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arm: mlpdsp: handle pic offset calculation in a macro 

Makes the code easier to read since it hides different offset
calculations for arm and thumb mode.
This commit is contained in:
Janne Grunau 2014-12-08 14:10:18 +01:00
parent 581c7f0e12
commit 4c81613df4
1 changed files with 20 additions and 16 deletions
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36
libavcodec/arm/mlpdsp_armv5te.S
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@ -43,6 +43,14 @@ I .req ip
PSAMP .req lr
.macro branch_pic_label first, remainder:vararg
A .word \first - 4
T .hword (\first) / 2
.ifnb \remainder
branch_pic_label \remainder
.endif
.endm
// Some macros that do loads/multiplies where the register number is determined
// from an assembly-time expression. Boy is GNU assembler's syntax ugly...
@ -342,20 +350,16 @@ A ldr CO0, [pc, a3, lsl #2] // firorder is in range 0-(8-iir_taps)
A add pc, pc, CO0
T tbh [pc, a3, lsl #1]
0:
A .word (70f - 0b) - 4, (71f - 0b) - 4, (72f - 0b) - 4, (73f - 0b) - 4, (74f - 0b) - 4
T .hword (70f - 0b) / 2, (71f - 0b) / 2, (72f - 0b) / 2, (73f - 0b) / 2, (74f - 0b) / 2
branch_pic_label (70f - 0b), (71f - 0b), (72f - 0b), (73f - 0b)
branch_pic_label (74f - 0b)
.if \iir_taps <= 3
A .word (75f - 0b) - 4
T .hword (75f - 0b) / 2
branch_pic_label (75f - 0b)
.if \iir_taps <= 2
A .word (76f - 0b) - 4
T .hword (76f - 0b) / 2
branch_pic_label (76f - 0b)
.if \iir_taps <= 1
A .word (77f - 0b) - 4
T .hword (77f - 0b) / 2
branch_pic_label (77f - 0b)
.if \iir_taps == 0
A .word (78f - 0b) - 4
T .hword (78f - 0b) / 2
branch_pic_label (78f - 0b)
.endif
.endif
.endif
@ -384,8 +388,8 @@ A ldr CO0, [pc, a4, lsl #2] // irorder is in range 0-4
A add pc, pc, CO0
T tbh [pc, a4, lsl #1]
0:
A .word (60f - 0b) - 4, (61f - 0b) - 4, (62f - 0b) - 4, (63f - 0b) - 4, (64f - 0b) - 4
T .hword (60f - 0b) / 2, (61f - 0b) / 2, (62f - 0b) / 2, (63f - 0b) / 2, (64f - 0b) / 2
branch_pic_label (60f - 0b), (61f - 0b), (62f - 0b), (63f - 0b)
branch_pic_label (64f - 0b)
60: switch_on_fir_taps \mask_minus1, \shift_0, \shift_8, 0
61: switch_on_fir_taps \mask_minus1, \shift_0, \shift_8, 1
62: switch_on_fir_taps \mask_minus1, \shift_0, \shift_8, 2
@ -610,10 +614,10 @@ A ldr v5, [pc, v5, lsl #2]
A add pc, pc, v5
T tbh [pc, v5, lsl #1]
0:
A .word 0, 0, (12f - 0b) - 4, (13f - 0b) - 4, (14f - 0b) - 4, (15f - 0b) - 4, (16f - 0b) - 4, (17f - 0b) - 4, (18f - 0b) - 4, (19f - 0b) - 4, (20f - 0b) - 4, (21f - 0b) - 4, (22f - 0b) - 4, (23f - 0b) - 4, (24f - 0b) - 4, (25f - 0b) - 4
T .hword 0, 0, (12f - 0b) / 2, (13f - 0b) / 2, (14f - 0b) / 2, (15f - 0b) / 2
T .hword (16f - 0b) / 2, (17f - 0b) / 2, (18f - 0b) / 2, (19f - 0b) / 2
T .hword (20f - 0b) / 2, (21f - 0b) / 2, (22f - 0b) / 2, (23f - 0b) / 2, (24f - 0b) / 2, (25f - 0b) / 2
branch_pic_label 0, 0, (12f - 0b), (13f - 0b)
branch_pic_label (14f - 0b), (15f - 0b), (16f - 0b), (17f - 0b)
branch_pic_label (18f - 0b), (19f - 0b), (20f - 0b), (21f - 0b)
branch_pic_label (22f - 0b), (23f - 0b), (24f - 0b), (25f - 0b)
10: switch_on_au_size 0
11: switch_on_au_size 1
12: switch_on_au_size 2