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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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3
firmware/target/arm/as3525/sansa-clip/lcd-as-clip.S
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@ -19,6 +19,7 @@
*
****************************************************************************/
#include "config.h"
#include "as3525.h"
.text
@ -90,5 +91,5 @@ lcd_grey_data:
ands r5, r5, #(1<<10) @ wait until push fifo empties
beq 1b
ldmfd sp!, {r4-r7, pc}
ldmpc regs=r4-r7
.size lcd_grey_data,.-lcd_grey_data