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author | Rafaël Carré <rafael.carre@gmail.com> | 2010-06-11 04:41:36 +0000 |
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committer | Rafaël Carré <rafael.carre@gmail.com> | 2010-06-11 04:41:36 +0000 |
commit | 45c7498f59ad2889f2120a865a51043004eddd5d (patch) | |
tree | 1a62b0e8549a7f2750679de8d7dd3f82039c5719 /firmware/target/arm/samsung/yh925/lcd-as-yh925.S | |
parent | fe7ca44471b309a0adea563cce947de9efb62ab5 (diff) | |
download | rockbox-45c7498f59ad2889f2120a865a51043004eddd5d.tar.gz rockbox-45c7498f59ad2889f2120a865a51043004eddd5d.zip |
FS#11335 by me: make ARM assembly functions thumb-friendly
We can't pop into pc on ARMv4t when using thumb: the T bit won't be
modified if we are returning to a thumb function
Code running on ARMv4t should use the new ldrpc / ldmpc macros instead
of ldr pc, [sp], #4 and ldm(cond) sp!, {regs, pc}
No modification on pure ARM builds and ARMv5+
Note: USE_THUMB is currently never defined, no targets can currently be
built with -mthumb, see FS#6734
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26756 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm/samsung/yh925/lcd-as-yh925.S')
-rw-r--r-- | firmware/target/arm/samsung/yh925/lcd-as-yh925.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/firmware/target/arm/samsung/yh925/lcd-as-yh925.S b/firmware/target/arm/samsung/yh925/lcd-as-yh925.S index b3f12e46b6..8e851d8441 100644 --- a/firmware/target/arm/samsung/yh925/lcd-as-yh925.S +++ b/firmware/target/arm/samsung/yh925/lcd-as-yh925.S | |||
@@ -232,7 +232,7 @@ lcd_write_yuv420_lines: | |||
232 | subs r1, r1, #2 @ subtract block from width | 232 | subs r1, r1, #2 @ subtract block from width |
233 | bgt 10b @ loop line @ | 233 | bgt 10b @ loop line @ |
234 | @ | 234 | @ |
235 | ldmfd sp!, { r4-r11, pc } @ restore registers and return | 235 | ldmpc regs=r4-r11 @ restore registers and return |
236 | .ltorg @ dump constant pool | 236 | .ltorg @ dump constant pool |
237 | .size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines | 237 | .size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines |
238 | 238 | ||
@@ -533,6 +533,6 @@ lcd_write_yuv420_lines_odither: | |||
533 | subs r1, r1, #2 @ subtract block from width | 533 | subs r1, r1, #2 @ subtract block from width |
534 | bgt 10b @ loop line @ | 534 | bgt 10b @ loop line @ |
535 | @ | 535 | @ |
536 | ldmfd sp!, { r4-r11, pc } @ restore registers and return | 536 | ldmpc regs=r4-r11 @ restore registers and return |
537 | .ltorg @ dump constant pool | 537 | .ltorg @ dump constant pool |
538 | .size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither | 538 | .size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither |