diff options
| author | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2008-03-26 13:40:36 +0000 |
|---|---|---|
| committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2008-03-26 13:40:36 +0000 |
| commit | efce79f09ae6daa77cd322df0d532beec3f445f5 (patch) | |
| tree | ae936850c5671b8bea0abf0d33bf2196f7abc796 /libc/string/arm/memcpy.S | |
| parent | 17e961d9c708ab202760ce830f8efe73e91bb129 (diff) | |
Paul Brook writes:
The attached patch adds support for compiling arm uClibc as pure Thumb code.
This is needed because some recent ARM codes do not implement traditional ARM
mode. Specifically:
* Cortex-M1 - An extremely minimal FPGA based core that only implements
Thumb-1 (aka ARMv6-M).
* Cortex-M3 - A Thumb-2 only ARMv7-M core.
Most of uClibc already builds in Thumb mode, all that is left are a handful of
assembly bits.
Tested on arm-uclinuxeabi.
Diffstat (limited to 'libc/string/arm/memcpy.S')
| -rw-r--r-- | libc/string/arm/memcpy.S | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/libc/string/arm/memcpy.S b/libc/string/arm/memcpy.S index 7a5b6ab76..d2013d211 100644 --- a/libc/string/arm/memcpy.S +++ b/libc/string/arm/memcpy.S @@ -38,16 +38,23 @@ */ #include <features.h> +#include <bits/arm_asm.h> .text .global memcpy .type memcpy,%function .align 4 +#if defined(__thumb__) && !defined(__thumb2__) +.thumb_func memcpy: - stmfd sp!, {r0, lr} + push {r0, lr} bl _memcpy - ldmfd sp!, {r0, pc} + POP_RET +#else +memcpy: + b _memcpy +#endif .size memcpy,.-memcpy |