diff options
author | peter <peter@FreeBSD.org> | 1999-10-04 16:24:08 +0000 |
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committer | peter <peter@FreeBSD.org> | 1999-10-04 16:24:08 +0000 |
commit | 556bfe0799c960940eae435630faaa4a59d68107 (patch) | |
tree | 9883aabf813e06763d97ce12021511618c5f3ac6 /sys | |
parent | fb976dbce4705a5834491e7067f7f367f10e6fcf (diff) | |
download | FreeBSD-src-556bfe0799c960940eae435630faaa4a59d68107.zip FreeBSD-src-556bfe0799c960940eae435630faaa4a59d68107.tar.gz |
Use the rev 1.1.2.1 code from RELENG_3 for atomic operations rather
than the non-atomic C macros.
Diffstat (limited to 'sys')
-rw-r--r-- | sys/amd64/include/atomic.h | 57 | ||||
-rw-r--r-- | sys/i386/include/atomic.h | 57 |
2 files changed, 76 insertions, 38 deletions
diff --git a/sys/amd64/include/atomic.h b/sys/amd64/include/atomic.h index 07b55fc..05167aa 100644 --- a/sys/amd64/include/atomic.h +++ b/sys/amd64/include/atomic.h @@ -76,6 +76,8 @@ * The assembly is volatilized to demark potential before-and-after side * effects if an interrupt or SMP collision were to occur. */ +#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 9) +/* egcs 1.1.2+ version */ #define ATOMIC_ASM(NAME, TYPE, OP, V) \ static __inline void \ atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ @@ -84,9 +86,23 @@ atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ : "=m" (*p) \ : "0" (*p), "ir" (V)); \ } + +#else +/* gcc <= 2.8 version */ +#define ATOMIC_ASM(NAME, TYPE, OP, V) \ +static __inline void \ +atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ +{ \ + __asm __volatile(MPLOCKED OP \ + : "=m" (*p) \ + : "ir" (V)); \ +} +#endif #endif /* KLD_MODULE */ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 9) + +/* egcs 1.1.2+ version */ ATOMIC_ASM(set, char, "orb %2,%0", v) ATOMIC_ASM(clear, char, "andb %2,%0", ~v) ATOMIC_ASM(add, char, "addb %2,%0", v) @@ -108,25 +124,28 @@ ATOMIC_ASM(add, long, "addl %2,%0", v) ATOMIC_ASM(subtract, long, "subl %2,%0", v) #else -#define atomic_set_char(P, V) (*(u_char*)(P) |= (V)) -#define atomic_clear_char(P, V) (*(u_char*)(P) &= ~(V)) -#define atomic_add_char(P, V) (*(u_char*)(P) += (V)) -#define atomic_subtract_char(P, V) (*(u_char*)(P) -= (V)) - -#define atomic_set_short(P, V) (*(u_short*)(P) |= (V)) -#define atomic_clear_short(P, V) (*(u_short*)(P) &= ~(V)) -#define atomic_add_short(P, V) (*(u_short*)(P) += (V)) -#define atomic_subtract_short(P, V) (*(u_short*)(P) -= (V)) - -#define atomic_set_int(P, V) (*(u_int*)(P) |= (V)) -#define atomic_clear_int(P, V) (*(u_int*)(P) &= ~(V)) -#define atomic_add_int(P, V) (*(u_int*)(P) += (V)) -#define atomic_subtract_int(P, V) (*(u_int*)(P) -= (V)) - -#define atomic_set_long(P, V) (*(u_long*)(P) |= (V)) -#define atomic_clear_long(P, V) (*(u_long*)(P) &= ~(V)) -#define atomic_add_long(P, V) (*(u_long*)(P) += (V)) -#define atomic_subtract_long(P, V) (*(u_long*)(P) -= (V)) + +/* gcc <= 2.8 version */ +ATOMIC_ASM(set, char, "orb %1,%0", v) +ATOMIC_ASM(clear, char, "andb %1,%0", ~v) +ATOMIC_ASM(add, char, "addb %1,%0", v) +ATOMIC_ASM(subtract, char, "subb %1,%0", v) + +ATOMIC_ASM(set, short, "orw %1,%0", v) +ATOMIC_ASM(clear, short, "andw %1,%0", ~v) +ATOMIC_ASM(add, short, "addw %1,%0", v) +ATOMIC_ASM(subtract, short, "subw %1,%0", v) + +ATOMIC_ASM(set, int, "orl %1,%0", v) +ATOMIC_ASM(clear, int, "andl %1,%0", ~v) +ATOMIC_ASM(add, int, "addl %1,%0", v) +ATOMIC_ASM(subtract, int, "subl %1,%0", v) + +ATOMIC_ASM(set, long, "orl %1,%0", v) +ATOMIC_ASM(clear, long, "andl %1,%0", ~v) +ATOMIC_ASM(add, long, "addl %1,%0", v) +ATOMIC_ASM(subtract, long, "subl %1,%0", v) + #endif #endif /* ! _MACHINE_ATOMIC_H_ */ diff --git a/sys/i386/include/atomic.h b/sys/i386/include/atomic.h index 07b55fc..05167aa 100644 --- a/sys/i386/include/atomic.h +++ b/sys/i386/include/atomic.h @@ -76,6 +76,8 @@ * The assembly is volatilized to demark potential before-and-after side * effects if an interrupt or SMP collision were to occur. */ +#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 9) +/* egcs 1.1.2+ version */ #define ATOMIC_ASM(NAME, TYPE, OP, V) \ static __inline void \ atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ @@ -84,9 +86,23 @@ atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ : "=m" (*p) \ : "0" (*p), "ir" (V)); \ } + +#else +/* gcc <= 2.8 version */ +#define ATOMIC_ASM(NAME, TYPE, OP, V) \ +static __inline void \ +atomic_##NAME##_##TYPE(volatile u_##TYPE *p, u_##TYPE v)\ +{ \ + __asm __volatile(MPLOCKED OP \ + : "=m" (*p) \ + : "ir" (V)); \ +} +#endif #endif /* KLD_MODULE */ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 9) + +/* egcs 1.1.2+ version */ ATOMIC_ASM(set, char, "orb %2,%0", v) ATOMIC_ASM(clear, char, "andb %2,%0", ~v) ATOMIC_ASM(add, char, "addb %2,%0", v) @@ -108,25 +124,28 @@ ATOMIC_ASM(add, long, "addl %2,%0", v) ATOMIC_ASM(subtract, long, "subl %2,%0", v) #else -#define atomic_set_char(P, V) (*(u_char*)(P) |= (V)) -#define atomic_clear_char(P, V) (*(u_char*)(P) &= ~(V)) -#define atomic_add_char(P, V) (*(u_char*)(P) += (V)) -#define atomic_subtract_char(P, V) (*(u_char*)(P) -= (V)) - -#define atomic_set_short(P, V) (*(u_short*)(P) |= (V)) -#define atomic_clear_short(P, V) (*(u_short*)(P) &= ~(V)) -#define atomic_add_short(P, V) (*(u_short*)(P) += (V)) -#define atomic_subtract_short(P, V) (*(u_short*)(P) -= (V)) - -#define atomic_set_int(P, V) (*(u_int*)(P) |= (V)) -#define atomic_clear_int(P, V) (*(u_int*)(P) &= ~(V)) -#define atomic_add_int(P, V) (*(u_int*)(P) += (V)) -#define atomic_subtract_int(P, V) (*(u_int*)(P) -= (V)) - -#define atomic_set_long(P, V) (*(u_long*)(P) |= (V)) -#define atomic_clear_long(P, V) (*(u_long*)(P) &= ~(V)) -#define atomic_add_long(P, V) (*(u_long*)(P) += (V)) -#define atomic_subtract_long(P, V) (*(u_long*)(P) -= (V)) + +/* gcc <= 2.8 version */ +ATOMIC_ASM(set, char, "orb %1,%0", v) +ATOMIC_ASM(clear, char, "andb %1,%0", ~v) +ATOMIC_ASM(add, char, "addb %1,%0", v) +ATOMIC_ASM(subtract, char, "subb %1,%0", v) + +ATOMIC_ASM(set, short, "orw %1,%0", v) +ATOMIC_ASM(clear, short, "andw %1,%0", ~v) +ATOMIC_ASM(add, short, "addw %1,%0", v) +ATOMIC_ASM(subtract, short, "subw %1,%0", v) + +ATOMIC_ASM(set, int, "orl %1,%0", v) +ATOMIC_ASM(clear, int, "andl %1,%0", ~v) +ATOMIC_ASM(add, int, "addl %1,%0", v) +ATOMIC_ASM(subtract, int, "subl %1,%0", v) + +ATOMIC_ASM(set, long, "orl %1,%0", v) +ATOMIC_ASM(clear, long, "andl %1,%0", ~v) +ATOMIC_ASM(add, long, "addl %1,%0", v) +ATOMIC_ASM(subtract, long, "subl %1,%0", v) + #endif #endif /* ! _MACHINE_ATOMIC_H_ */ |