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| author | Bertrand Augereau | 2007-12-10 01:25:18 +0000 |
|---|---|---|
| committer | Bertrand Augereau | 2007-12-10 01:25:18 +0000 |
| commit | 209ebf33830c02f771888bebb3cd210ecbfe2fd7 (patch) | |
| tree | 14c5d5b438cf5682ca96415409c18f57fc1e98ed /backends/platform | |
| parent | e946eff2059e6b8b72b0a08e0df8017ace824a41 (diff) | |
| download | scummvm-rg350-209ebf33830c02f771888bebb3cd210ecbfe2fd7.tar.gz scummvm-rg350-209ebf33830c02f771888bebb3cd210ecbfe2fd7.tar.bz2 scummvm-rg350-209ebf33830c02f771888bebb3cd210ecbfe2fd7.zip | |
NDS: Integrated Robin's LDRB * 2 -> LDRH + fixes(endianness & stack space) 14ms -> 13ms
svn-id: r29809
Diffstat (limited to 'backends/platform')
| -rw-r--r-- | backends/platform/ds/arm9/source/blitters_arm.s | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/backends/platform/ds/arm9/source/blitters_arm.s b/backends/platform/ds/arm9/source/blitters_arm.s index 768724a187..30b45e36b1 100644 --- a/backends/platform/ds/arm9/source/blitters_arm.s +++ b/backends/platform/ds/arm9/source/blitters_arm.s @@ -257,11 +257,11 @@ Rescale_320x256xPAL8_To_256x256x1555: @ r1 = src @ r2 = dstStride @ r3 = srcStride - STMFD r13!,{r4-r5,r8-r11,r14} + STMFD r13!,{r4-r6,r8-r11,r14} MOV r8, #0x0000001F ORR r8, r8,#0x0000FC00 ORR r8, r8,#0x03E00000 @ r8 = mask - LDR r9, [r13,#7*4] @ r9 = palette + LDR r9, [r13,#8*4] @ r9 = palette SUB r13,r13,#256*4 @ r13 = 1K of space on the stack. MOV r5, r13 @ r5 points to this space @@ -283,12 +283,13 @@ yLoop4: MOV r4,#32 @ r4 = x xLoop4: LDRH r9, [r1],#2 - MOV r10, r9, LSR #8 - AND r9, r9, #0xFF LDRH r11,[r1],#2 - MOV r12, r11, LSR #8 - AND r11, r11, #0xFF - LDRB r14,[r1],#1 + 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] @@ -319,13 +320,13 @@ xLoop4: ORR r11,r12,r11,LSR #16 STMIA r0!,{r9,r11} - LDRB r9, [r1],#1 LDRH r10,[r1],#2 - MOV r11, r10, LSR #8 - AND r10, r10, #0xFF LDRH r12,[r1],#2 - MOV r14, r12, LSR #8 - AND r12, r12, #0xFF + 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] @@ -366,6 +367,6 @@ xLoop4: ADD r13,r13,#256*4 - LDMFD r13!,{r4-r5,r8-r11,PC} + LDMFD r13!,{r4-r6,r8-r11,PC} |