diff options
| author | Andree Buschmann <AndreeBuschmann@t-online.de> | 2010-04-11 19:08:44 +0000 |
|---|---|---|
| committer | Andree Buschmann <AndreeBuschmann@t-online.de> | 2010-04-11 19:08:44 +0000 |
| commit | 6999e5debef57f89439da3a42d7b5b7e89d559b5 (patch) | |
| tree | afeb9ab4ec621b33805367a5b295cb4e7f965df7 /apps/dsp_arm.S | |
| parent | efb702dc9b84242da815e303590dfc16020fe0d3 (diff) | |
Use r12 to save 1 register.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25597 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/dsp_arm.S')
| -rw-r--r-- | apps/dsp_arm.S | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/apps/dsp_arm.S b/apps/dsp_arm.S index 75e28e21e9..b90e632782 100644 --- a/apps/dsp_arm.S +++ b/apps/dsp_arm.S @@ -393,30 +393,30 @@ dsp_upsample: .type dsp_apply_gain, %function dsp_apply_gain: @ input: r0 = count, r1 = data, r2 = buf[] - stmfd sp!, {r4-r8, lr} + stmfd sp!, {r4-r7, lr} ldr r3, [r1, #4] @ r3 = data->num_channels ldr r4, [r1, #32] @ r5 = data->gain .dag_outerloop: ldr r1, [r2], #4 @ r1 = buf[0] and increment index of buf[] - mov lr, r0 @ lr = r0 = count + mov r12, r0 @ r12 = r0 = count .dag_innerloop: ldmia r1, {r5, r6} @ load r5, r6 from r1 - smull r7, r8, r5, r4 @ r5 = FRACMUL_SHL(r5, r4, 8) - mov r8, r8, asl #9 - orr r5, r8, r7, lsr #23 - smull r7, r8, r6, r4 @ r6 = FRACMUL_SHL(r6, r4, 8) - mov r8, r8, asl #9 - orr r6, r8, r7, lsr #23 + smull r7, lr, r5, r4 @ r5 = FRACMUL_SHL(r5, r4, 8) + mov lr, lr, asl #9 + orr r5, lr, r7, lsr #23 + smull r7, lr, r6, r4 @ r6 = FRACMUL_SHL(r6, r4, 8) + mov lr, lr, asl #9 + orr r6, lr, r7, lsr #23 stmia r1!, {r5, r6} @ save r5, r6 to r1 and increment r1 - subs lr, lr, #2 + subs r12, r12, #2 bgt .dag_innerloop @ end of inner loop subs r3, r3, #1 bgt .dag_outerloop @ end of outer loop - ldmfd sp!, {r4-r8, pc} + ldmfd sp!, {r4-r7, pc} .dagend: .size dsp_apply_gain,.dagend-dsp_apply_gain |