| commit | 48088057b1070d130f16c7222b93bf2f726bd29c | |
| author | funman <funman@a1c6a512-1295-4272-9138-f99709370657> | |
| Fri, 11 Jun 2010 04:41:36 +0000 (11 04:41 +0000) | ||
| committer | funman <funman@a1c6a512-1295-4272-9138-f99709370657> | |
| Fri, 11 Jun 2010 04:41:36 +0000 (11 04:41 +0000) | ||
| tree | 1a62b0e8549a7f2750679de8d7dd3f82039c5719 | treesnapshot (tar.gz zip) |
| parent | de7c67e5bdffe1ef73dd889fe1099280630abcc1 | commitdiff |
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
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
39 files changed: