{ \
unsigned long temp; \
__asm__ __volatile__( \
- " .set mips3 \n" \
- "1: ll %0, %1 \n" \
- " .set mips0 \n" \
- " addu %0, 1 \n" \
- " .set mips3 \n" \
- " sc %0, %1 \n" \
- " .set mips0 \n" \
- " beqz %0, 1b \n" \
+ " .set mips3 \n" \
+ "1: ll %0, %1 # load counter \n" \
+ " .set mips0 \n" \
+ " addu %0, 1 # increment \n" \
+ " .set mips3 \n" \
+ " sc %0, %1 # try to store, checking for atomicity \n" \
+ " .set mips0 \n" \
+ " beqz %0, 1b # if not atomic (0), try again \n" \
: "=&r" (temp), "=m" ((int)ref) \
: "m" ((int)ref) \
: "memory"); \
{ \
unsigned long temp; \
__asm__ __volatile__( \
- " .set mips3 \n" \
- "1: ll %0, %1 \n" \
- " .set mips0 \n" \
- " subu %0, 1 \n" \
- " .set mips3 \n" \
- " sc %0, %1 \n" \
- " .set mips0 \n" \
- " beqz %0, 1b \n" \
+ " .set mips3 \n" \
+ "1: ll %0, %1 \n" \
+ " .set mips0 \n" \
+ " subu %0, 1 # decrement \n" \
+ " .set mips3 \n" \
+ " sc %0, %1 \n" \
+ " .set mips0 \n" \
+ " beqz %0, 1b \n" \
: "=&r" (temp), "=m" ((int)ref) \
: "m" ((int)ref) \
: "memory"); \
if (!ref) \
delete this; \
}
+ #elif defined(__ppc__)
+ #define DECLARE_REF(x) \
+ private: oRefCount ref; \
+ public: void AddRef(); \
+ void Release();
+ #define DEFINE_REF(c) \
+ void c::AddRef() \
+ { \
+ int temp; \
+ __asm__ __volatile__( \
+ "1: lwarx %0, 0, %3 \n" \
+ " add %0, %2, %0 \n" \
+ " dcbt 0, %3 \n" \
+ " stwcx. %0, 0, %3 \n" \
+ " bne- 1b \n" \
+ : "=&r" (temp), "=m" ((int)ref) \
+ : "r" (1), "r" (&((int)ref)), "m" ((int)ref) \
+ : "cc"); \
+ } \
+ void c::Release() \
+ { \
+ int temp; \
+ __asm__ __volatile__( \
+ "1: lwarx %0, 0, %3 \n" \
+ " subf %0, %2, %0 \n" \
+ " dcbt 0, %3 \n" \
+ " stwcx. %0, 0, %3 \n" \
+ " bne- 1b \n" \
+ : "=&r" (temp), "=m" ((int)ref) \
+ : "r" (1), "r" (&((int)ref)), "m" ((int)ref) \
+ : "cc"); \
+ if (!ref) \
+ delete this; \
+ }
#else
#define DECLARE_REF(x) \
private:oRefCount ref; \