[U-Boot] [PATCH 10/12] arm: lib: Import Thumb1 functions

Marek Vasut
2016-05-26T16:01:45Z

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>
---
arch/arm/lib/lib1funcs.S | 53 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)

diff --git a/arch/arm/lib/lib1funcs.S b/arch/arm/lib/lib1funcs.S
index c343ea9..408839b 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
--
2.7.0