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Diffstat (limited to 'arch/riscv/include/asm/cmpxchg.h')
-rw-r--r--arch/riscv/include/asm/cmpxchg.h22
1 files changed, 12 insertions, 10 deletions
diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h
index ddb002ed89de..808b4c78462e 100644
--- a/arch/riscv/include/asm/cmpxchg.h
+++ b/arch/riscv/include/asm/cmpxchg.h
@@ -10,7 +10,7 @@
#include <asm/fence.h>
-#define __arch_xchg_masked(prepend, append, r, p, n) \
+#define __arch_xchg_masked(sc_sfx, prepend, append, r, p, n) \
({ \
u32 *__ptr32b = (u32 *)((ulong)(p) & ~0x3); \
ulong __s = ((ulong)(p) & (0x4 - sizeof(*p))) * BITS_PER_BYTE; \
@@ -25,7 +25,7 @@
"0: lr.w %0, %2\n" \
" and %1, %0, %z4\n" \
" or %1, %1, %z3\n" \
- " sc.w %1, %1, %2\n" \
+ " sc.w" sc_sfx " %1, %1, %2\n" \
" bnez %1, 0b\n" \
append \
: "=&r" (__retx), "=&r" (__rc), "+A" (*(__ptr32b)) \
@@ -46,7 +46,8 @@
: "memory"); \
})
-#define _arch_xchg(ptr, new, sfx, prepend, append) \
+#define _arch_xchg(ptr, new, sc_sfx, swap_sfx, prepend, \
+ sc_append, swap_append) \
({ \
__typeof__(ptr) __ptr = (ptr); \
__typeof__(*(__ptr)) __new = (new); \
@@ -55,15 +56,15 @@
switch (sizeof(*__ptr)) { \
case 1: \
case 2: \
- __arch_xchg_masked(prepend, append, \
+ __arch_xchg_masked(sc_sfx, prepend, sc_append, \
__ret, __ptr, __new); \
break; \
case 4: \
- __arch_xchg(".w" sfx, prepend, append, \
+ __arch_xchg(".w" swap_sfx, prepend, swap_append, \
__ret, __ptr, __new); \
break; \
case 8: \
- __arch_xchg(".d" sfx, prepend, append, \
+ __arch_xchg(".d" swap_sfx, prepend, swap_append, \
__ret, __ptr, __new); \
break; \
default: \
@@ -73,16 +74,17 @@
})
#define arch_xchg_relaxed(ptr, x) \
- _arch_xchg(ptr, x, "", "", "")
+ _arch_xchg(ptr, x, "", "", "", "", "")
#define arch_xchg_acquire(ptr, x) \
- _arch_xchg(ptr, x, "", "", RISCV_ACQUIRE_BARRIER)
+ _arch_xchg(ptr, x, "", "", "", \
+ RISCV_ACQUIRE_BARRIER, RISCV_ACQUIRE_BARRIER)
#define arch_xchg_release(ptr, x) \
- _arch_xchg(ptr, x, "", RISCV_RELEASE_BARRIER, "")
+ _arch_xchg(ptr, x, "", "", RISCV_RELEASE_BARRIER, "", "")
#define arch_xchg(ptr, x) \
- _arch_xchg(ptr, x, ".aqrl", "", "")
+ _arch_xchg(ptr, x, ".rl", ".aqrl", "", RISCV_FULL_BARRIER, "")
#define xchg32(ptr, x) \
({ \