len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-11-09 21:22:39 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

ARM asm LCD and ATA driver functions: Don't save r12 as it is a scratch reg. Saves a bit of stack and execution time.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21795 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2009-07-11 23:43:44 +00:00
parent fa59ed6ae7
commit 47d4c4739b
12 changed files with 256 additions and 261 deletions
Download patch file Download diff file Expand all files Collapse all files

62
firmware/target/arm/as3525/lcd-as-e200v2-fuze.S
View file

@ -51,7 +51,7 @@ lcd_write_yuv420_lines:
@ r0 = yuv_src
@ r1 = width
@ r2 = stride
stmfd sp!, { r4-r12 } @ save non-scratch
stmfd sp!, { r4-r10, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -76,9 +76,9 @@ lcd_write_yuv420_lines:
add r10, r10, r8, asl #3 @
add r10, r10, r8, asl #4 @
@
add r11, r9, r9, asl #2 @ r9 = Cr*101
add r11, r11, r9, asl #5 @
add r9, r11, r9, asl #6 @
add lr, r9, r9, asl #2 @ r9 = Cr*101
add lr, lr, r9, asl #5 @
add r9, lr, r9, asl #6 @
@
add r8, r8, #2 @ r8 = bu = (Cb*128 + 128) >> 8
mov r8, r8, asr #2 @
@ -88,19 +88,19 @@ lcd_write_yuv420_lines:
mov r10, r10, asr #8 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -108,7 +108,7 @@ lcd_write_yuv420_lines:
@
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
orr r0, r0, r11, lsl #11 @ r0 = (r << 11) | b
orr r0, r0, lr, lsl #11 @ r0 = (r << 11) | b
orr r0, r0, r7, lsl #5 @ r0 = (r << 11) | (g << 5) | b
strh r0, [r3, #0x10] @ write pixel
1: @ busy @
@ -121,19 +121,19 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -141,7 +141,7 @@ lcd_write_yuv420_lines:
@
ldrb r12, [r4], #1 @ r12 = Y' = *(Y'_p++)
@
orr r0, r0, r11, lsl #11 @ r0 = (r << 11) | b
orr r0, r0, lr, lsl #11 @ r0 = (r << 11) | b
orr r0, r0, r7, lsl #5 @ r0 = (r << 11) | (g << 5) | b
strh r0, [r3, #0x10] @ write pixel
1: @ busy @
@ -154,19 +154,19 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -175,7 +175,7 @@ lcd_write_yuv420_lines:
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
@
orr r0, r0, r11, lsl #11 @ r0 = (r << 11) | b
orr r0, r0, lr, lsl #11 @ r0 = (r << 11) | b
orr r0, r0, r7, lsl #5 @ r0 = (r << 11) | (g << 5) | b
strh r0, [r3, #0x10] @ write pixel
1: @ busy @
@ -188,25 +188,25 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
15: @ no clamp @
@
orr r0, r0, r11, lsl #11 @ r0 = (r << 11) | b
orr r0, r0, lr, lsl #11 @ r0 = (r << 11) | b
orr r0, r0, r7, lsl #5 @ r0 = (r << 11) | (g << 5) | b
strh r0, [r3, #0x10] @ write pixel
1: @ busy @
@ -217,7 +217,7 @@ lcd_write_yuv420_lines:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12 } @ restore registers and return
ldmfd sp!, { r4-r10, pc } @ restore registers and return
bx lr @
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
@ -258,7 +258,7 @@ lcd_write_yuv420_lines_odither:
@ r2 = stride
@ r3 = x_screen
@ [sp] = y_screen
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -496,6 +496,6 @@ lcd_write_yuv420_lines_odither:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither

16
firmware/target/arm/as3525/sansa-clip/lcd-as-clip.S
View file

@ -39,15 +39,15 @@
* r3/r4 - current block of phases
* r5/r6 - current block of values
* r7 - lcd data accumulator
* r8 - phase signs mask
* r12 - phase signs mask
* lr - lcd bridge address
*/
lcd_grey_data:
stmfd sp!, {r4-r8, lr}
mov r8, #0x80
orr r8, r8, r8, lsl #8
orr r8, r8, r8, lsl #16
stmfd sp!, {r4-r7, lr}
mov r12, #0x80
orr r12, r12, r12, lsl #8
orr r12, r12, r12, lsl #16
ldr lr, =GPIOA_BASE
mov r3, #(1<<5)
@ -70,7 +70,7 @@ lcd_grey_data:
orrne r7, r7, #0x2000
tst r3, #0x80000000
orrne r7, r7, #0x1000
bic r3, r3, r8
bic r3, r3, r12
add r3, r3, r5
/* set bits 3..0 */
@ -82,7 +82,7 @@ lcd_grey_data:
orrne r7, r7, #0x02
tst r4, #0x80000000
orrne r7, r7, #0x01
bic r4, r4, r8
bic r4, r4, r12
add r4, r4, r6
stmia r1!, {r3-r4}
@ -102,5 +102,5 @@ lcd_grey_data:
ands r5, r5, #(1<<10) @ wait until push fifo empties
beq 1b
ldmfd sp!, {r4-r8, pc}
ldmfd sp!, {r4-r7, pc}
.size lcd_grey_data,.-lcd_grey_data

64
firmware/target/arm/ata-as-arm.S
View file

@ -56,11 +56,11 @@
* r0 - current address
* r1 - word count
* r2 - ata port
* r3..r6, lr - read buffers
* r3..r5, r12, lr - read buffers
*/
copy_read_sectors:
stmfd sp!, {r4, r5, r6, lr}
stmfd sp!, {r4, r5, lr}
ldr r2, =.ata_port
tst r0, #1 /* 16 bit aligned? */
beq .r_aligned
@ -92,16 +92,16 @@ copy_read_sectors:
ldrh r5, [r2]
orr r4, r4, r5, lsl #24
mov r5, r5, lsr #8
ldrh r6, [r2]
orr r5, r5, r6, lsl #8
ldrh r6, [r2]
orr r5, r5, r6, lsl #24
mov r6, r6, lsr #8
ldrh r12, [r2]
orr r5, r5, r12, lsl #8
ldrh r12, [r2]
orr r5, r5, r12, lsl #24
mov r12, r12, lsr #8
ldrh lr, [r2]
orr r6, r6, lr, lsl #8
orr r12, r12, lr, lsl #8
ldrh lr, [r2]
orr r6, r6, lr, lsl #24
stmia r0!, {r3, r4, r5, r6}
orr r12, r12, lr, lsl #24
stmia r0!, {r3, r4, r5, r12}
mov r3, lr, lsr #8
subs r1, r1, #8 /* 8 or more halfwords left? */
bge .r_loop_u
@ -140,7 +140,7 @@ copy_read_sectors:
strb r3, [r0], #1 /* store final byte */
ldmfd sp!, {r4, r5, r6, pc}
ldmfd sp!, {r4, r5, pc}
/* 16-bit aligned */
.r_aligned:
@ -158,12 +158,12 @@ copy_read_sectors:
ldrh r5, [r2]
orr r4, r4, r5, lsl #16
ldrh r5, [r2]
ldrh r6, [r2]
orr r5, r5, r6, lsl #16
ldrh r6, [r2]
ldrh r12, [r2]
orr r5, r5, r12, lsl #16
ldrh r12, [r2]
ldrh lr, [r2]
orr r6, r6, lr, lsl #16
stmia r0!, {r3, r4, r5, r6}
orr r12, r12, lr, lsl #16
stmia r0!, {r3, r4, r5, r12}
subs r1, r1, #8 /* 8 or more halfwords left? */
bge .r_loop_a
@ -189,7 +189,7 @@ copy_read_sectors:
ldrneh r3, [r2]
strneh r3, [r0], #2
ldmfd sp!, {r4, r5, r6, pc}
ldmfd sp!, {r4, r5, pc}
.r_end:
.size copy_read_sectors,.r_end-copy_read_sectors
@ -210,11 +210,11 @@ copy_read_sectors:
* r0 - current address
* r1 - word count
* r2 - ata port
* r3..r6, lr - read buffers
* r3..r5, r12, lr - read buffers
*/
copy_write_sectors:
stmfd sp!, {r4, r5, r6, lr}
stmfd sp!, {r4, r5, lr}
ldr r2, =.ata_port
tst r0, #1 /* 16 bit aligned? */
beq .w_aligned
@ -234,7 +234,7 @@ copy_write_sectors:
sub r1, r1, #8 /* adjust for zero-check and doing 8 halfwords/loop */
.w_loop_u:
ldmia r0!, {r4, r5, r6, lr}
ldmia r0!, {r4, r5, r12, lr}
orr r3, r3, r4, lsl #8 /* Load 4 words at once and decompose them */
strh r3, [r2] /* into 8 halfwords in a way that the words */
mov r3, r3, lsr #16 /* are shifted by 8 bits, putting the high */
@ -245,15 +245,15 @@ copy_write_sectors:
mov r4, r4, lsr #16
strh r4, [r2]
mov r5, r5, lsr #24
orr r5, r5, r6, lsl #8
orr r5, r5, r12, lsl #8
strh r5, [r2]
mov r5, r5, lsr #16
strh r5, [r2]
mov r6, r6, lsr #24
orr r6, r6, lr, lsl #8
strh r6, [r2]
mov r6, r6, lsr #16
strh r6, [r2]
mov r12, r12, lsr #24
orr r12, r12, lr, lsl #8
strh r12, [r2]
mov r12, r12, lsr #16
strh r12, [r2]
mov r3, lr, lsr #24
subs r1, r1, #8 /* 8 or more halfwords left? */
bge .w_loop_u
@ -294,7 +294,7 @@ copy_write_sectors:
orr r3, r3, r4, lsl #8
strh r3, [r2] /* write final halfword */
ldmfd sp!, {r4, r5, r6, pc}
ldmfd sp!, {r4, r5, pc}
/* 16-bit aligned */
.w_aligned:
@ -305,7 +305,7 @@ copy_write_sectors:
sub r1, r1, #8 /* adjust for zero-check and doing 8 halfwords/loop */
.w_loop_a:
ldmia r0!, {r3, r4, r5, r6}
ldmia r0!, {r3, r4, r5, r12}
strh r3, [r2] /* Load 4 words and decompose them into */
mov r3, r3, lsr #16 /* 2 halfwords each, and write those. */
strh r3, [r2]
@ -315,9 +315,9 @@ copy_write_sectors:
strh r5, [r2]
mov r5, r5, lsr #16
strh r5, [r2]
strh r6, [r2]
mov r6, r6, lsr #16
strh r6, [r2]
strh r12, [r2]
mov r12, r12, lsr #16
strh r12, [r2]
subs r1, r1, #8 /* 8 or more halfwords left? */
bge .w_loop_a
@ -343,7 +343,7 @@ copy_write_sectors:
ldrneh r3, [r0], #2
strneh r3, [r2]
ldmfd sp!, {r4, r5, r6, pc}
ldmfd sp!, {r4, r5, pc}
.w_end:
.size copy_write_sectors,.w_end-copy_write_sectors

67
firmware/target/arm/ipod/lcd-as-gray.S
View file

@ -34,8 +34,7 @@
.type lcd_write_data,%function
lcd_write_data:
str lr, [sp, #-4]!
ldr lr, =LCD1_BASE
ldr r12, =LCD1_BASE
.loop:
ldrb r2, [r0], #1
@ -45,29 +44,29 @@ lcd_write_data:
orr r2, r3, r2, lsl #8
orr r2, r2, #0x760000
1:
ldr r3, [lr]
ldr r3, [r12]
tst r3, #LCD1_BUSY_MASK
bne 1b
str r2, [lr, #0x08]
str r2, [r12, #0x08]
#else
1:
ldr r3, [lr]
ldr r3, [r12]
tst r3, #LCD1_BUSY_MASK
bne 1b
str r2, [lr, #0x10]
str r2, [r12, #0x10]
ldrb r2, [r0], #1
1:
ldr r3, [lr]
ldr r3, [r12]
tst r3, #LCD1_BUSY_MASK
bne 1b
str r2, [lr, #0x10]
str r2, [r12, #0x10]
#endif
subs r1, r1, #1
bne .loop
ldr pc, [sp], #4
bx lr
.size lcd_write_data,.-lcd_write_data
@ -77,9 +76,9 @@ lcd_write_data:
.type lcd_write_data_shifted,%function
lcd_write_data_shifted:
stmfd sp!, {r4, r5, lr}
stmfd sp!, {r4, lr}
ldr lr, =LCD1_BASE
mov r5, #0x760000
mov r12, #0x760000
ldrb r2, [r0], #1
.sloop:
@ -88,7 +87,7 @@ lcd_write_data_shifted:
ldrb r3, [r0], #1
orr r2, r3, r2, lsl #8
mov r4, r2, lsl #12
orr r4, r5, r4, lsr #16
orr r4, r12, r4, lsr #16
1:
ldr r3, [lr]
tst r3, #LCD1_BUSY_MASK
@ -98,7 +97,7 @@ lcd_write_data_shifted:
subs r1, r1, #1
bne .sloop
ldmfd sp!, {r4, r5, pc}
ldmfd sp!, {r4, pc}
.size lcd_write_data_shifted,.-lcd_write_data_shifted
#elif defined IPOD_MINI
@ -107,33 +106,33 @@ lcd_write_data_shifted:
.type lcd_write_data_shifted,%function
lcd_write_data_shifted:
stmfd sp!, {r4, lr}
str lr, [sp, #-4]!
ldr lr, =LCD1_BASE
ldrb r2, [r0], #1
.sloop:
ldrb r3, [r0], #1
orr r2, r3, r2, lsl #8
mov r4, r2, lsr #4
mov r12, r2, lsr #4
1:
ldr r3, [lr]
tst r3, #LCD1_BUSY_MASK
bne 1b
str r4, [lr, #0x10]
str r12, [lr, #0x10]
ldrb r3, [r0], #1
orr r2, r3, r2, lsl #8
mov r4, r2, lsr #4
mov r12, r2, lsr #4
1:
ldr r3, [lr]
tst r3, #LCD1_BUSY_MASK
bne 1b
str r4, [lr, #0x10]
str r12, [lr, #0x10]
subs r1, r1, #1
bne .sloop
ldmfd sp!, {r4, pc}
ldr pc, [sp], #4
.size lcd_write_data_shifted,.-lcd_write_data_shifted
#endif
@ -142,18 +141,18 @@ lcd_write_data_shifted:
.type lcd_mono_data,%function
lcd_mono_data:
stmfd sp!, {r4, r5, lr}
stmfd sp!, {r4, lr}
ldr lr, =LCD1_BASE
adr r5, .dibits
adr r12, .dibits
.mloop:
ldrb r2, [r0], #1
mov r3, r2, lsr #4
ldrb r4, [r5, r3]
ldrb r4, [r12, r3]
#ifdef IPOD_MINI2G
and r3, r2, #0x0f
ldrb r3, [r5, r3]
ldrb r3, [r12, r3]
orr r4, r3, r4, lsl #8
orr r4, r4, #0x760000
1:
@ -169,7 +168,7 @@ lcd_mono_data:
str r4, [lr, #0x10]
and r3, r2, #0x0f
ldrb r4, [r5, r3]
ldrb r4, [r12, r3]
1:
ldr r3, [lr]
tst r3, #LCD1_BUSY_MASK
@ -180,7 +179,7 @@ lcd_mono_data:
subs r1, r1, #1
bne .mloop
ldmfd sp!, {r4, r5, pc}
ldmfd sp!, {r4, pc}
.dibits:
.byte 0x00, 0x03, 0x0C, 0x0F, 0x30, 0x33, 0x3C, 0x3F
@ -204,15 +203,15 @@ lcd_mono_data:
* r3/r4 - current block of phases
* r5/r6 - current block of values
* r7 - lcd data accumulator
* r8 - phase signs mask
* r12 - phase signs mask
* lr - lcd bridge address
*/
lcd_grey_data:
stmfd sp!, {r4-r8, lr}
mov r8, #0x80
orr r8, r8, r8, lsl #8
orr r8, r8, r8, lsl #16
stmfd sp!, {r4-r7, lr}
mov r12, #0x80
orr r12, r12, r12, lsl #8
orr r12, r12, r12, lsl #16
ldr lr, =LCD1_BASE
.greyloop:
@ -229,7 +228,7 @@ lcd_grey_data:
orreq r7, r7, #0x0c00
tst r3, #0x80000000
orreq r7, r7, #0x0300
bic r3, r3, r8
bic r3, r3, r12
add r3, r3, r5
#else /* Parallel bridge mode */
mov r7, #0
@ -241,7 +240,7 @@ lcd_grey_data:
orreq r7, r7, #0x0c
tst r3, #0x80000000
orreq r7, r7, #0x03
bic r3, r3, r8
bic r3, r3, r12
add r3, r3, r5
1:
@ -261,7 +260,7 @@ lcd_grey_data:
orreq r7, r7, #0x0c
tst r4, #0x80000000
orreq r7, r7, #0x03
bic r4, r4, r8
bic r4, r4, r12
add r4, r4, r6
stmia r1!, {r3-r4}
@ -279,6 +278,6 @@ lcd_grey_data:
subs r2, r2, #1
bne .greyloop
ldmfd sp!, {r4-r8, pc}
ldmfd sp!, {r4-r7, pc}
.size lcd_grey_data,.-lcd_grey_data

26
firmware/target/arm/ipod/video/lcd-as-video.S
View file

@ -32,22 +32,22 @@
.type lcd_write_data, %function
/* r0 = addr, must be aligned */
lcd_write_data: /* r1 = pixel count, must be even */
stmfd sp!, {r4-r5, lr}
stmfd sp!, {r4, lr}
mov lr, #0x30000000 /* LCD data port */
subs r1, r1, #16
.loop16:
ldmgeia r0!, {r2-r5}
stmgeia lr, {r2-r5}
ldmgeia r0!, {r2-r5}
stmgeia lr, {r2-r5}
ldmgeia r0!, {r2-r4, r12}
stmgeia lr, {r2-r4, r12}
ldmgeia r0!, {r2-r4, r12}
stmgeia lr, {r2-r4, r12}
subges r1, r1, #16
bge .loop16
/* no need to correct the count, we're just checking bits from now */
tst r1, #8
ldmneia r0!, {r2-r5}
stmneia lr, {r2-r5}
ldmneia r0!, {r2-r4, r12}
stmneia lr, {r2-r4, r12}
tst r1, #4
ldmneia r0!, {r2-r3}
stmneia lr, {r2-r3}
@ -55,7 +55,7 @@ lcd_write_data: /* r1 = pixel count, must be even */
ldrne r3, [r0], #4
strne r3, [lr]
ldmfd sp!, {r4-r5, pc}
ldmfd sp!, {r4, pc}
/****************************************************************************
* extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
@ -87,10 +87,10 @@ lcd_write_yuv420_lines:
/* r1 = dst = bcmaddr */
/* r2 = width */
/* r3 = stride */
stmfd sp!, { r4-r11, lr } /* save non-scratch */
ldmia r0, { r9-r11 } /* r9 = yuv_src[0] = Y'_p */
stmfd sp!, { r4-r10, lr } /* save non-scratch */
ldmia r0, { r9, r10, r12 } /* r9 = yuv_src[0] = Y'_p */
/* r10 = yuv_src[1] = Cb_p */
/* r11 = yuv_src[2] = Cr_p */
/* r12 = yuv_src[2] = Cr_p */
add r3, r9, r3 /* r3 = &ysrc[stride] */
add r4, r2, r2, asr #1 /* chroma buffer lenght = width/2 *3 */
mov r4, r4, asl #2 /* use words for str/ldm possibility */
@ -116,7 +116,7 @@ lcd_write_yuv420_lines:
10: /* loop start */
ldrb r0, [r10], #1 /* r0 = *usrc++ = *Cb_p++ */
ldrb r1, [r11], #1 /* r1 = *vsrc++ = *Cr_p++ */
ldrb r1, [r12], #1 /* r1 = *vsrc++ = *Cr_p++ */
sub r0, r0, #128 /* r0 = Cb-128 */
sub r1, r1, #128 /* r1 = Cr-128 */
@ -289,7 +289,7 @@ lcd_write_yuv420_lines:
ldr r3, [sp, #12]
add sp, sp, r3 /* deallocate buffer */
ldmfd sp!, { r4-r11, pc } /* restore registers */
ldmfd sp!, { r4-r10, pc } /* restore registers */
.ltorg
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines

8
firmware/target/arm/iriver/h10/lcd-as-h10.S
View file

@ -49,7 +49,7 @@ lcd_write_yuv420_lines:
@ r0 = yuv_src
@ r1 = width
@ r2 = stride
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -232,7 +232,7 @@ lcd_write_yuv420_lines:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
@ -273,7 +273,7 @@ lcd_write_yuv420_lines_odither:
@ r2 = stride
@ r3 = x_screen
@ [sp] = y_screen
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -533,6 +533,6 @@ lcd_write_yuv420_lines_odither:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither

67
firmware/target/arm/lcd-as-memframe.S
View file

@ -37,7 +37,7 @@
@ r2 = width
@ r3 = height
lcd_copy_buffer_rect: @
stmfd sp!, { r4-r12, lr } @ save non-scratch regs
stmfd sp!, { r4-r11, lr } @ save non-scratch regs
mov r5, r2 @ r5 = cached width
rsb r4, r2, #LCD_WIDTH @ r4 = LCD_WIDTH - width
10: @ copy line @
@ -101,7 +101,7 @@ lcd_copy_buffer_rect: @
add r0, r0, r4, lsl #1 @
subs r3, r3, #1 @ next line
bgt 10b @ copy line @
ldmfd sp!, { r4-r12, pc } @ restore regs and return
ldmfd sp!, { r4-r11, pc } @ restore regs and return
.ltorg @ dump constant pool
.size lcd_copy_buffer_rect, .-lcd_copy_buffer_rect
@ -132,7 +132,7 @@ lcd_write_yuv420_lines:
@ r1 = yuv_src
@ r2 = width
@ r3 = stride
stmfd sp!, { r4-r12 } @ save non-scratch
stmfd sp!, { r4-r10, lr } @ save non-scratch
ldmia r1, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -155,9 +155,9 @@ lcd_write_yuv420_lines:
add r10, r10, r8, asl #3 @
add r10, r10, r8, asl #4 @
@
add r11, r9, r9, asl #2 @ r9 = Cr*101
add r11, r11, r9, asl #5 @
add r9, r11, r9, asl #6 @
add lr, r9, r9, asl #2 @ r9 = Cr*101
add lr, lr, r9, asl #5 @
add r9, lr, r9, asl #6 @
@
add r8, r8, #2 @ r8 = bu = (Cb*128 + 128) >> 8
mov r8, r8, asr #2 @
@ -167,19 +167,19 @@ lcd_write_yuv420_lines:
mov r10, r10, asr #8 @
@ compute R, G, and B
add r1, r8, r7, asr #8 @ r1 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r1, r11 @ check if clamping is needed...
orr r12, r1, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r1, #31 @ clamp b
mvnhi r1, r1, asr #31 @
andhi r1, r1, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -188,7 +188,7 @@ lcd_write_yuv420_lines:
ldrb r12, [r4, r3] @ r12 = Y' = *(Y'_p + stride)
@
orr r1, r1, r7, lsl #5 @ r4 |= (g << 5)
orr r1, r1, r11, lsl #11 @ r4 = b | (r << 11)
orr r1, r1, lr, lsl #11 @ r4 = b | (r << 11)
#if LCD_WIDTH >= LCD_HEIGHT
strh r1, [r0] @
@ -203,19 +203,19 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r1, r8, r7, asr #8 @ r1 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r1, r11 @ check if clamping is needed...
orr r12, r1, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r1, #31 @ clamp b
mvnhi r1, r1, asr #31 @
andhi r1, r1, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -223,7 +223,7 @@ lcd_write_yuv420_lines:
@
ldrb r12, [r4], #1 @ r12 = Y' = *(Y'_p++)
@
orr r1, r1, r11, lsl #11 @ r1 = b | (r << 11)
orr r1, r1, lr, lsl #11 @ r1 = b | (r << 11)
orr r1, r1, r7, lsl #5 @ r1 |= (g << 5)
#if LCD_WIDTH >= LCD_HEIGHT
@ -242,19 +242,19 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r1, r8, r7, asr #8 @ r1 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r1, r11 @ check if clamping is needed...
orr r12, r1, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r1, #31 @ clamp b
mvnhi r1, r1, asr #31 @
andhi r1, r1, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -263,7 +263,7 @@ lcd_write_yuv420_lines:
ldrb r12, [r4, r3] @ r12 = Y' = *(Y'_p + stride)
@
orr r1, r1, r7, lsl #5 @ r1 = b | (g << 5)
orr r1, r1, r11, lsl #11 @ r1 |= (r << 11)
orr r1, r1, lr, lsl #11 @ r1 |= (r << 11)
#if LCD_WIDTH >= LCD_HEIGHT
strh r1, [r0, #2]
@ -278,25 +278,25 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r1, r8, r7, asr #8 @ r1 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r1, r11 @ check if clamping is needed...
orr r12, r1, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r1, #31 @ clamp b
mvnhi r1, r1, asr #31 @
andhi r1, r1, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
15: @ no clamp @
@
orr r12, r1, r11, lsl #11 @ r12 = b | (r << 11)
orr r12, r1, lr, lsl #11 @ r12 = b | (r << 11)
orr r12, r12, r7, lsl #5 @ r12 |= (g << 5)
#if LCD_WIDTH >= LCD_HEIGHT
@ -320,8 +320,7 @@ lcd_write_yuv420_lines:
subs r2, r2, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12 } @ restore registers and return
bx lr @
ldmfd sp!, { r4-r10, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
@ -364,7 +363,7 @@ lcd_write_yuv420_lines_odither:
@ r3 = stride
@ [sp] = x_screen
@ [sp+4] = y_screen
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r1, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -626,6 +625,6 @@ lcd_write_yuv420_lines_odither:
subs r2, r2, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither

25
firmware/target/arm/olympus/mrobe-100/lcd-as-mr100.S
View file

@ -30,21 +30,20 @@
.type lcd_write_data,%function
lcd_write_data:
str lr, [sp, #-4]!
ldr lr, =LCD1_BASE
ldr r12, =LCD1_BASE
.loop:
ldrb r2, [r0], #1
1:
ldr r3, [lr]
ldr r3, [r12]
tst r3, #LCD1_BUSY_MASK
bne 1b
str r2, [lr, #0x10]
str r2, [r12, #0x10]
subs r1, r1, #1
bne .loop
ldr pc, [sp], #4
bx lr
.size lcd_write_data,.-lcd_write_data
@ -63,15 +62,15 @@ lcd_write_data:
* r3/r4 - current block of phases
* r5/r6 - current block of values
* r7 - lcd data accumulator
* r8 - phase signs mask
* r12 - phase signs mask
* lr - lcd bridge address
*/
lcd_grey_data:
stmfd sp!, {r4-r8, lr}
mov r8, #0x80
orr r8, r8, r8, lsl #8
orr r8, r8, r8, lsl #16
stmfd sp!, {r4-r7, lr}
mov r12, #0x80
orr r12, r12, r12, lsl #8
orr r12, r12, r12, lsl #16
ldr lr, =LCD1_BASE
.greyloop:
@ -87,7 +86,7 @@ lcd_grey_data:
biceq r7, r7, #0x20
tst r3, #0x80000000
biceq r7, r7, #0x10
bic r3, r3, r8
bic r3, r3, r12
add r3, r3, r5
tst r4, #0x80
@ -98,7 +97,7 @@ lcd_grey_data:
biceq r7, r7, #0x02
tst r4, #0x80000000
biceq r7, r7, #0x01
bic r4, r4, r8
bic r4, r4, r12
add r4, r4, r6
stmia r1!, {r3-r4}
@ -112,6 +111,6 @@ lcd_grey_data:
subs r2, r2, #1
bne .greyloop
ldmfd sp!, {r4-r8, pc}
ldmfd sp!, {r4-r7, pc}
.size lcd_grey_data,.-lcd_grey_data

8
firmware/target/arm/philips/hdd1630/lcd-as-hdd1630.S
View file

@ -49,7 +49,7 @@ lcd_write_yuv420_lines:
@ r0 = yuv_src
@ r1 = width
@ r2 = stride
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -248,7 +248,7 @@ lcd_write_yuv420_lines:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
@ -289,7 +289,7 @@ lcd_write_yuv420_lines_odither:
@ r2 = stride
@ r3 = x_screen
@ [sp] = y_screen
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -565,6 +565,6 @@ lcd_write_yuv420_lines_odither:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither

79
firmware/target/arm/samsung/yh820/lcd-as-yh820.S
View file

@ -48,7 +48,7 @@ lcd_write_yuv420_lines:
@ r0 = yuv_src
@ r1 = width
@ r2 = stride
stmfd sp!, { r4-r12 } @ save non-scratch
stmfd sp!, { r4-r10, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -73,9 +73,9 @@ lcd_write_yuv420_lines:
add r10, r10, r8, asl #3 @
add r10, r10, r8, asl #4 @
@
add r11, r9, r9, asl #2 @ r9 = Cr*101
add r11, r11, r9, asl #5 @
add r9, r11, r9, asl #6 @
add lr, r9, r9, asl #2 @ r9 = Cr*101
add lr, lr, r9, asl #5 @
add r9, lr, r9, asl #6 @
@
add r8, r8, #2 @ r8 = bu = (Cb*128 + 128) >> 8
mov r8, r8, asr #2 @
@ -85,19 +85,19 @@ lcd_write_yuv420_lines:
mov r10, r10, asr #8 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -105,14 +105,14 @@ lcd_write_yuv420_lines:
@
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
mov r11, r11, lsl #3 @
orr r11, r11, r7, lsr #3 @ r11 = (r << 3) | (g >> 3)
mov lr, lr, lsl #3 @
orr lr, lr, r7, lsr #3 @ lr = (r << 3) | (g >> 3)
orr r0, r0, r7, lsl #5 @ r0 = (g << 5) | b
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
bne 1b @
str r11, [r3, #0x10] @ send MSB
str lr, [r3, #0x10] @ send MSB
1: @busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
@ -124,19 +124,19 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -144,14 +144,14 @@ lcd_write_yuv420_lines:
@
ldrb r12, [r4], #1 @ r12 = Y' = *(Y'_p++)
@
mov r11, r11, lsl #3 @
orr r11, r11, r7, lsr #3 @ r11 = (r << 3) | (g >> 3)
mov lr, lr, lsl #3 @
orr lr, lr, r7, lsr #3 @ lr = (r << 3) | (g >> 3)
orr r0, r0, r7, lsl #5 @ r0 = (g << 5) | b
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
bne 1b @
str r11, [r3, #0x10] @ send MSB
str lr, [r3, #0x10] @ send MSB
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
@ -163,19 +163,19 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -184,14 +184,14 @@ lcd_write_yuv420_lines:
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
@
mov r11, r11, lsl #3 @
orr r11, r11, r7, lsr #3 @ r11 = (r << 3) | (g >> 3)
mov lr, lr, lsl #3 @
orr lr, lr, r7, lsr #3 @ lr = (r << 3) | (g >> 3)
orr r0, r0, r7, lsl #5 @ r0 = (g << 5) | b
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
bne 1b @
str r11, [r3, #0x10] @ send MSB
str lr, [r3, #0x10] @ send MSB
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
@ -203,32 +203,32 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
15: @ no clamp @
@
mov r11, r11, lsl #3 @
orr r11, r11, r7, lsr #3 @ r11 = (r << 3) | (g >> 3)
mov lr, lr, lsl #3 @
orr lr, lr, r7, lsr #3 @ lr = (r << 3) | (g >> 3)
orr r0, r0, r7, lsl #5 @ r0 = (g << 5) | b
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
bne 1b @
str r11, [r3, #0x10] @ send MSB
str lr, [r3, #0x10] @ send MSB
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
@ -238,8 +238,7 @@ lcd_write_yuv420_lines:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12 } @ restore registers and return
bx lr @
ldmfd sp!, { r4-r10, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
@ -279,7 +278,7 @@ lcd_write_yuv420_lines_odither:
@ r2 = stride
@ r3 = x_screen
@ [sp] = y_screen
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -546,6 +545,6 @@ lcd_write_yuv420_lines_odither:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither

8
firmware/target/arm/samsung/yh925/lcd-as-yh925.S
View file

@ -49,7 +49,7 @@ lcd_write_yuv420_lines:
@ r0 = yuv_src
@ r1 = width
@ r2 = stride
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -232,7 +232,7 @@ lcd_write_yuv420_lines:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
@ -273,7 +273,7 @@ lcd_write_yuv420_lines_odither:
@ r2 = stride
@ r3 = x_screen
@ [sp] = y_screen
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -533,6 +533,6 @@ lcd_write_yuv420_lines_odither:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither

79
firmware/target/arm/sandisk/sansa-c200/lcd-as-c200.S
View file

@ -48,7 +48,7 @@ lcd_write_yuv420_lines:
@ r0 = yuv_src
@ r1 = width
@ r2 = stride
stmfd sp!, { r4-r12 } @ save non-scratch
stmfd sp!, { r4-r10, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -73,9 +73,9 @@ lcd_write_yuv420_lines:
add r10, r10, r8, asl #3 @
add r10, r10, r8, asl #4 @
@
add r11, r9, r9, asl #2 @ r9 = Cr*101
add r11, r11, r9, asl #5 @
add r9, r11, r9, asl #6 @
add lr, r9, r9, asl #2 @ r9 = Cr*101
add lr, lr, r9, asl #5 @
add r9, lr, r9, asl #6 @
@
add r8, r8, #2 @ r8 = bu = (Cb*128 + 128) >> 8
mov r8, r8, asr #2 @
@ -85,19 +85,19 @@ lcd_write_yuv420_lines:
mov r10, r10, asr #8 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -105,14 +105,14 @@ lcd_write_yuv420_lines:
@
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
mov r11, r11, lsl #3 @
orr r11, r11, r7, lsr #3 @ r11 = (r << 3) | (g >> 3)
mov lr, lr, lsl #3 @
orr lr, lr, r7, lsr #3 @ lr = (r << 3) | (g >> 3)
orr r0, r0, r7, lsl #5 @ r0 = (g << 5) | b
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
bne 1b @
str r11, [r3, #0x10] @ send MSB
str lr, [r3, #0x10] @ send MSB
1: @busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
@ -124,19 +124,19 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -144,14 +144,14 @@ lcd_write_yuv420_lines:
@
ldrb r12, [r4], #1 @ r12 = Y' = *(Y'_p++)
@
mov r11, r11, lsl #3 @
orr r11, r11, r7, lsr #3 @ r11 = (r << 3) | (g >> 3)
mov lr, lr, lsl #3 @
orr lr, lr, r7, lsr #3 @ lr = (r << 3) | (g >> 3)
orr r0, r0, r7, lsl #5 @ r0 = (g << 5) | b
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
bne 1b @
str r11, [r3, #0x10] @ send MSB
str lr, [r3, #0x10] @ send MSB
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
@ -163,19 +163,19 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
@ -184,14 +184,14 @@ lcd_write_yuv420_lines:
ldrb r12, [r4, r2] @ r12 = Y' = *(Y'_p + stride)
@
@
mov r11, r11, lsl #3 @
orr r11, r11, r7, lsr #3 @ r11 = (r << 3) | (g >> 3)
mov lr, lr, lsl #3 @
orr lr, lr, r7, lsr #3 @ lr = (r << 3) | (g >> 3)
orr r0, r0, r7, lsl #5 @ r0 = (g << 5) | b
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
bne 1b @
str r11, [r3, #0x10] @ send MSB
str lr, [r3, #0x10] @ send MSB
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
@ -203,32 +203,32 @@ lcd_write_yuv420_lines:
add r7, r12, r7, asl #5 @
@ compute R, G, and B
add r0, r8, r7, asr #8 @ r0 = b = (Y >> 9) + bu
add r11, r9, r7, asr #8 @ r11 = r = (Y >> 9) + rv
add lr, r9, r7, asr #8 @ lr = r = (Y >> 9) + rv
add r7, r10, r7, asr #7 @ r7 = g = (Y >> 8) + guv
@
orr r12, r0, r11 @ check if clamping is needed...
orr r12, r0, lr @ check if clamping is needed...
orr r12, r12, r7, asr #1 @ ...at all
cmp r12, #31 @
bls 15f @ no clamp @
cmp r0, #31 @ clamp b
mvnhi r0, r0, asr #31 @
andhi r0, r0, #31 @
cmp r11, #31 @ clamp r
mvnhi r11, r11, asr #31 @
andhi r11, r11, #31 @
cmp lr, #31 @ clamp r
mvnhi lr, lr, asr #31 @
andhi lr, lr, #31 @
cmp r7, #63 @ clamp g
mvnhi r7, r7, asr #31 @
andhi r7, r7, #63 @
15: @ no clamp @
@
mov r11, r11, lsl #3 @
orr r11, r11, r7, lsr #3 @ r11 = (r << 3) | (g >> 3)
mov lr, lr, lsl #3 @
orr lr, lr, r7, lsr #3 @ lr = (r << 3) | (g >> 3)
orr r0, r0, r7, lsl #5 @ r0 = (g << 5) | b
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
bne 1b @
str r11, [r3, #0x10] @ send MSB
str lr, [r3, #0x10] @ send MSB
1: @ busy @
ldr r7, [r3] @ r7 = LCD1_BASE
tst r7, #LCD1_BUSY_MASK @ bridge busy?
@ -238,8 +238,7 @@ lcd_write_yuv420_lines:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12 } @ restore registers and return
bx lr @
ldmfd sp!, { r4-r10, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
@ -279,7 +278,7 @@ lcd_write_yuv420_lines_odither:
@ r2 = stride
@ r3 = x_screen
@ [sp] = y_screen
stmfd sp!, { r4-r12, lr } @ save non-scratch
stmfd sp!, { r4-r11, lr } @ save non-scratch
ldmia r0, { r4, r5, r6 } @ r4 = yuv_src[0] = Y'_p
@ r5 = yuv_src[1] = Cb_p
@ r6 = yuv_src[2] = Cr_p
@ -546,6 +545,6 @@ lcd_write_yuv420_lines_odither:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r12, pc } @ restore registers and return
ldmfd sp!, { r4-r11, pc } @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither