The assembly for __gnu_thumb1_case_si was taken from upstream gcc and adapted as width suffix was removed for the add instruction [1].
Signed-off-by: Francis Laniel francis.laniel@amarulasolutions.com Tested-by: Tony Dinh mibodhi@gmail.com [1] https://github.com/gcc-mirror/gcc/blob/4f181f9c7ee3efc509d185fdfda33be9018f1... --- arch/arm/lib/lib1funcs.S | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/arch/arm/lib/lib1funcs.S b/arch/arm/lib/lib1funcs.S index 7ff4446dd6..79cedc0aad 100644 --- a/arch/arm/lib/lib1funcs.S +++ b/arch/arm/lib/lib1funcs.S @@ -424,4 +424,21 @@ ENTRY(__gnu_thumb1_case_uhi) ret lr ENDPROC(__gnu_thumb1_case_uhi) .popsection + +/* Taken and adapted from: https://github.com/gcc-mirror/gcc/blob/4f181f9c7ee3efc509d185fdfda33be9018f1... */ +.pushsection .text.__gnu_thumb1_case_si, "ax" +ENTRY(__gnu_thumb1_case_si) + push {r0, r1} + mov r1, lr + adds r1, r1, #2 /* Align to word. */ + lsrs r1, r1, #2 + lsls r0, r0, #2 + lsls r1, r1, #2 + ldr r0, [r1, r0] + adds r0, r0, r1 + mov lr, r0 + pop {r0, r1} + mov pc, lr /* We know we were called from thumb code. */ +ENDPROC(__gnu_thumb1_case_si) +.popsection #endif -- 2.34.1