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FS#11335 by me: make ARM assembly functions thumb-friendly

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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
This commit is contained in:
Rafaël Carré 2010-06-11 04:41:36 +00:00
parent fe7ca44471
commit 45c7498f59
39 changed files with 170 additions and 109 deletions
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4
firmware/target/arm/pbell/vibe500/lcd-as-vibe500.S
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@ -243,7 +243,7 @@ lcd_write_yuv420_lines:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r11, pc } @ restore registers and return
ldmpc regs=r4-r11 @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines, .-lcd_write_yuv420_lines
@ -551,6 +551,6 @@ lcd_write_yuv420_lines_odither:
subs r1, r1, #2 @ subtract block from width
bgt 10b @ loop line @
@
ldmfd sp!, { r4-r11, pc } @ restore registers and return
ldmpc regs=r4-r11 @ restore registers and return
.ltorg @ dump constant pool
.size lcd_write_yuv420_lines_odither, .-lcd_write_yuv420_lines_odither