From 8986fddc2bab92bd7d77a123ac70c4fb70c96c7c Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Tue, 14 Jun 2011 11:29:48 +0100 Subject: ARM: allow building in Thumb2 mode Signed-off-by: Mans Rullgard --- libavcodec/arm/simple_idct_arm.S | 32 ++++++++++++++++++++++++++------ 1 file changed, 26 insertions(+), 6 deletions(-) (limited to 'libavcodec/arm/simple_idct_arm.S') diff --git a/libavcodec/arm/simple_idct_arm.S b/libavcodec/arm/simple_idct_arm.S index 4e6dfa4..717b12c 100644 --- a/libavcodec/arm/simple_idct_arm.S +++ b/libavcodec/arm/simple_idct_arm.S @@ -121,11 +121,13 @@ __b_evaluation: ldr r11, [r12, #offW7] @ R11=W7 mul r5, r10, r7 @ R5=W5*ROWr16[1]=b2 (ROWr16[1] must be the second arg, to have the possibility to save 1 cycle) mul r7, r11, r7 @ R7=W7*ROWr16[1]=b3 (ROWr16[1] must be the second arg, to have the possibility to save 1 cycle) - teq r2, #0 @ if null avoid muls - mlane r0, r9, r2, r0 @ R0+=W3*ROWr16[3]=b0 (ROWr16[3] must be the second arg, to have the possibility to save 1 cycle) + teq r2, #0 @ if null avoid muls + itttt ne + mlane r0, r9, r2, r0 @ R0+=W3*ROWr16[3]=b0 (ROWr16[3] must be the second arg, to have the possibility to save 1 cycle) rsbne r2, r2, #0 @ R2=-ROWr16[3] mlane r1, r11, r2, r1 @ R1-=W7*ROWr16[3]=b1 (ROWr16[3] must be the second arg, to have the possibility to save 1 cycle) mlane r5, r8, r2, r5 @ R5-=W1*ROWr16[3]=b2 (ROWr16[3] must be the second arg, to have the possibility to save 1 cycle) + it ne mlane r7, r10, r2, r7 @ R7-=W5*ROWr16[3]=b3 (ROWr16[3] must be the second arg, to have the possibility to save 1 cycle) @@ at this point, R0=b0, R1=b1, R2 (free), R3=ROWr32[2], R4=ROWr32[3], @@ -148,19 +150,23 @@ __b_evaluation: @@ MAC16(b3, -W1, row[7]); @@ MAC16(b1, -W5, row[7]); mov r3, r3, asr #16 @ R3=ROWr16[5] - teq r3, #0 @ if null avoid muls + teq r3, #0 @ if null avoid muls + it ne mlane r0, r10, r3, r0 @ R0+=W5*ROWr16[5]=b0 mov r4, r4, asr #16 @ R4=ROWr16[7] + itttt ne mlane r5, r11, r3, r5 @ R5+=W7*ROWr16[5]=b2 mlane r7, r9, r3, r7 @ R7+=W3*ROWr16[5]=b3 rsbne r3, r3, #0 @ R3=-ROWr16[5] mlane r1, r8, r3, r1 @ R7-=W1*ROWr16[5]=b1 @@ R3 is free now - teq r4, #0 @ if null avoid muls + teq r4, #0 @ if null avoid muls + itttt ne mlane r0, r11, r4, r0 @ R0+=W7*ROWr16[7]=b0 mlane r5, r9, r4, r5 @ R5+=W3*ROWr16[7]=b2 rsbne r4, r4, #0 @ R4=-ROWr16[7] mlane r7, r8, r4, r7 @ R7-=W1*ROWr16[7]=b3 + it ne mlane r1, r10, r4, r1 @ R1-=W5*ROWr16[7]=b1 @@ R4 is free now __end_b_evaluation: @@ -204,16 +210,19 @@ __a_evaluation: @@ a2 -= W4*row[4] @@ a3 += W4*row[4] ldrsh r11, [r14, #8] @ R11=ROWr16[4] - teq r11, #0 @ if null avoid muls + teq r11, #0 @ if null avoid muls + it ne mulne r11, r9, r11 @ R11=W4*ROWr16[4] @@ R9 is free now ldrsh r9, [r14, #12] @ R9=ROWr16[6] + itttt ne addne r6, r6, r11 @ R6+=W4*ROWr16[4] (a0) subne r2, r2, r11 @ R2-=W4*ROWr16[4] (a1) subne r3, r3, r11 @ R3-=W4*ROWr16[4] (a2) addne r4, r4, r11 @ R4+=W4*ROWr16[4] (a3) @@ W6 alone is no more useful, save W2*ROWr16[6] in it instead - teq r9, #0 @ if null avoid muls + teq r9, #0 @ if null avoid muls + itttt ne mulne r11, r10, r9 @ R11=W6*ROWr16[6] addne r6, r6, r11 @ R6+=W6*ROWr16[6] (a0) mulne r10, r8, r9 @ R10=W2*ROWr16[6] @@ -222,6 +231,7 @@ __a_evaluation: @@ a1 -= W2*row[6]; @@ a2 += W2*row[6]; subne r4, r4, r11 @ R4-=W6*ROWr16[6] (a3) + itt ne subne r2, r2, r10 @ R2-=W2*ROWr16[6] (a1) addne r3, r3, r10 @ R3+=W2*ROWr16[6] (a2) @@ -323,10 +333,12 @@ __b_evaluation2: ldrsh r2, [r14, #48] mul r7, r11, r7 @ R7=W7*ROWr16[1]=b3 (ROWr16[1] must be the second arg, to have the possibility to save 1 cycle) teq r2, #0 @ if 0, then avoid muls + itttt ne mlane r0, r9, r2, r0 @ R0+=W3*ROWr16[3]=b0 (ROWr16[3] must be the second arg, to have the possibility to save 1 cycle) rsbne r2, r2, #0 @ R2=-ROWr16[3] mlane r1, r11, r2, r1 @ R1-=W7*ROWr16[3]=b1 (ROWr16[3] must be the second arg, to have the possibility to save 1 cycle) mlane r5, r8, r2, r5 @ R5-=W1*ROWr16[3]=b2 (ROWr16[3] must be the second arg, to have the possibility to save 1 cycle) + it ne mlane r7, r10, r2, r7 @ R7-=W5*ROWr16[3]=b3 (ROWr16[3] must be the second arg, to have the possibility to save 1 cycle) @@ at this point, R0=b0, R1=b1, R2 (free), R3 (free), R4 (free), @@ -342,18 +354,22 @@ __b_evaluation2: @@ MAC16(b1, -W5, col[7x8]); ldrsh r3, [r14, #80] @ R3=COLr16[5x8] teq r3, #0 @ if 0 then avoid muls + itttt ne mlane r0, r10, r3, r0 @ R0+=W5*ROWr16[5x8]=b0 mlane r5, r11, r3, r5 @ R5+=W7*ROWr16[5x8]=b2 mlane r7, r9, r3, r7 @ R7+=W3*ROWr16[5x8]=b3 rsbne r3, r3, #0 @ R3=-ROWr16[5x8] ldrsh r4, [r14, #112] @ R4=COLr16[7x8] + it ne mlane r1, r8, r3, r1 @ R7-=W1*ROWr16[5x8]=b1 @@ R3 is free now teq r4, #0 @ if 0 then avoid muls + itttt ne mlane r0, r11, r4, r0 @ R0+=W7*ROWr16[7x8]=b0 mlane r5, r9, r4, r5 @ R5+=W3*ROWr16[7x8]=b2 rsbne r4, r4, #0 @ R4=-ROWr16[7x8] mlane r7, r8, r4, r7 @ R7-=W1*ROWr16[7x8]=b3 + it ne mlane r1, r10, r4, r1 @ R1-=W5*ROWr16[7x8]=b1 @@ R4 is free now __end_b_evaluation2: @@ -390,15 +406,18 @@ __a_evaluation2: @@ a3 += W4*row[4] ldrsh r11, [r14, #64] @ R11=ROWr16[4] teq r11, #0 @ if null avoid muls + itttt ne mulne r11, r9, r11 @ R11=W4*ROWr16[4] @@ R9 is free now addne r6, r6, r11 @ R6+=W4*ROWr16[4] (a0) subne r2, r2, r11 @ R2-=W4*ROWr16[4] (a1) subne r3, r3, r11 @ R3-=W4*ROWr16[4] (a2) ldrsh r9, [r14, #96] @ R9=ROWr16[6] + it ne addne r4, r4, r11 @ R4+=W4*ROWr16[4] (a3) @@ W6 alone is no more useful, save W2*ROWr16[6] in it instead teq r9, #0 @ if null avoid muls + itttt ne mulne r11, r10, r9 @ R11=W6*ROWr16[6] addne r6, r6, r11 @ R6+=W6*ROWr16[6] (a0) mulne r10, r8, r9 @ R10=W2*ROWr16[6] @@ -407,6 +426,7 @@ __a_evaluation2: @@ a1 -= W2*row[6]; @@ a2 += W2*row[6]; subne r4, r4, r11 @ R4-=W6*ROWr16[6] (a3) + itt ne subne r2, r2, r10 @ R2-=W2*ROWr16[6] (a1) addne r3, r3, r10 @ R3+=W2*ROWr16[6] (a2) __end_a_evaluation2: -- cgit v1.1