sys_cacheflush @ const void *start_addr, const void *end_addr
sys_cacheflush:
    mov     r2, #0
#ifdef __ARM_EABI__
    /* EABI version */
    str     r7, [sp, #-4]!
    mov     r7, #(__ARM_NR_cacheflush & 0xff)
#if (__ARM_NR_cacheflush & 0x00ff00)
    orr     r7, r7, #(__ARM_NR_cacheflush & 0x00ff00)
#endif
#if (__ARM_NR_cacheflush & 0xff0000)
    orr     r7, r7, #(__ARM_NR_cacheflush & 0xff0000)
#endif
    swi     0
    ldr     r7, [sp], #4
#else
    /* OABI */
    swi     __ARM_NR_cacheflush
#endif
    bx      lr


#ifdef __ARM_EABI__
#error hm?
#endif

.global g_syscall
g_syscall:
    mov   r12, sp
    stmfd sp!, {r4, r5, r6}
    ldmia r12, {r4, r5, r6}
    swi   __NR_syscall
    ldmfd sp!, {r4, r5, r6}

.global g_syscall_error
g_syscall_error:
    cmn   r0, #4096
    bxcc  lr
    stmfd sp!, {r4, lr}
    rsb   r4, r0, #0
    bl    __errno_location
    str   r4, [r0]
    mov   r0, #-1
    ldmfd sp!, {r4, pc}

.global g_clone
g_clone:
    ldr   r12,[sp, #4]      @ arg6 - convenience func ptr
    str   r4, [sp, #-4]!
    ldr   r4, [sp, #4]      @ arg5
    swi   __NR_clone
    tst   r0, r0
    bxeq  r12               @ child
    cmn   r0, #4096
    ldr   r4, [sp], #4
    bcs   g_syscall_error
    bx    lr

@ raw - no errno
.macro raw_syscall_easy name nr
.global \name
\name:
    swi   \nr
    bx    lr
.endm

.macro raw_syscall name nr
.global \name
\name:
    mov   r12, sp
    stmfd sp!, {r4, r5, r6, lr}
    ldmia r12, {r4, r5, r6}
    swi   \nr
    ldmfd sp!, {r4, r5, r6, pc}
.endm

raw_syscall_easy g_open_raw,           __NR_open
raw_syscall_easy g_read_raw,           __NR_read
raw_syscall_easy g_write_raw,          __NR_write
raw_syscall      g_mmap2_raw,          __NR_mmap2
raw_syscall_easy g_munmap_raw,         __NR_munmap
raw_syscall_easy g_ioctl_raw,          __NR_ioctl
raw_syscall_easy g_close_raw,          __NR_close
raw_syscall_easy g_chdir_raw,          __NR_chdir
raw_syscall_easy g_futex_raw,          __NR_futex
raw_syscall_easy g_nanosleep_raw,      __NR_nanosleep
raw_syscall_easy g_readlink_raw,       __NR_readlink
raw_syscall_easy g_execve_raw,         __NR_execve
raw_syscall_easy g_clock_gettime_raw,  __NR_clock_gettime
raw_syscall_easy g_rt_sigprocmask_raw, __NR_rt_sigprocmask
raw_syscall_easy g_exit_group_raw,     __NR_exit_group
Commit	Line	Data
d0b9b0df	1	@ vim:filetype=armasm
	2	#include <sys/syscall.h>
	3
	4
	5	.global sys_cacheflush @ const void start_addr, const void end_addr
	6	sys_cacheflush:
	7	mov r2, #0
	8	#ifdef __ARM_EABI__
	9	/* EABI version */
	10	str r7, [sp, #-4]!
	11	mov r7, #(__ARM_NR_cacheflush & 0xff)
	12	#if (__ARM_NR_cacheflush & 0x00ff00)
	13	orr r7, r7, #(__ARM_NR_cacheflush & 0x00ff00)
	14	#endif
	15	#if (__ARM_NR_cacheflush & 0xff0000)
	16	orr r7, r7, #(__ARM_NR_cacheflush & 0xff0000)
	17	#endif
	18	swi 0
	19	ldr r7, [sp], #4
	20	#else
	21	/* OABI */
	22	swi __ARM_NR_cacheflush
	23	#endif
	24	bx lr
	25
	26
	27	#ifdef __ARM_EABI__
	28	#error hm?
	29	#endif
	30
	31	.global g_syscall
	32	g_syscall:
	33	mov r12, sp
	34	stmfd sp!, {r4, r5, r6}
	35	ldmia r12, {r4, r5, r6}
	36	swi __NR_syscall
	37	ldmfd sp!, {r4, r5, r6}
	38
	39	.global g_syscall_error
	40	g_syscall_error:
	41	cmn r0, #4096
	42	bxcc lr
	43	stmfd sp!, {r4, lr}
	44	rsb r4, r0, #0
	45	bl __errno_location
	46	str r4, [r0]
	47	mov r0, #-1
	48	ldmfd sp!, {r4, pc}
	49
	50	.global g_clone
	51	g_clone:
	52	ldr r12,[sp, #4] @ arg6 - convenience func ptr
	53	str r4, [sp, #-4]!
	54	ldr r4, [sp, #4] @ arg5
	55	swi __NR_clone
	56	tst r0, r0
	57	bxeq r12 @ child
	58	cmn r0, #4096
	59	ldr r4, [sp], #4
	60	bcs g_syscall_error
	61	bx lr
	62
	63	@ raw - no errno
	64	.macro raw_syscall_easy name nr
65	.global \name
66	\name:
67	swi \nr
68	bx lr
69	.endm
70
71	.macro raw_syscall name nr
72	.global \name
73	\name:
74	mov r12, sp
75	stmfd sp!, {r4, r5, r6, lr}
76	ldmia r12, {r4, r5, r6}
77	swi \nr
b4f4cb40	78	ldmfd sp!, {r4, r5, r6, pc}
d0b9b0df	79	.endm
	80
	81	raw_syscall_easy g_open_raw, __NR_open
	82	raw_syscall_easy g_read_raw, __NR_read
	83	raw_syscall_easy g_write_raw, __NR_write
b4f4cb40	84	raw_syscall g_mmap2_raw, __NR_mmap2
	85	raw_syscall_easy g_munmap_raw, __NR_munmap
	86	raw_syscall_easy g_ioctl_raw, __NR_ioctl
	87	raw_syscall_easy g_close_raw, __NR_close
	88	raw_syscall_easy g_chdir_raw, __NR_chdir
d0b9b0df	89	raw_syscall_easy g_futex_raw, __NR_futex
d0b9b0df	90	raw_syscall_easy g_nanosleep_raw, __NR_nanosleep
c3831532	91	raw_syscall_easy g_readlink_raw, __NR_readlink
78684356	92	raw_syscall_easy g_execve_raw, __NR_execve
d0b9b0df	93	raw_syscall_easy g_clock_gettime_raw, __NR_clock_gettime
d0b9b0df	94	raw_syscall_easy g_rt_sigprocmask_raw, __NR_rt_sigprocmask
b4f4cb40	95	raw_syscall_easy g_exit_group_raw, __NR_exit_group