diff options
| author | Marek Vasut | 2016-05-26 18:01:45 +0200 |
|---|---|---|
| committer | Tom Rini | 2016-06-02 21:21:47 -0400 |
| commit | 806f86bd826e7a0fbefd4f34c550df400905992a (patch) | |
| tree | aef12309979ac704f0a5f3389c1d50eda4a51ebd /arch | |
| parent | 0bf65c6422d51768bc30735dbd97cf66f09a0450 (diff) | |
arm: lib: Import Thumb1 functions
Import functions into lib1funcs.S which are required for Thumb1
build. These functions come from gcc 5.3.1 release.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/lib/lib1funcs.S | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/arm/lib/lib1funcs.S b/arch/arm/lib/lib1funcs.S index c343ea91e2b..408839b3cf2 100644 --- a/arch/arm/lib/lib1funcs.S +++ b/arch/arm/lib/lib1funcs.S @@ -349,3 +349,56 @@ UNWIND(.save {lr}) ldr pc, [sp], #8 UNWIND(.fnend) ENDPROC(Ldiv0) + +/* Thumb-1 specialities */ +#if defined(CONFIG_SYS_THUMB_BUILD) && !defined(CONFIG_HAS_THUMB2) +ENTRY(__gnu_thumb1_case_sqi) + push {r1} + mov r1, lr + lsrs r1, r1, #1 + lsls r1, r1, #1 + ldrsb r1, [r1, r0] + lsls r1, r1, #1 + add lr, lr, r1 + pop {r1} + bx lr +ENDPROC(__gnu_thumb1_case_sqi) + +ENTRY(__gnu_thumb1_case_uqi) + push {r1} + mov r1, lr + lsrs r1, r1, #1 + lsls r1, r1, #1 + ldrb r1, [r1, r0] + lsls r1, r1, #1 + add lr, lr, r1 + pop {r1} + bx lr +ENDPROC(__gnu_thumb1_case_uqi) + +ENTRY(__gnu_thumb1_case_shi) + push {r0, r1} + mov r1, lr + lsrs r1, r1, #1 + lsls r0, r0, #1 + lsls r1, r1, #1 + ldrsh r1, [r1, r0] + lsls r1, r1, #1 + add lr, lr, r1 + pop {r0, r1} + bx lr +ENDPROC(__gnu_thumb1_case_shi) + +ENTRY(__gnu_thumb1_case_uhi) + push {r0, r1} + mov r1, lr + lsrs r1, r1, #1 + lsls r0, r0, #1 + lsls r1, r1, #1 + ldrh r1, [r1, r0] + lsls r1, r1, #1 + add lr, lr, r1 + pop {r0, r1} + bx lr +ENDPROC(__gnu_thumb1_case_uhi) +#endif |