diff options
Diffstat (limited to 'apps/codecs/libspeex')
| -rw-r--r-- | apps/codecs/libspeex/filters_arm4.S | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/apps/codecs/libspeex/filters_arm4.S b/apps/codecs/libspeex/filters_arm4.S index dcd1691..e652ede 100644 --- a/apps/codecs/libspeex/filters_arm4.S +++ b/apps/codecs/libspeex/filters_arm4.S @@ -206,11 +206,9 @@ qmf_synth: sub r0, r8, r5 @ r0 = &xx1[N2] sub r1, r9, r5 @ r1 = &xx2[N2] - str r4, [sp, #-4] @ Stack N + str r4, [sp, #-4]! @ Stack N mov r4, r5 - str r4, [sp, #-8] @ Stack M - @ sp doesn't point to the end of the stack frame from here on, but we're not - @ calling anything so it shouldn't matter + str r4, [sp, #-4]! @ Stack M @ Main loop, register usage: @ r0 = xx1, r1 = xx2, r2 = a, r3 = y, r4 = M, r5 = x10, r6 = x11, r7 = x20 @ r8 = x21, r9 = [a1, a0], r10 = acc0, r11 = acc1, r12 = acc2, r14 = acc3 @@ -251,7 +249,7 @@ qmf_synth: subs r4, r4, #4 bne 1b - ldr r4, [sp, #-8] @ r4 = M + ldr r4, [sp] @ r4 = M sub r2, r2, r4, lsl #1 @ r2 = &a[0] sub r0, r0, r4 @ r0 = &xx1[N2 - 2 - i] sub r1, r1, r4 @ r1 = &xx2[N2 - 2 - i] @@ -281,13 +279,14 @@ qmf_synth: strh r11, [r3], #2 strh r12, [r3], #2 strh r14, [r3], #2 - ldr r10, [sp, #-4] @ Load N + ldr r10, [sp, #4] @ Load N subs r10, r10, #4 @ Are we done? - strne r10, [sp, #-4] - bne 0b + strne r10, [sp, #4] @ no -> + bne 0b @ do outer loop @ Copy start of xx1 and xx2 back to alternate mem1 and mem2 entries @ r0 and r1 are &xx1[0] and &xx2[0] at this point + add sp, sp, #8 ldmia sp, { r5-r6, sp } @ Fetch &mem1[1], &mem2[1], restore sp 0: ldr r7, [r0], #4 |