diff options
Diffstat (limited to 'backends/platform/ds/arm9/source/blitters_arm.s')
-rw-r--r-- | backends/platform/ds/arm9/source/blitters_arm.s | 216 |
1 files changed, 131 insertions, 85 deletions
diff --git a/backends/platform/ds/arm9/source/blitters_arm.s b/backends/platform/ds/arm9/source/blitters_arm.s index be777993ab..93d5db7ea9 100644 --- a/backends/platform/ds/arm9/source/blitters_arm.s +++ b/backends/platform/ds/arm9/source/blitters_arm.s @@ -24,10 +24,10 @@ .global asmCopy8Col .global Rescale_320x256xPAL8_To_256x256x1555 .global Rescale_320x256x1555_To_256x256x1555 - .section .itcm,"ax", %progbits - .align 2 - .code 32 - + .section .itcm,"ax", %progbits + .align 2 + .code 32 + @ ARM implementation of asmDrawStripToScreen. @ @ C prototype would be: @@ -258,11 +258,11 @@ Rescale_320x256xPAL8_To_256x256x1555: @ r1 = src @ r2 = dstStride @ r3 = srcStride - STMFD r13!,{r4-r6,r8-r11,r14} + STMFD r13!,{r4-r11,r14} MOV r8, #0x0000001F ORR r8, r8,#0x0000FC00 ORR r8, r8,#0x03E00000 @ r8 = mask - LDR r9, [r13,#8*4] @ r9 = palette + LDR r9, [r13,#9*4] @ r9 = palette SUB r13,r13,#256*4 @ r13 = 1K of space on the stack. MOV r5, r13 @ r5 points to this space @@ -279,86 +279,134 @@ palLoop: SUB r2,r2,#64*4 @ srcStride -= line length SUB r3,r3,#64*5 @ dstStride -= line length + MOV r14,#0xFF @ r14= 255 MOV r5,#200 @ r5 = y yLoop4: - MOV r4,#32 @ r4 = x + MOV r4,#16 @ r4 = x xLoop4: - LDRH r9, [r1],#2 - LDRH r11,[r1],#2 - LDRH r6,[r1],#2 - MOV r10,r9, LSR #8 - AND r9, r9, #0xFF - MOV r12,r11,LSR #8 - AND r11,r11,#0xFF - AND r14,r6,#0xFF - - LDR r9, [r13,r9, LSL #2] @ r9 = pal[src0] - LDR r10,[r13,r10,LSL #2] @ r10= pal[src1] - LDR r11,[r13,r11,LSL #2] @ r11= pal[src2] - LDR r12,[r13,r12,LSL #2] @ r12= pal[src3] - LDR r14,[r13,r14,LSL #2] @ r13= pal[src4] - - ADD r9, r9, r9, LSL #1 @ r9 = 3*src0 - ADD r9, r9, r10 @ r9 = dst0<<2 - ADD r10,r10,r11 @ r10= dst1 - ADD r11,r11,r12 @ r11= dst2 - ADD r12,r12,r14 @ r12= src3 + src4 - ADD r12,r12,r14,LSL #1 @ r12= src3 + src4*3 = dst3<<2 - - AND r9, r8, r9, LSR #2 @ r9 = dst0 (split) - AND r10,r8, r10,LSR #1 @ r10= dst1 (split) - AND r11,r8, r11,LSR #1 @ r11= dst2 (split) - AND r12,r8, r12,LSR #2 @ r12= dst3 (split) - - ORR r9, r9, r9, ROR #16 @ r9 = dst0 - ORR r10,r10,r10,ROR #16 @ r10= dst1 - ORR r11,r11,r11,ROR #16 @ r11= dst2 - ORR r12,r12,r12,ROR #16 @ r12= dst3 - - MOV r10,r10,LSL #16 - ORR r9, r10,r9, LSR #16 - MOV r12,r12,LSL #16 - ORR r11,r12,r11,LSR #16 - STMIA r0!,{r9,r11} - - LDRH r10,[r1],#2 - LDRH r12,[r1],#2 - MOV r9,r6,LSR #8 - MOV r11,r10,LSR #8 - AND r10,r10,#0xFF - MOV r14,r12,LSR #8 - AND r12,r12,#0xFF - - LDR r9, [r13,r9, LSL #2] @ r9 = pal[src0] - LDR r10,[r13,r10,LSL #2] @ r10= pal[src1] - LDR r11,[r13,r11,LSL #2] @ r11= pal[src2] - LDR r12,[r13,r12,LSL #2] @ r12= pal[src3] - LDR r14,[r13,r14,LSL #2] @ r13= pal[src4] - - ADD r9, r9, r9, LSL #1 @ r9 = 3*src0 - ADD r9, r9, r10 @ r9 = dst0<<2 - ADD r10,r10,r11 @ r10= dst1 - ADD r11,r11,r12 @ r11= dst2 - ADD r12,r12,r14 @ r12= src3 + src4 - ADD r12,r12,r14,LSL #1 @ r12= src3 + src4*3 = dst3<<2 - - AND r9, r8, r9, LSR #2 @ r9 = dst0 (split) - AND r10,r8, r10,LSR #1 @ r10= dst1 (split) - AND r11,r8, r11,LSR #1 @ r11= dst2 (split) - AND r12,r8, r12,LSR #2 @ r12= dst3 (split) - - ORR r9, r9, r9, ROR #16 @ r9 = dst0 - ORR r10,r10,r10,ROR #16 @ r10= dst1 - ORR r11,r11,r11,ROR #16 @ r11= dst2 - ORR r12,r12,r12,ROR #16 @ r12= dst3 - - MOV r10,r10,LSL #16 - ORR r9, r10,r9, LSR #16 - MOV r12,r12,LSL #16 - ORR r11,r12,r11,LSR #16 - STMIA r0!,{r9,r11} - + LDMIA r1!,{r10,r11,r12} + AND r6, r14,r10 @ r6 = src0 + LDR r6, [r13,r6, LSL #2] @ r6 = pal[src0] + AND r7, r14,r10,LSR #8 @ r7 = src1 + LDR r7, [r13,r7, LSL #2] @ r7 = pal[src1] + ADD r6, r6, r6, LSL #1 @ r6 = 3*pal[src0] + AND r9, r14,r10,LSR #16 @ r9 = src2 + LDR r9, [r13,r9, LSL #2] @ r9 = pal[src2] + MOV r10,r10,LSR #24 @ r10= src3 + LDR r10,[r13,r10,LSL #2] @ r10= pal[src3] + ADD r6, r6, r7 @ r6 = dst0<<2 + AND r6, r8, r6, LSR #2 @ r6 = dst0 (split) + ORR r6, r6, r6, ROR #16 @ r6 = dst0 (in both halves) + ADD r7, r7, r9 @ r7 = dst1<<1 + AND r7, r8, r7, LSR #1 @ r7 = dst1 (split) + ORR r7, r7, r7, ROR #16 @ r7 = dst1 (in both halves) + MOV r7, r7, LSL #16 @ r7 = dst1<<16 + ORR r6, r7, r6, LSR #16 @ r6 = dst0 | dst1<<16 + AND r7, r14,r11 @ r7 = src4 + LDR r7, [r13,r7, LSL #2] @ r7 = pal[src4] + ADD r9, r9, r10 @ r9 = dst2<<1 + AND r9, r8, r9, LSR #1 @ r9 = dst2 (split) + ORR r9, r9, r9, ROR #16 @ r9 = dst2 (in both halves) + ADD r10,r10,r7 @ r7 = pal[src3]+pal[src4] + ADD r10,r10,r7, LSL #1 @ r10= dst3<<2 + AND r10,r8, r10,LSR #2 @ r10= dst3 (split) + ORR r10,r10,r10,ROR #16 @ r10= dst3 (in both halves) + MOV r7, r9, LSR #16 + ORR r7, r7, r10, LSL #16 @ r7 = dst2 | dst3<<16 + STMIA r0!,{r6,r7} + + AND r6, r14,r11,LSR #8 @ r6 = src5 + LDR r6, [r13,r6, LSL #2] @ r6 = pal[src5] + AND r7, r14,r11,LSR #16 @ r7 = src6 + LDR r7, [r13,r7, LSL #2] @ r7 = pal[src6] + ADD r6, r6, r6, LSL #1 @ r6 = 3*pal[src5] + MOV r9, r11,LSR #24 @ r9 = src7 + LDR r9, [r13,r9, LSL #2] @ r9 = pal[src7] + AND r10,r14,r12 @ r10= src8 + LDR r10,[r13,r10,LSL #2] @ r10= pal[src8] + ADD r6, r6, r7 @ r6 = dst4<<2 + AND r6, r8, r6, LSR #2 @ r6 = dst4 (split) + ORR r6, r6, r6, ROR #16 @ r6 = dst4 (in both halves) + ADD r7, r7, r9 @ r7 = dst5<<1 + AND r7, r8, r7, LSR #1 @ r7 = dst5 (split) + ORR r7, r7, r7, ROR #16 @ r7 = dst5 (in both halves) + MOV r7, r7, LSL #16 @ r7 = dst5<<16 + ORR r6, r7, r6, LSR #16 @ r6 = dst4 | dst5<<16 + AND r7, r14,r12,LSR #8 @ r7 = src9 + LDR r7, [r13,r7, LSL #2] @ r7 = pal[src9] + ADD r9, r9, r10 @ r9 = dst6<<1 + AND r9, r8, r9, LSR #1 @ r9 = dst6 (split) + ORR r9, r9, r9, ROR #16 @ r9 = dst6 (in both halves) + ADD r10,r10,r7 @ r10= pal[src8]+pal[src9] + ADD r10,r10,r7, LSL #1 @ r10= dst7<<2 + AND r10,r8, r10,LSR #2 @ r10= dst7 (split) + ORR r10,r10,r10,ROR #16 @ r10= dst7 (in both halves) + MOV r7, r9, LSR #16 + ORR r7, r7, r10, LSL #16 @ r7 = dst6 | dst7<<16 + LDMIA r1!,{r10,r11} SUBS r4,r4,#1 + STMIA r0!,{r6,r7} + + AND r6, r14,r12,LSR #16 @ r6 = src10 + LDR r6, [r13,r6, LSL #2] @ r6 = pal[src10] + MOV r7, r12,LSR #24 @ r7 = src11 + LDR r7, [r13,r7, LSL #2] @ r7 = pal[src11] + ADD r6, r6, r6, LSL #1 @ r6 = 3*pal[src10] + AND r9, r14,r10 @ r9 = src12 + LDR r9, [r13,r9, LSL #2] @ r9 = pal[src12] + AND r12,r14,r10,LSR #8 @ r11= src13 + LDR r12,[r13,r12,LSL #2] @ r11= pal[src13] + ADD r6, r6, r7 @ r6 = dst8<<2 + AND r6, r8, r6, LSR #2 @ r6 = dst8 (split) + ORR r6, r6, r6, ROR #16 @ r6 = dst8 (in both halves) + ADD r7, r7, r9 @ r7 = dst9<<1 + AND r7, r8, r7, LSR #1 @ r7 = dst9 (split) + ORR r7, r7, r7, ROR #16 @ r7 = dst9 (in both halves) + MOV r7, r7, LSL #16 @ r7 = dst9<<16 + ORR r6, r7, r6, LSR #16 @ r6 = dst8 | dst9<<16 + AND r7, r14,r10,LSR #16 @ r7 = src14 + LDR r7, [r13,r7, LSL #2] @ r7 = pal[src14] + ADD r9, r9, r12 @ r9 = dst10<<1 + AND r9, r8, r9, LSR #1 @ r9 = dst10 (split) + ORR r9, r9, r9, ROR #16 @ r9 = dst10 (in both halves) + ADD r12,r12,r7 @ r12= pal[src13]+pal[src14] + ADD r12,r12,r7, LSL #1 @ r12= dst11<<2 + AND r12,r8, r12,LSR #2 @ r12= dst11 (split) + ORR r12,r12,r12,ROR #16 @ r12= dst11 (in both halves) + MOV r7, r9, LSR #16 + ORR r7, r7, r12, LSL #16 @ r7 = dst10 | dst11<<16 + STMIA r0!,{r6,r7} + + MOV r6, r10,LSR #24 @ r6 = src15 + LDR r6, [r13,r6, LSL #2] @ r6 = pal[src15] + AND r7, r14,r11 @ r7 = src16 + LDR r7, [r13,r7, LSL #2] @ r7 = pal[src16] + ADD r6, r6, r6, LSL #1 @ r6 = 3*pal[src15] + AND r9, r14,r11,LSR #8 @ r9 = src17 + LDR r9, [r13,r9, LSL #2] @ r9 = pal[src17] + AND r12,r14,r11,LSR #16 @ r11= src18 + LDR r12,[r13,r12,LSL #2] @ r11= pal[src18] + ADD r6, r6, r7 @ r6 = dst12<<2 + AND r6, r8, r6, LSR #2 @ r6 = dst12 (split) + ORR r6, r6, r6, ROR #16 @ r6 = dst12 (in both halves) + ADD r7, r7, r9 @ r7 = dst13<<1 + AND r7, r8, r7, LSR #1 @ r7 = dst13 (split) + ORR r7, r7, r7, ROR #16 @ r7 = dst13 (in both halves) + MOV r7, r7, LSL #16 @ r7 = dst13<<16 + ORR r6, r7, r6, LSR #16 @ r6 = dst12 | dst13<<16 + MOV r7, r11,LSR #24 @ r7 = src19 + LDR r7, [r13,r7, LSL #2] @ r7 = pal[src19] + ADD r9, r9, r12 @ r9 = dst14<<1 + AND r9, r8, r9, LSR #1 @ r9 = dst14 (split) + ORR r9, r9, r9, ROR #16 @ r9 = dst14 (in both halves) + ADD r12,r12,r7 @ r12= pal[src18]+pal[src19] + ADD r12,r12,r7, LSL #1 @ r12= dst15<<2 + AND r12,r8, r12,LSR #2 @ r12= dst15 (split) + ORR r12,r12,r12,ROR #16 @ r12= dst15 (in both halves) + MOV r7, r9, LSR #16 + ORR r7, r7, r12, LSL #16 @ r7 = dst14 | dst15<<16 + STMIA r0!,{r6,r7} + BGT xLoop4 ADD r0,r0,r2,LSL #1 @@ -368,6 +416,4 @@ xLoop4: ADD r13,r13,#256*4 - LDMFD r13!,{r4-r6,r8-r11,PC} - - + LDMFD r13!,{r4-r11,PC} |