From: Nathael Pajani <nathael.pajani@ed3l.fr>
Date: Thu, 28 Aug 2014 17:34:47 +0000 (+0200)
Subject: Sometimes GCC needs Low registers instead of general ones, but we need to tell him... 
X-Git-Url: http://git.techno-innov.fr/?a=commitdiff_plain;h=73d74cff41aaea25e3617b8175fa189763af1f94;p=soft%2Flpc122x%2Fcore

Sometimes GCC needs Low registers instead of general ones, but we need to tell him he can use them. Maybe necessary in other places, but at least fixes the problem i have on my test system. Special thanks to cyprien, once again !
---

diff --git a/include/core/lpc_core_cm0.h b/include/core/lpc_core_cm0.h
index 96131bd..90311de 100644
--- a/include/core/lpc_core_cm0.h
+++ b/include/core/lpc_core_cm0.h
@@ -148,21 +148,21 @@ static inline void set_fault_mask(uint32_t mask)
 static inline uint32_t double_byte_swap_16(volatile uint32_t value)
 {
 	uint32_t result = 0;
-	__asm volatile ("rev16 %0, %1" : "=r" (result) : "r" (value));
+	__asm volatile ("rev16 %0, %1" : "=l" (result) : "l" (value));
 	return result;
 }
 /* Change endianness of a 16-bit halfword */
 static inline uint32_t byte_swap_16(volatile uint16_t value)
 {
 	uint32_t result = 0;
-	__asm volatile ("rev16 %0, %1" : "=r" (result) : "r" (value));
+	__asm volatile ("rev16 %0, %1" : "=l" (result) : "l" (value));
 	return (result & 0xFFFF);
 }
 /* Change endianness of a 32-bit word */
 static inline uint32_t byte_swap_32(volatile uint32_t value)
 {
 	uint32_t result = 0;
-	__asm volatile ("rev %0, %1" : "=r" (result) : "r" (value));
+	__asm volatile ("rev %0, %1" : "=l" (result) : "l" (value));
 	return result;
 }