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Speed up the predictor a little by using ldrd/strd on ARMv5+. This required shuffling around the register allocation somewhat. Performance on ARMv4 is unaffected.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19248 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2008-11-27 20:52:23 +00:00
parent 92f34edf70
commit 6d34e33b94
1 changed files with 163 additions and 141 deletions
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304
apps/codecs/demac/libdemac/predictor-arm.S
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@ -61,6 +61,30 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
#define historybuffer 100 /* int32_t historybuffer[] */
@ Macro for loading 2 registers, for various ARM versions.
@ Registers must start with an even register, and must be consecutive.
.macro LDR2OFS reg1, reg2, base, offset
#if ARM_ARCH >= 5
ldrd \reg1, [\base, \offset]
#else
add \reg1, \base, \offset
ldmia \reg1, {\reg1, \reg2}
#endif
.endm
@ Macro for storing 2 registers, for various ARM versions.
@ Registers must start with an even register, and must be consecutive.
.macro STR2OFS reg1, reg2, base, offset, scratch
#if ARM_ARCH >= 5
strd \reg1, [\base, \offset]
#else
add \scratch, \base, \offset
stmia \scratch, {\reg1, \reg2}
#endif
.endm
@ Register usage:
@
@ r0-r11 - scratch
@ -88,91 +112,90 @@ loop:
@ Predictor Y, Filter A
ldr r10, [r12, #YlastA] @ r10 := p->YlastA
ldr r11, [r12, #YlastA] @ r11 := p->YlastA
add r11, r14, #YDELAYA-12 @ r11 := &p->buf[YDELAYA-3]
ldmia r11, { r2 - r4 } @ r2 := p->buf[YDELAYA-3]
add r2, r14, #YDELAYA-12 @ r2 := &p->buf[YDELAYA-3]
ldmia r2, {r2, r3, r10} @ r2 := p->buf[YDELAYA-3]
@ r3 := p->buf[YDELAYA-2]
@ r4 := p->buf[YDELAYA-1]
@ r10 := p->buf[YDELAYA-1]
add r11, r12, #YcoeffsA
ldmia r11, {r6 - r9} @ r6 := p->YcoeffsA[0]
add r6, r12, #YcoeffsA
ldmia r6, {r6 - r9} @ r6 := p->YcoeffsA[0]
@ r7 := p->YcoeffsA[1]
@ r8 := p->YcoeffsA[2]
@ r9 := p->YcoeffsA[3]
subs r4, r10, r4 @ r4 := r10 - r4
subs r10, r11, r10 @ r10 := r11 - r10
add r11, r14, #YDELAYA-4 @ r11 := &p->buf[YDELAYA-1]
stmia r11, { r4, r10 } @ p->buf[YDELAYA-1] = r4
@ p->buf[YDELAYA] = r10
STR2OFS r10, r11, r14, #YDELAYA-4, r1 @ r1 -> scratch
@ p->buf[YDELAYA-1] = r10
@ p->buf[YDELAYA] = r11
mul r0, r10, r6 @ r0 := p->buf[YDELAYA] * p->YcoeffsA[0]
mla r0, r4, r7, r0 @ r0 += p->buf[YDELAYA-1] * p->YcoeffsA[1]
mul r0, r11, r6 @ r0 := p->buf[YDELAYA] * p->YcoeffsA[0]
mla r0, r10, r7, r0 @ r0 += p->buf[YDELAYA-1] * p->YcoeffsA[1]
mla r0, r3, r8, r0 @ r0 += p->buf[YDELAYA-2] * p->YcoeffsA[2]
mla r0, r2, r9, r0 @ r0 += p->buf[YDELAYA-3] * p->YcoeffsA[3]
@ flags were set above, in the subs instruction
mvngt r4, #0
movlt r4, #1 @ r4 := SIGN(r4) (see .c for SIGN macro)
cmp r10, #0
mvngt r10, #0
movlt r10, #1 @ r10 := SIGN(r10) (see .c for SIGN macro)
add r1, r14, #YADAPTCOEFFSA-4
stmia r1, {r4, r10} @ p->buf[YADAPTCOEFFSA-1] := r4
@ p->buf[YADAPTCOEFFSA] := r10
cmp r11, #0
mvngt r11, #0
movlt r11, #1 @ r11 := SIGN(r11) (see .c for SIGN macro)
STR2OFS r10, r11, r14, #YADAPTCOEFFSA-4, r1 @r1 -> scratch
@ p->buf[YADAPTCOEFFSA-1] := r10
@ p->buf[YADAPTCOEFFSA] := r11
@ NOTE: r0 now contains predictionA - don't overwrite.
@ Predictor Y, Filter B
add r11, r12, #YfilterB
ldmia r11, {r6, r7} @ r6 := p->YfilterB
LDR2OFS r6, r7, r12, #YfilterB @ r6 := p->YfilterB
@ r7 := p->XfilterA
add r11, r14, #YDELAYB-16 @ r11 := &p->buf[YDELAYB-4]
ldmia r11, { r2 - r5 } @ r2 := p->buf[YDELAYB-4]
add r2, r14, #YDELAYB-16 @ r2 := &p->buf[YDELAYB-4]
ldmia r2, {r2 - r4, r10} @ r2 := p->buf[YDELAYB-4]
@ r3 := p->buf[YDELAYB-3]
@ r4 := p->buf[YDELAYB-2]
@ r5 := p->buf[YDELAYB-1]
@ r10 := p->buf[YDELAYB-1]
rsb r6, r6, r6, lsl #5 @ r6 := r6 * 32 - r6 ( == r6*31)
sub r10, r7, r6, asr #5 @ r10 (p->buf[YDELAYB]) := r7 - (r6 >> 5)
sub r11, r7, r6, asr #5 @ r11 (p->buf[YDELAYB]) := r7 - (r6 >> 5)
str r7, [r12, #YfilterB] @ p->YfilterB := r7 (p->XfilterA)
add r1, r12, #YcoeffsB
ldmia r1, {r6,r7,r8,r9,r11} @ r6 := p->YcoeffsB[0]
@ r7 := p->YcoeffsB[1]
@ r8 := p->YcoeffsB[2]
@ r9 := p->YcoeffsB[3]
@ r11 := p->YcoeffsB[4]
add r5, r12, #YcoeffsB
ldmia r5, {r5 - r9} @ r5 := p->YcoeffsB[0]
@ r6 := p->YcoeffsB[1]
@ r7 := p->YcoeffsB[2]
@ r8 := p->YcoeffsB[3]
@ r9 := p->YcoeffsB[4]
subs r5, r10, r5 @ r5 := r10 - r5
subs r10, r11, r10 @ r10 := r11 - r10
add r1, r14, #YDELAYB-4 @ r1 := &p->buf[YDELAYB-1]
stmia r1, { r5, r10 } @ p->buf[YDELAYB-1] = r5
@ p->buf[YDELAYB] = r10
STR2OFS r10, r11, r14, #YDELAYB-4, r1 @ r1 -> scratch
@ p->buf[YDELAYB-1] = r10
@ p->buf[YDELAYB] = r11
mul r1, r10, r6 @ r1 := p->buf[YDELAYB] * p->YcoeffsB[0]
mla r1, r5, r7, r1 @ r1 += p->buf[YDELAYB-1] * p->YcoeffsB[1]
mla r1, r4, r8, r1 @ r1 += p->buf[YDELAYB-2] * p->YcoeffsB[2]
mla r1, r3, r9, r1 @ r1 += p->buf[YDELAYB-3] * p->YcoeffsB[3]
mla r1, r2, r11, r1 @ r1 += p->buf[YDELAYB-4] * p->YcoeffsB[4]
mul r1, r11, r5 @ r1 := p->buf[YDELAYB] * p->YcoeffsB[0]
mla r1, r10, r6, r1 @ r1 += p->buf[YDELAYB-1] * p->YcoeffsB[1]
mla r1, r4, r7, r1 @ r1 += p->buf[YDELAYB-2] * p->YcoeffsB[2]
mla r1, r3, r8, r1 @ r1 += p->buf[YDELAYB-3] * p->YcoeffsB[3]
mla r1, r2, r9, r1 @ r1 += p->buf[YDELAYB-4] * p->YcoeffsB[4]
@ flags were set above, in the subs instruction
mvngt r5, #0
movlt r5, #1 @ r5 := SIGN(r5) (see .c for SIGN macro)
cmp r10, #0
mvngt r10, #0
movlt r10, #1 @ r10 := SIGN(r10) (see .c for SIGN macro)
movlt r10, #1 @ r10 := SIGN(r10) (see .c for SIGN macro)
add r2, r14, #YADAPTCOEFFSB-4
stmia r2, {r5, r10} @ p->buf[YADAPTCOEFFSB-1] := r5
@ p->buf[YADAPTCOEFFSB] := r10
cmp r11, #0
mvngt r11, #0
movlt r11, #1 @ r11 := SIGN(r11) (see .c for SIGN macro)
STR2OFS r10, r11, r14, #YADAPTCOEFFSB-4, r2 @ r2 -> scratch
@ p->buf[YADAPTCOEFFSB-1] := r10
@ p->buf[YADAPTCOEFFSB] := r11
@ r0 still contains predictionA
@ r1 contains predictionB
@ -201,31 +224,31 @@ loop:
cmp r3, #0
beq 3f
add r1, r14, #YADAPTCOEFFSB-16
ldmia r1, { r2, r3, r4 } @ r2 := p->buf[YADAPTCOEFFSB-4]
add r2, r14, #YADAPTCOEFFSB-16
ldmia r2, {r2 - r4} @ r2 := p->buf[YADAPTCOEFFSB-4]
@ r3 := p->buf[YADAPTCOEFFSB-3]
@ r4 := p->buf[YADAPTCOEFFSB-2]
blt 1f
@ *decoded0 > 0
sub r6, r6, r10 @ r6 := p->YcoeffsB[0] - p->buf[YADAPTCOEFFSB]
sub r7, r7, r5 @ r7 := p->YcoeffsB[1] - p->buf[YADAPTCOEFFSB-1]
sub r11, r11, r2 @ r11 := p->YcoeffsB[4] - p->buf[YADAPTCOEFFSB-4]
sub r9, r9, r3 @ r9 := p->YcoeffsB[3] - p->buf[YADAPTCOEFFSB-3]
sub r8, r8, r4 @ r8 := p->YcoeffsB[2] - p->buf[YADAPTCOEFFSB-2]
sub r5, r5, r11 @ r5 := p->YcoeffsB[0] - p->buf[YADAPTCOEFFSB]
sub r6, r6, r10 @ r6 := p->YcoeffsB[1] - p->buf[YADAPTCOEFFSB-1]
sub r9, r9, r2 @ r9 := p->YcoeffsB[4] - p->buf[YADAPTCOEFFSB-4]
sub r8, r8, r3 @ r8 := p->YcoeffsB[3] - p->buf[YADAPTCOEFFSB-3]
sub r7, r7, r4 @ r7 := p->YcoeffsB[2] - p->buf[YADAPTCOEFFSB-2]
add r0, r12, #YcoeffsB
stmia r0, {r6,r7,r8,r9,r11} @ Save p->YcoeffsB[]
stmia r0, {r5 - r9} @ Save p->YcoeffsB[]
add r1, r12, #YcoeffsA
ldmia r1, { r2-r5 } @ r2 := p->YcoeffsA[0]
ldmia r1, {r2 - r5} @ r2 := p->YcoeffsA[0]
@ r3 := p->YcoeffsA[1]
@ r4 := p->YcoeffsA[2]
@ r5 := p->YcoeffsA[3]
add r0, r14, #YADAPTCOEFFSA-12
ldmia r0, { r6-r9} @ r6 := p->buf[YADAPTCOEFFSA-3]
add r6, r14, #YADAPTCOEFFSA-12
ldmia r6, {r6 - r9} @ r6 := p->buf[YADAPTCOEFFSA-3]
@ r7 := p->buf[YADAPTCOEFFSA-2]
@ r8 := p->buf[YADAPTCOEFFSA-1]
@ r9 := p->buf[YADAPTCOEFFSA]
@ -240,23 +263,23 @@ loop:
1: @ *decoded0 < 0
add r6, r6, r10 @ r6 := p->YcoeffsB[0] + p->buf[YADAPTCOEFFSB]
add r7, r7, r5 @ r7 := p->YcoeffsB[1] + p->buf[YADAPTCOEFFSB-1]
add r11, r11, r2 @ r11 := p->YcoeffsB[4] + p->buf[YADAPTCOEFFSB-4]
add r9, r9, r3 @ r9 := p->YcoeffsB[3] + p->buf[YADAPTCOEFFSB-3]
add r8, r8, r4 @ r8 := p->YcoeffsB[2] + p->buf[YADAPTCOEFFSB-2]
add r5, r5, r11 @ r5 := p->YcoeffsB[0] + p->buf[YADAPTCOEFFSB]
add r6, r6, r10 @ r6 := p->YcoeffsB[1] + p->buf[YADAPTCOEFFSB-1]
add r9, r9, r2 @ r9 := p->YcoeffsB[4] + p->buf[YADAPTCOEFFSB-4]
add r8, r8, r3 @ r9 := p->YcoeffsB[3] + p->buf[YADAPTCOEFFSB-3]
add r7, r7, r4 @ r8 := p->YcoeffsB[2] + p->buf[YADAPTCOEFFSB-2]
add r0, r12, #YcoeffsB
stmia r0, {r6,r7,r8,r9,r11} @ Save p->YcoeffsB[]
stmia r0, {r5 - r9} @ Save p->YcoeffsB[]
add r1, r12, #YcoeffsA
ldmia r1, { r2-r5 } @ r2 := p->YcoeffsA[0]
ldmia r1, {r2 - r5} @ r2 := p->YcoeffsA[0]
@ r3 := p->YcoeffsA[1]
@ r4 := p->YcoeffsA[2]
@ r5 := p->YcoeffsA[3]
add r0, r14, #YADAPTCOEFFSA-12
ldmia r0, { r6-r9} @ r6 := p->buf[YADAPTCOEFFSA-3]
add r6, r14, #YADAPTCOEFFSA-12
ldmia r6, {r6 - r9} @ r6 := p->buf[YADAPTCOEFFSA-3]
@ r7 := p->buf[YADAPTCOEFFSA-2]
@ r8 := p->buf[YADAPTCOEFFSA-1]
@ r9 := p->buf[YADAPTCOEFFSA]
@ -267,7 +290,7 @@ loop:
add r2, r2, r9 @ r2 := p->YcoeffsA[0] + p->buf[YADAPTCOEFFSA]
2:
stmia r1, {r2-r5} @ Save p->YcoeffsA
stmia r1, {r2 - r5} @ Save p->YcoeffsA
3:
@ -275,91 +298,90 @@ loop:
@ Predictor X, Filter A
ldr r10, [r12, #XlastA] @ r10 := p->XlastA
ldr r11, [r12, #XlastA] @ r11 := p->XlastA
add r11, r14, #XDELAYA-12 @ r11 := &p->buf[XDELAYA-3]
ldmia r11, { r2 - r4 } @ r2 := p->buf[XDELAYA-3]
add r2, r14, #XDELAYA-12 @ r2 := &p->buf[XDELAYA-3]
ldmia r2, {r2, r3, r10} @ r2 := p->buf[XDELAYA-3]
@ r3 := p->buf[XDELAYA-2]
@ r4 := p->buf[XDELAYA-1]
@ r10 := p->buf[XDELAYA-1]
add r11, r12, #XcoeffsA
ldmia r11, {r6 - r9} @ r6 := p->XcoeffsA[0]
add r6, r12, #XcoeffsA
ldmia r6, {r6 - r9} @ r6 := p->XcoeffsA[0]
@ r7 := p->XcoeffsA[1]
@ r8 := p->XcoeffsA[2]
@ r9 := p->XcoeffsA[3]
subs r4, r10, r4 @ r4 := r10 - r4
subs r10, r11, r10 @ r10 := r11 - r10
add r11, r14, #XDELAYA-4 @ r11 := &p->buf[XDELAYA-1]
stmia r11, { r4, r10 } @ p->buf[XDELAYA-1] = r4
@ p->buf[XDELAYA] = r10
STR2OFS r10, r11, r14, #XDELAYA-4, r1 @ r1 -> scratch
@ p->buf[XDELAYA-1] = r10
@ p->buf[XDELAYA] = r11
mul r0, r10, r6 @ r0 := p->buf[XDELAYA] * p->XcoeffsA[0]
mla r0, r4, r7, r0 @ r0 += p->buf[XDELAYA-1] * p->XcoeffsA[1]
mul r0, r11, r6 @ r0 := p->buf[XDELAYA] * p->XcoeffsA[0]
mla r0, r10, r7, r0 @ r0 += p->buf[XDELAYA-1] * p->XcoeffsA[1]
mla r0, r3, r8, r0 @ r0 += p->buf[XDELAYA-2] * p->XcoeffsA[2]
mla r0, r2, r9, r0 @ r0 += p->buf[XDELAYA-3] * p->XcoeffsA[3]
@ flags were set above, in the subs instruction
mvngt r4, #0
movlt r4, #1 @ r4 := SIGN(r4) (see .c for SIGN macro)
cmp r10, #0
mvngt r10, #0
movlt r10, #1 @ r10 := SIGN(r10) (see .c for SIGN macro)
movlt r10, #1 @ r10 := SIGN(r10) (see .c for SIGN macro)
add r1, r14, #XADAPTCOEFFSA-4
stmia r1, {r4, r10} @ p->buf[XADAPTCOEFFSA-1] := r4
@ p->buf[XADAPTCOEFFSA] := r10
cmp r11, #0
mvngt r11, #0
movlt r11, #1 @ r11 := SIGN(r11) (see .c for SIGN macro)
STR2OFS r10, r11, r14, #XADAPTCOEFFSA-4, r1 @ r1 -> scratch
@ p->buf[XADAPTCOEFFSA-1] := r10
@ p->buf[XADAPTCOEFFSA] := r11
@ NOTE: r0 now contains predictionA - don't overwrite.
@ Predictor X, Filter B
add r11, r12, #XfilterB
ldmia r11, {r6, r7} @ r6 := p->XfilterB
LDR2OFS r6, r7, r12, #XfilterB @ r6 := p->XfilterB
@ r7 := p->YfilterA
add r11, r14, #XDELAYB-16 @ r11 := &p->buf[XDELAYB-4]
ldmia r11, { r2 - r5 } @ r2 := p->buf[XDELAYB-4]
add r2, r14, #XDELAYB-16 @ r2 := &p->buf[XDELAYB-4]
ldmia r2, {r2 - r4, r10} @ r2 := p->buf[XDELAYB-4]
@ r3 := p->buf[XDELAYB-3]
@ r4 := p->buf[XDELAYB-2]
@ r5 := p->buf[XDELAYB-1]
@ r10 := p->buf[XDELAYB-1]
rsb r6, r6, r6, lsl #5 @ r6 := r2 * 32 - r6 ( == r6*31)
sub r10, r7, r6, asr #5 @ r10 (p->buf[XDELAYB]) := r7 - (r6 >> 5)
sub r11, r7, r6, asr #5 @ r11 (p->buf[XDELAYB]) := r7 - (r6 >> 5)
str r7, [r12, #XfilterB] @ p->XfilterB := r11 (p->YfilterA)
str r7, [r12, #XfilterB] @ p->XfilterB := r7 (p->YfilterA)
add r1, r12, #XcoeffsB
ldmia r1, {r6,r7,r8,r9,r11} @ r6 := p->XcoeffsB[0]
@ r7 := p->XcoeffsB[1]
@ r8 := p->XcoeffsB[2]
@ r9 := p->XcoeffsB[3]
@ r11 := p->XcoeffsB[4]
add r5, r12, #XcoeffsB
ldmia r5, {r5 - r9} @ r5 := p->XcoeffsB[0]
@ r6 := p->XcoeffsB[1]
@ r7 := p->XcoeffsB[2]
@ r8 := p->XcoeffsB[3]
@ r9 := p->XcoeffsB[4]
subs r5, r10, r5 @ r5 := r10 - r5
subs r10, r11, r10 @ r10 := r11 - r10
add r1, r14, #XDELAYB-4 @ r1 := &p->buf[XDELAYB-1]
stmia r1, { r5, r10 } @ p->buf[XDELAYB-1] = r5
@ p->buf[XDELAYB] = r10
STR2OFS r10, r11, r14, #XDELAYB-4, r1 @ r1 -> scratch
@ p->buf[XDELAYB-1] = r10
@ p->buf[XDELAYB] = r11
mul r1, r10, r6 @ r1 := p->buf[XDELAYB] * p->XcoeffsB[0]
mla r1, r5, r7, r1 @ r1 += p->buf[XDELAYB-1] * p->XcoeffsB[1]
mla r1, r4, r8, r1 @ r1 += p->buf[XDELAYB-2] * p->XcoeffsB[2]
mla r1, r3, r9, r1 @ r1 += p->buf[XDELAYB-3] * p->XcoeffsB[3]
mla r1, r2, r11, r1 @ r1 += p->buf[XDELAYB-4] * p->XcoeffsB[4]
mul r1, r11, r5 @ r1 := p->buf[XDELAYB] * p->XcoeffsB[0]
mla r1, r10, r6, r1 @ r1 += p->buf[XDELAYB-1] * p->XcoeffsB[1]
mla r1, r4, r7, r1 @ r1 += p->buf[XDELAYB-2] * p->XcoeffsB[2]
mla r1, r3, r8, r1 @ r1 += p->buf[XDELAYB-3] * p->XcoeffsB[3]
mla r1, r2, r9, r1 @ r1 += p->buf[XDELAYB-4] * p->XcoeffsB[4]
@ flags were set above, in the subs instruction
mvngt r5, #0
movlt r5, #1 @ r5 := SIGN(r5) (see .c for SIGN macro)
cmp r10, #0
mvngt r10, #0
movlt r10, #1 @ r10 := SIGN(r10) (see .c for SIGN macro)
movlt r10, #1 @ r10 := SIGN(r10) (see .c for SIGN macro)
add r2, r14, #XADAPTCOEFFSB-4
stmia r2, {r5, r10} @ p->buf[XADAPTCOEFFSB-1] := r5
@ p->buf[XADAPTCOEFFSB] := r10
cmp r11, #0
mvngt r11, #0
movlt r11, #1 @ r11 := SIGN(r11) (see .c for SIGN macro)
STR2OFS r10, r11, r14, #XADAPTCOEFFSB-4, r2 @ r2 -> scratch
@ p->buf[XADAPTCOEFFSB-1] := r10
@ p->buf[XADAPTCOEFFSB] := r11
@ r0 still contains predictionA
@ r1 contains predictionB
@ -388,31 +410,31 @@ loop:
cmp r3, #0
beq 3f
add r1, r14, #XADAPTCOEFFSB-16
ldmia r1, { r2, r3, r4 } @ r2 := p->buf[XADAPTCOEFFSB-4]
add r2, r14, #XADAPTCOEFFSB-16
ldmia r2, {r2 - r4} @ r2 := p->buf[XADAPTCOEFFSB-4]
@ r3 := p->buf[XADAPTCOEFFSB-3]
@ r4 := p->buf[XADAPTCOEFFSB-2]
blt 1f
@ *decoded1 > 0
sub r6, r6, r10 @ r6 := p->XcoeffsB[0] - p->buf[XADAPTCOEFFSB]
sub r7, r7, r5 @ r7 := p->XcoeffsB[1] - p->buf[XADAPTCOEFFSB-1]
sub r11, r11, r2 @ r11 := p->XcoeffsB[4] - p->buf[XADAPTCOEFFSB-4]
sub r9, r9, r3 @ r9 := p->XcoeffsB[3] - p->buf[XADAPTCOEFFSB-3]
sub r8, r8, r4 @ r8 := p->XcoeffsB[2] - p->buf[XADAPTCOEFFSB-2]
sub r5, r5, r11 @ r5 := p->XcoeffsB[0] - p->buf[XADAPTCOEFFSB]
sub r6, r6, r10 @ r6 := p->XcoeffsB[1] - p->buf[XADAPTCOEFFSB-1]
sub r9, r9, r2 @ r9 := p->XcoeffsB[4] - p->buf[XADAPTCOEFFSB-4]
sub r8, r8, r3 @ r8 := p->XcoeffsB[3] - p->buf[XADAPTCOEFFSB-3]
sub r7, r7, r4 @ r7 := p->XcoeffsB[2] - p->buf[XADAPTCOEFFSB-2]
add r0, r12, #XcoeffsB
stmia r0, {r6,r7,r8,r9,r11} @ Save p->XcoeffsB[]
stmia r0, {r5 - r9} @ Save p->XcoeffsB[]
add r1, r12, #XcoeffsA
ldmia r1, { r2-r5 } @ r2 := p->XcoeffsA[0]
ldmia r1, {r2 - r5} @ r2 := p->XcoeffsA[0]
@ r3 := p->XcoeffsA[1]
@ r4 := p->XcoeffsA[2]
@ r5 := p->XcoeffsA[3]
add r0, r14, #XADAPTCOEFFSA-12
ldmia r0, { r6-r9} @ r6 := p->buf[XADAPTCOEFFSA-3]
add r6, r14, #XADAPTCOEFFSA-12
ldmia r6, {r6 - r9} @ r6 := p->buf[XADAPTCOEFFSA-3]
@ r7 := p->buf[XADAPTCOEFFSA-2]
@ r8 := p->buf[XADAPTCOEFFSA-1]
@ r9 := p->buf[XADAPTCOEFFSA]
@ -427,23 +449,23 @@ loop:
1: @ *decoded1 < 0
add r6, r6, r10 @ r6 := p->XcoeffsB[0] + p->buf[XADAPTCOEFFSB]
add r7, r7, r5 @ r7 := p->XcoeffsB[1] + p->buf[XADAPTCOEFFSB-1]
add r11, r11, r2 @ r11 := p->XcoeffsB[4] + p->buf[XADAPTCOEFFSB-4]
add r9, r9, r3 @ r9 := p->XcoeffsB[3] + p->buf[XADAPTCOEFFSB-3]
add r8, r8, r4 @ r8 := p->XcoeffsB[2] + p->buf[XADAPTCOEFFSB-2]
add r5, r5, r11 @ r5 := p->XcoeffsB[0] + p->buf[XADAPTCOEFFSB]
add r6, r6, r10 @ r6 := p->XcoeffsB[1] + p->buf[XADAPTCOEFFSB-1]
add r9, r9, r2 @ r9 := p->XcoeffsB[4] + p->buf[XADAPTCOEFFSB-4]
add r8, r8, r3 @ r8 := p->XcoeffsB[3] + p->buf[XADAPTCOEFFSB-3]
add r7, r7, r4 @ r7 := p->XcoeffsB[2] + p->buf[XADAPTCOEFFSB-2]
add r0, r12, #XcoeffsB
stmia r0, {r6,r7,r8,r9,r11} @ Save p->XcoeffsB[]
stmia r0, {r5 - r9} @ Save p->XcoeffsB[]
add r1, r12, #XcoeffsA
ldmia r1, { r2-r5 } @ r2 := p->XcoeffsA[0]
ldmia r1, {r2 - r5} @ r2 := p->XcoeffsA[0]
@ r3 := p->XcoeffsA[1]
@ r4 := p->XcoeffsA[2]
@ r5 := p->XcoeffsA[3]
add r0, r14, #XADAPTCOEFFSA-12
ldmia r0, { r6-r9} @ r6 := p->buf[XADAPTCOEFFSA-3]
add r6, r14, #XADAPTCOEFFSA-12
ldmia r6, {r6 - r9} @ r6 := p->buf[XADAPTCOEFFSA-3]
@ r7 := p->buf[XADAPTCOEFFSA-2]
@ r8 := p->buf[XADAPTCOEFFSA-1]
@ r9 := p->buf[XADAPTCOEFFSA]
@ -454,7 +476,7 @@ loop:
add r2, r2, r9 @ r2 := p->XcoeffsA[0] + p->buf[XADAPTCOEFFSA]
2:
stmia r1, {r2-r5} @ Save p->XcoeffsA
stmia r1, {r2 - r5} @ Save p->XcoeffsA
3:
@ -479,7 +501,7 @@ loop:
done:
str r14, [r12] @ Save value of p->buf
add sp, sp, #12 @ Don't bother restoring r1-r3
ldmia sp!, {r4-r11, pc}
ldmia sp!, {r4 - r11, pc}
move_hist:
@ dest = r11 (p->historybuffer)