use compiled libgcc

1 files changed, 171 insertions, 0 deletions

diff --git a/asm/libc.s b/asm/libc.s
new file mode 100644
index 000000000..e3b25aa69
--- /dev/null
+++ b/asm/libc.s
@@ -0,0 +1,171 @@
+	.include "asm/macros.s"
+
+	.syntax unified
+
+	.text
+
+	thumb_func_start memcpy
+@ void *memcpy(void *dest, void *src, int size)
+memcpy: @ 81E26FC
+	push {r4,r5,lr}
+	adds r5, r0, 0
+	adds r4, r5, 0
+	adds r3, r1, 0
+	cmp r2, 0xF
+	bls _081E273C
+	adds r0, r3, 0
+	orrs r0, r5
+	movs r1, 0x3
+	ands r0, r1
+	cmp r0, 0
+	bne _081E273C
+	adds r1, r5, 0
+_081E2716:
+	ldm r3!, {r0}
+	stm r1!, {r0}
+	ldm r3!, {r0}
+	stm r1!, {r0}
+	ldm r3!, {r0}
+	stm r1!, {r0}
+	ldm r3!, {r0}
+	stm r1!, {r0}
+	subs r2, 0x10
+	cmp r2, 0xF
+	bhi _081E2716
+	cmp r2, 0x3
+	bls _081E273A
+_081E2730:
+	ldm r3!, {r0}
+	stm r1!, {r0}
+	subs r2, 0x4
+	cmp r2, 0x3
+	bhi _081E2730
+_081E273A:
+	adds r4, r1, 0
+_081E273C:
+	subs r2, 0x1
+	movs r0, 0x1
+	negs r0, r0
+	cmp r2, r0
+	beq _081E2756
+	adds r1, r0, 0
+_081E2748:
+	ldrb r0, [r3]
+	strb r0, [r4]
+	adds r3, 0x1
+	adds r4, 0x1
+	subs r2, 0x1
+	cmp r2, r1
+	bne _081E2748
+_081E2756:
+	adds r0, r5, 0
+	pop {r4,r5,pc}
+	thumb_func_end memcpy
+
+	thumb_func_start memset
+@ void *memset(void *dest, char c, int size)
+memset: @ 81E275C
+	push {r4,r5,lr}
+	adds r5, r0, 0
+	adds r4, r1, 0
+	adds r3, r5, 0
+	cmp r2, 0x3
+	bls _081E27A2
+	movs r0, 0x3
+	ands r0, r5
+	cmp r0, 0
+	bne _081E27A2
+	adds r1, r5, 0
+	movs r0, 0xFF
+	ands r4, r0
+	lsls r3, r4, 8
+	orrs r3, r4
+	lsls r0, r3, 16
+	orrs r3, r0
+	cmp r2, 0xF
+	bls _081E2796
+_081E2782:
+	stm r1!, {r3}
+	stm r1!, {r3}
+	stm r1!, {r3}
+	stm r1!, {r3}
+	subs r2, 0x10
+	cmp r2, 0xF
+	bhi _081E2782
+	b _081E2796
+_081E2792:
+	stm r1!, {r3}
+	subs r2, 0x4
+_081E2796:
+	cmp r2, 0x3
+	bhi _081E2792
+	adds r3, r1, 0
+	b _081E27A2
+_081E279E:
+	strb r4, [r3]
+	adds r3, 0x1
+_081E27A2:
+	adds r0, r2, 0
+	subs r2, 0x1
+	cmp r0, 0
+	bne _081E279E
+	adds r0, r5, 0
+	pop {r4,r5,pc}
+	thumb_func_end memset
+
+	thumb_func_start strcmp
+@ int strcmp(char *s1, char *s2)
+strcmp: @ 81E27B0
+	push {r4,r5,lr}
+	adds r2, r0, 0
+	adds r3, r1, 0
+	orrs r0, r3
+	movs r1, 0x3
+	ands r0, r1
+	cmp r0, 0
+	bne _081E27F6
+	ldr r1, [r2]
+	ldr r0, [r3]
+	cmp r1, r0
+	bne _081E27F6
+	ldr r5, _081E27DC
+	ldr r4, _081E27E0
+_081E27CC:
+	ldr r1, [r2]
+	adds r0, r1, r5
+	bics r0, r1
+	ands r0, r4
+	cmp r0, 0
+	beq _081E27E4
+	movs r0, 0
+	b _081E2808
+	.align 2, 0
+_081E27DC: .4byte 0xfefefeff
+_081E27E0: .4byte 0x80808080
+_081E27E4:
+	adds r2, 0x4
+	adds r3, 0x4
+	ldr r1, [r2]
+	ldr r0, [r3]
+	cmp r1, r0
+	beq _081E27CC
+	b _081E27F6
+_081E27F2:
+	adds r2, 0x1
+	adds r3, 0x1
+_081E27F6:
+	ldrb r0, [r2]
+	cmp r0, 0
+	beq _081E2802
+	ldrb r1, [r3]
+	cmp r0, r1
+	beq _081E27F2
+_081E2802:
+	ldrb r2, [r2]
+	ldrb r3, [r3]
+	subs r0, r2, r3
+_081E2808:
+	pop {r4,r5,pc}
+	thumb_func_end strcmp
+
+	.align 2, 0 @ Don't pad with nop.