dma3_manager

void ProcessDma3Requests(void) {
  // NOTE: the fillerA member of the DMA struct is actually u32 value;
  // NOTE: gUnknown_0300001C is just a pointer inside the gDma3Requests structure, not a true symbol; feel free to remove
  u16 total_size;
  if (gDma3ManagerLocked) return;
  total_size = 0;
  while (gDma3Requests[gDma3RequestCursor].size) {
    total_size += gDma3Requests[gDma3RequestCursor].size;
    if (total_size > 0xA000) return; // don't do too much at once
    if (REG_VCOUNT > 224) return; // we're about to leave vblank, stop
    switch (gDma3Requests[gDma3RequestCursor].mode) {

		case 1: { // regular 32-bit copy
        u32 request_size = gDma3Requests[gDma3RequestCursor].size;
        u32 * source = gDma3Requests[gDma3RequestCursor].src;
        u32 * destination = gDma3Requests[gDma3RequestCursor].dest;
        while (request_size > 0x1000) {
          DmaCopy32(3, source, destination, 0x1000);
          source += 0x1000 >> 2;
          destination += 0x1000 >> 2;
          request_size -= 0x1000;
        }
        DmaCopy32(3, source, destination, request_size);
      } break;

      case 2: { // repeat a single 32-bit value across RAM
        u32 request_size = gDma3Requests[gDma3RequestCursor].size;
        u32 * destination = gDma3Requests[gDma3RequestCursor].dest;
        while (request_size > 0x1000) {
          DmaFill32(3, gDma3Requests[gDma3RequestCursor].value, destination, 0x1000);
          destination += 0x1000 >> 2;
          request_size -= 0x1000;
        }
        DmaFill32(3, gDma3Requests[gDma3RequestCursor].value, destination, request_size);
      } break;

      case 3: { // regular 16-bit copy
        u32 request_size = gDma3Requests[gDma3RequestCursor].size;
        u16 * source = gDma3Requests[gDma3RequestCursor].src;
        u16 * destination = gDma3Requests[gDma3RequestCursor].dest;
        while (request_size > 0x1000) {
          DmaCopy16(3, source, destination, 0x1000);
          source += 0x1000 >> 1;
          destination += 0x1000 >> 1;
          request_size -= 0x1000;
        }
        DmaCopy16(3, source, destination, request_size);
      } break;
      case 4: { // repeat a single 16-bit value across RAM
        u32 request_size = gDma3Requests[gDma3RequestCursor].size;
        u16 * destination = gDma3Requests[gDma3RequestCursor].dest;
        while (request_size > 0x1000) {
          DmaFill16(3, gDma3Requests[gDma3RequestCursor].value, destination, 0x1000);
          destination += 0x1000 >> 1;
          request_size -= 0x1000;
        }
        DmaFill16(3, gDma3Requests[gDma3RequestCursor].value, destination, request_size);
      }
    }
    gDma3Requests[gDma3RequestCursor].src = NULL;
    gDma3Requests[gDma3RequestCursor].dest = NULL;
    gDma3Requests[gDma3RequestCursor].size = 0;
    gDma3Requests[gDma3RequestCursor].mode = 0;
    gDma3Requests[gDma3RequestCursor].value = 0;
    gDma3RequestCursor ++;
    if (gDma3RequestCursor >= 0x80) gDma3RequestCursor = 0;
  }
}

/*
	thumb_func_start ProcessDma3Requests
@ void ProcessDma3Requests()
ProcessDma3Requests: @ 8000BF0
	push {r4-r7,lr}
	mov r7, r10
	mov r6, r9
	mov r5, r8
	push {r5-r7}
	sub sp, 0xC
	ldr r0, =gDma3ManagerLocked
	ldrb r0, [r0]
	cmp r0, 0
	beq _08000C06
	b _08000E46
_08000C06:
	movs r0, 0
	str r0, [sp, 0x8]
	ldr r1, =gDma3Requests
	ldr r2, =gDma3RequestCursor
	ldrb r0, [r2]
	lsls r0, 4
	adds r0, r1
	ldrh r0, [r0, 0x8]
	mov r12, r2
	cmp r0, 0
	bne _08000C1E
	b _08000E46
_08000C1E:
	mov r8, r1
	adds r1, 0x4
	mov r10, r1
	movs r6, 0x80
	lsls r6, 5
	ldr r7, =REG_DMA3
	movs r2, 0
	mov r9, r2
_08000C2E:
	mov r3, r12 @ gDma3RequestCursor
	ldrb r0, [r3]
	lsls r5, r0, 4
	mov r0, r8  @ gDma3Requests
	adds r1, r5, r0 @ gDma3Requests[gDma3RequestCursor]
	ldrh r0, [r1, 0x8] @ gDma3Requests[gDma3RequestCursor].size
	ldr r2, [sp, 0x8]
	adds r0, r2, r0
	lsls r0, 16
	lsrs r0, 16
	str r0, [sp, 0x8]
	movs r0, 0xA0
	lsls r0, 8
	ldr r3, [sp, 0x8]
	cmp r3, r0
	bls _08000C50
	b _08000E46
_08000C50:
	ldr r0, =REG_VCOUNT
	ldrb r0, [r0]
	cmp r0, 0xE0
	bls _08000C5A
	b _08000E46
_08000C5A:
	ldrh r0, [r1, 0xA]
	cmp r0, 0x2
	beq _08000CD0
	cmp r0, 0x2
	bgt _08000C80
	cmp r0, 0x1
	beq _08000C8C
	b _08000DF0 // for 0
	.pool
_08000C80:
	cmp r0, 0x3
	beq _08000D3C
	cmp r0, 0x4
	bne _08000C8A
	b _08000D88
_08000C8A:
	b _08000DF0
CASE 1
_08000C8C:
	ldr r3, [r1]
	mov r2, r10
	adds r0, r5, r2
	ldr r2, [r0]
	ldrh r1, [r1, 0x8]
	cmp r1, r6
	bhi _08000CA6
	str r3, [r7]
	str r2, [r7, 0x4]
	lsrs r0, r1, 2
	movs r1, 0x84
	lsls r1, 24
	b _08000DAA
_08000CA6:
	ldr r4, =REG_DMA3
	str r3, [r4]
	str r2, [r4, 0x4]
	ldr r0, =0x84000400
	str r0, [r4, 0x8]
	ldr r0, [r4, 0x8]
	adds r3, r6
	adds r2, r6
	subs r1, r6
	cmp r1, r6
	bhi _08000CA6
	str r3, [r4]
	str r2, [r4, 0x4]
	lsrs r0, r1, 2
	movs r1, 0x84
	lsls r1, 24
	b _08000D76
	.pool

_08000CD0:
	mov r3, r10
	adds r0, r5, r3
	ldr r4, [r0]
	ldrh r1, [r1, 0x8]
	cmp r1, r6
	bhi _08000CF4
	mov r0, r8
	adds r0, 0xC
	adds r0, r5, r0
	ldr r0, [r0]
	str r0, [sp]
	mov r5, sp
	str r5, [r7]
	str r4, [r7, 0x4]
	lsrs r0, r1, 2
	movs r1, 0x85
	lsls r1, 24
	b _08000DAA
_08000CF4:
	mov r2, r12
	ldrb r0, [r2]
	lsls r0, 4
	mov r5, r8
	adds r5, 0xC
	adds r0, r5
	ldr r0, [r0]
	str r0, [sp]
	ldr r3, =REG_DMA3
	mov r0, sp
	str r0, [r3]
	str r4, [r3, 0x4]
	ldr r0, =0x85000400
	str r0, [r3, 0x8]
	ldr r0, [r3, 0x8]
	adds r4, r6
	subs r1, r6
	cmp r1, r6
	bhi _08000CF4
	ldrb r0, [r2]
	lsls r0, 4
	adds r0, r5
	ldr r0, [r0]
	str r0, [sp]
	mov r2, sp
	str r2, [r3]
	str r4, [r3, 0x4]
	lsrs r0, r1, 2
	movs r1, 0x85
	lsls r1, 24
	b _08000DEA
	.pool

_08000D3C:
	ldr r3, [r1]
	mov r2, r10
	adds r0, r5, r2
	ldr r2, [r0]
	ldrh r1, [r1, 0x8]
	cmp r1, r6
	bhi _08000D56
	str r3, [r7]
	str r2, [r7, 0x4]
	lsrs r0, r1, 1
	movs r1, 0x80
	lsls r1, 24
	b _08000DAA
_08000D56:
	ldr r4, =REG_DMA3
	str r3, [r4]
	str r2, [r4, 0x4]
	ldr r0, =0x80000800
	str r0, [r4, 0x8]
	ldr r0, [r4, 0x8]
	adds r3, r6
	adds r2, r6
	subs r1, r6
	cmp r1, r6
	bhi _08000D56
	str r3, [r4]
	str r2, [r4, 0x4]
	lsrs r0, r1, 1
	movs r1, 0x80
	lsls r1, 24
_08000D76:
	orrs r0, r1
	str r0, [r4, 0x8]
	ldr r0, [r4, 0x8]
	b _08000DF0
	.pool

_08000D88:
	mov r3, r10
	adds r0, r5, r3
	ldr r2, [r0]
	ldrh r4, [r1, 0x8]
	add r1, sp, 0x4
	cmp r4, r6
	bhi _08000DB2
	mov r0, r8
	adds r0, 0xC
	adds r0, r5, r0
	ldr r0, [r0]
	strh r0, [r1]
	str r1, [r7]
	str r2, [r7, 0x4]
	lsrs r0, r4, 1
	movs r1, 0x81
	lsls r1, 24
_08000DAA:
	orrs r0, r1
	str r0, [r7, 0x8]
	ldr r0, [r7, 0x8]
	b _08000DF0
_08000DB2:
	mov r5, r12
	ldrb r0, [r5]
	lsls r0, 4
	ldr r3, =gUnknown_0300001C
	adds r0, r3
	ldr r0, [r0]
	strh r0, [r1]
	ldr r3, =REG_DMA3
	str r1, [r3]
	str r2, [r3, 0x4]
	ldr r0, =0x81000800
	str r0, [r3, 0x8]
	ldr r0, [r3, 0x8]
	adds r2, r6
	subs r4, r6
	cmp r4, r6
	bhi _08000DB2
	ldrb r0, [r5]
	lsls r0, 4
	ldr r5, =gUnknown_0300001C
	adds r0, r5
	ldr r0, [r0]
	strh r0, [r1]
	str r1, [r3]
	str r2, [r3, 0x4]
	lsrs r0, r4, 1
	movs r1, 0x81
	lsls r1, 24
_08000DEA:
	orrs r0, r1
	str r0, [r3, 0x8]
	ldr r0, [r3, 0x8]
_08000DF0:
	ldr r1, =gDma3Requests
	mov r3, r12
	ldrb r0, [r3]
	lsls r0, 4
	adds r0, r1
	mov r2, r9
	str r2, [r0]
	ldrb r0, [r3]
	lsls r0, 4
	add r0, r10
	str r2, [r0]
	ldrb r0, [r3]
	lsls r0, 4
	adds r0, r1
	movs r4, 0
	strh r2, [r0, 0x8]
	ldrb r0, [r3]
	lsls r0, 4
	adds r0, r1
	mov r5, r9
	strh r5, [r0, 0xA]
	ldrb r0, [r3]
	lsls r0, 4
	adds r1, 0xC
	adds r0, r1
	mov r1, r9
	str r1, [r0]
	ldrb r0, [r3]
	adds r0, 0x1
	strb r0, [r3]
	lsls r0, 24
	cmp r0, 0
	bge _08000E34
	strb r4, [r3]
_08000E34:
	mov r2, r12
	ldrb r0, [r2]
	lsls r0, 4
	ldr r3, =gDma3Requests
	adds r0, r3
	ldrh r0, [r0, 0x8]
	cmp r0, 0
	beq _08000E46
	b _08000C2E
_08000E46:
	add sp, 0xC
	pop {r3-r5}
	mov r8, r3
	mov r9, r4
	mov r10, r5
	pop {r4-r7}
	pop {r0}
	bx r0
	.pool
	thumb_func_end ProcessDma3Requests
*/

compiler:
ProcessDma3Requests:
	push	{r4, r5, r6, r7, lr}
	mov	r7, sl
	mov	r6, r9
	mov	r5, r8
	push	{r5, r6, r7}
	add	sp, sp, #0xfffffff4
	ldr	r0, .L44
	ldrb	r0, [r0]
	cmp	r0, #0
	beq	.LCB60
	b	.L10	@long jump
.LCB60:
	mov	r0, #0x0
	str	r0, [sp, #0x8]
	ldr	r1, .L44+0x4
	ldr	r2, .L44+0x8
	ldrb	r0, [r2]
	lsl	r0, r0, #0x4
	add	r0, r0, r1
	ldrh	r0, [r0, #0x8]
	cmp	r0, #0
	bne	.LCB74
	b	.L10	@long jump
.LCB74:
	add	r1, r1, #0x4
	mov	sl, r1
	mov	r2, #0x80
	lsl	r2, r2, #0x5
	mov	r8, r2
	ldr	r0, .L44+0xc
	mov	ip, r0
	mov	r1, #0x0
	mov	r9, r1
.L14:
	ldr	r2, .L44+0x8
	ldrb	r0, [r2]
	lsl	r5, r0, #0x4
	ldr	r0, .L44+0x4
	add	r1, r5, r0
	ldrh	r0, [r1, #0x8]
	ldr	r2, [sp, #0x8]
	add	r0, r2, r0
	lsl	r0, r0, #0x10
	lsr	r0, r0, #0x10
	str	r0, [sp, #0x8]
	mov	r0, #0xa0
	lsl	r0, r0, #0x8
	ldr	r2, [sp, #0x8]
	cmp	r2, r0
	bls	.LCB109
	b	.L10	@long jump
.LCB109:
	ldr	r0, .L44+0x10
	ldrh	r0, [r0]
	cmp	r0, #0xe0
	bls	.LCB115
	b	.L10	@long jump
.LCB115:
	ldrh	r0, [r1, #0xa]
	cmp	r0, #0x2
	beq	.L23	@cond_branch
	cmp	r0, #0x2
	bgt	.L40	@cond_branch
	cmp	r0, #0x1
	beq	.L18	@cond_branch
	b	.L17
.L45:
	.align	2, 0
.L44:
	.word	gDma3ManagerLocked
	.word	gDma3Requests
	.word	gDma3RequestCursor
	.word	0x40000d4
	.word	0x4000006
.L40:
	cmp	r0, #0x3
	beq	.L28	@cond_branch
	cmp	r0, #0x4
	beq	.L33	@cond_branch
	b	.L17
.L18:
	ldrh	r4, [r1, #0x8]
	ldr	r2, [r1]
	mov	r1, sl
	add	r0, r5, r1
	ldr	r1, [r0]
	cmp	r4, r8
	bls	.L20	@cond_branch
	ldr	r5, .L46
	ldr	r6, .L46+0x4
	mov	r3, #0x80
	lsl	r3, r3, #0x5
.L21:
	str	r2, [r5]
	str	r1, [r5, #0x4]
	str	r6, [r5, #0x8]
	ldr	r0, [r5, #0x8]
	add	r2, r2, r3
	add	r1, r1, r3
	sub	r4, r4, r3
	cmp	r4, r3
	bhi	.L21	@cond_branch
.L20:
	mov	r0, ip
	str	r2, [r0]
	str	r1, [r0, #0x4]
	lsr	r0, r4, #0x2
	mov	r1, #0x84
	lsl	r1, r1, #0x18
	b	.L43
.L47:
	.align	2, 0
.L46:
	.word	0x40000d4
	.word	0x84000400
.L23:
	ldrh	r3, [r1, #0x8]
	mov	r2, sl
	add	r0, r5, r2
	ldr	r4, [r0]
	cmp	r3, r8
	bls	.L25	@cond_branch
	ldr	r0, .L48
	add	r6, r5, r0
	ldr	r1, .L48+0x4
	mov	r5, #0x80
	lsl	r5, r5, #0x5
	ldr	r2, .L48+0x8
.L26:
	ldr	r0, [r6]
	str	r0, [sp]
	mov	r0, sp
	str	r0, [r1]
	str	r4, [r1, #0x4]
	str	r2, [r1, #0x8]
	ldr	r0, [r1, #0x8]
	add	r4, r4, r5
	sub	r3, r3, r5
	cmp	r3, r5
	bhi	.L26	@cond_branch
.L25:
	ldr	r1, .L48+0xc
	ldrb	r0, [r1]
	lsl	r0, r0, #0x4
	ldr	r2, .L48
	add	r0, r0, r2
	ldr	r0, [r0]
	str	r0, [sp]
	mov	r0, sp
	mov	r1, ip
	str	r0, [r1]
	str	r4, [r1, #0x4]
	lsr	r0, r3, #0x2
	mov	r1, #0x85
	lsl	r1, r1, #0x18
	orr	r0, r0, r1
	mov	r2, ip
	str	r0, [r2, #0x8]
	ldr	r0, [r2, #0x8]
	b	.L17
.L49:
	.align	2, 0
.L48:
	.word	gDma3Requests+0xc
	.word	0x40000d4
	.word	0x85000400
	.word	gDma3RequestCursor
.L28:
	ldrh	r4, [r1, #0x8]
	ldr	r2, [r1]
	mov	r1, sl
	add	r0, r5, r1
	ldr	r1, [r0]
	cmp	r4, r8
	bls	.L30	@cond_branch
	ldr	r5, .L50
	ldr	r6, .L50+0x4
	mov	r3, #0x80
	lsl	r3, r3, #0x5
.L31:
	str	r2, [r5]
	str	r1, [r5, #0x4]
	str	r6, [r5, #0x8]
	ldr	r0, [r5, #0x8]
	add	r2, r2, r3
	add	r1, r1, r3
	sub	r4, r4, r3
	cmp	r4, r3
	bhi	.L31	@cond_branch
.L30:
	mov	r0, ip
	str	r2, [r0]
	str	r1, [r0, #0x4]
	lsr	r0, r4, #0x1
	mov	r1, #0x80
	lsl	r1, r1, #0x18
	b	.L43
.L51:
	.align	2, 0
.L50:
	.word	0x40000d4
	.word	0x80000800
.L33:
	ldrh	r3, [r1, #0x8]
	mov	r2, sl
	add	r0, r5, r2
	ldr	r4, [r0]
	add	r2, sp, #0x4
	cmp	r3, r8
	bls	.L35	@cond_branch
	add	r6, r2, #0
	ldr	r0, .L52
	add	r5, r5, r0
	ldr	r1, .L52+0x4
	ldr	r7, .L52+0x8
.L36:
	ldr	r0, [r5]
	strh	r0, [r6]
	str	r6, [r1]
	str	r4, [r1, #0x4]
	str	r7, [r1, #0x8]
	ldr	r0, [r1, #0x8]
	add	r4, r4, r8
	mov	r0, r8
	sub	r3, r3, r0
	cmp	r3, r8
	bhi	.L36	@cond_branch
.L35:
	ldr	r1, .L52+0xc
	ldrb	r0, [r1]
	lsl	r0, r0, #0x4
	ldr	r1, .L52
	add	r0, r0, r1
	ldr	r0, [r0]
	strh	r0, [r2]
	mov	r0, ip
	str	r2, [r0]
	str	r4, [r0, #0x4]
	lsr	r0, r3, #0x1
	mov	r1, #0x81
	lsl	r1, r1, #0x18
.L43:
	orr	r0, r0, r1
	mov	r1, ip
	str	r0, [r1, #0x8]
	ldr	r0, [r1, #0x8]
.L17:
	ldr	r1, .L52+0x10
	ldr	r3, .L52+0xc
	ldrb	r0, [r3]
	lsl	r0, r0, #0x4
	add	r0, r0, r1
	mov	r2, r9
	str	r2, [r0]
	ldrb	r0, [r3]
	lsl	r0, r0, #0x4
	add	r0, r0, sl
	str	r2, [r0]
	ldrb	r0, [r3]
	lsl	r0, r0, #0x4
	add	r0, r0, r1
	mov	r4, #0x0
	strh	r2, [r0, #0x8]
	ldrb	r0, [r3]
	lsl	r0, r0, #0x4
	add	r0, r0, r1
	mov	r1, r9
	strh	r1, [r0, #0xa]
	ldrb	r0, [r3]
	lsl	r0, r0, #0x4
	ldr	r2, .L52
	add	r0, r0, r2
	mov	r1, r9
	str	r1, [r0]
	ldrb	r0, [r3]
	add	r0, r0, #0x1
	strb	r0, [r3]
	lsl	r0, r0, #0x18
	cmp	r0, #0
	bge	.L12	@cond_branch
	strb	r4, [r3]
.L12:
	ldr	r2, .L52+0xc
	ldrb	r0, [r2]
	lsl	r0, r0, #0x4
	ldr	r1, .L52+0x10
	add	r0, r0, r1
	ldrh	r0, [r0, #0x8]
	cmp	r0, #0
	beq	.LCB428
	b	.L14	@long jump
.LCB428:
.L10:
	add	sp, sp, #0xc
	pop	{r3, r4, r5}
	mov	r8, r3
	mov	r9, r4
	mov	sl, r5
	pop	{r4, r5, r6, r7}
	pop	{r0}
	bx	r0
.L53:
	.align	2, 0
.L52:
	.word	gDma3Requests+0xc
	.word	0x40000d4
	.word	0x81000800
	.word	gDma3RequestCursor
	.word	gDma3Requests
.Lfe2:
	.size	 ProcessDma3Requests,.Lfe2-ProcessDma3Requests
.text
	.align	2, 0