diff options
Diffstat (limited to 'nuttx/arch/arm/src/armv7-m/up_memcpy.S')
| -rw-r--r-- | nuttx/arch/arm/src/armv7-m/up_memcpy.S | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/armv7-m/up_memcpy.S b/nuttx/arch/arm/src/armv7-m/up_memcpy.S index ea267f78f..84877b040 100644 --- a/nuttx/arch/arm/src/armv7-m/up_memcpy.S +++ b/nuttx/arch/arm/src/armv7-m/up_memcpy.S @@ -142,11 +142,26 @@ MEM_LongCopyTable: * Input Parameters: * r0 = destination, r1 = source, r2 = length * + * Returned Value: + * r0 = destination r1-r3 burned + * ************************************************************************************/ + .align 4 .thumb_func + memcpy: push {r14} + push {r0} + bl _do_memcpy + pop {r0} + pop {pc} + + .align 4 + + .thumb_func +_do_memcpy: + push {r14} /* This allows the inner workings to "assume" a minimum amount of bytes */ /* Quickly check for very short copies */ |