stdatomic: i386/x86_64 support

Dmitry Selyutin committed 5 years ago

Commit 9ed3de91 parent 806b3f97 files · +136 −2Browse files

Unified · Split

7 files

@@ -42,8 +42,8 @@ $(X)BT_O += tcov.o · 41 unmodified lines
42	42
43	43	DSO_O = dsohandle.o
44	44
45		−I386_O = libtcc1.o alloca86.o alloca86-bt.o $(BT_O)
46		−X86_64_O = libtcc1.o alloca86_64.o alloca86_64-bt.o $(BT_O)
	45	+I386_O = libtcc1.o alloca86.o alloca86-bt.o $(BT_O) atomic-i386.o
	46	+X86_64_O = libtcc1.o alloca86_64.o alloca86_64-bt.o $(BT_O) atomic-x86_64.o
47	47	ARM_O = libtcc1.o armeabi.o alloca-arm.o armflush.o fetch_and_add_arm.o $(BT_O)
48	48	ARM64_O = lib-arm64.o fetch_and_add_arm64.o $(BT_O)
49	49	RISCV64_O = lib-arm64.o fetch_and_add_riscv64.o $(BT_O)

@@ -0,0 +1,19 @@
	1	+#pragma once
	2	+
	3	+#include <stdint.h>
	4	+
	5	+#include "atomic-x86.h"
	6	+
	7	+ATOMIC_X86_STORE(uint8_t, 1)
	8	+ATOMIC_X86_STORE(uint16_t, 2)
	9	+ATOMIC_X86_STORE(uint32_t, 4)
	10	+
	11	+ATOMIC_X86_LOAD(uint8_t, 1)
	12	+ATOMIC_X86_LOAD(uint16_t, 2)
	13	+ATOMIC_X86_LOAD(uint32_t, 4)
	14	+
	15	+ATOMIC_X86_COMPARE_EXCHANGE(uint8_t, 1, "b")
	16	+ATOMIC_X86_COMPARE_EXCHANGE(uint16_t, 2, "w")
	17	+ATOMIC_X86_COMPARE_EXCHANGE(uint32_t, 4, "l")
	18	+
	19	+#include "atomic-gen32.c"

@@ -0,0 +1,31 @@
	1	+#pragma once
	2	+
	3	+#include <stdbool.h>
	4	+#include <stdint.h>
	5	+
	6	+#define ATOMIC_X86_COMPARE_EXCHANGE(TYPE, MODE, SUFFIX) \
	7	+ bool __atomic_compare_exchange_##MODE(_Atomic(TYPE) atom, TYPE ref, TYPE xchg) \
	8	+ { \
	9	+ TYPE rv; \
	10	+ TYPE cmp = *ref; \
	11	+ asm volatile( \
	12	+ "lock cmpxchg" SUFFIX " %2,%1\n" \
	13	+ : "=a" (rv), "+m" (*atom) \
	14	+ : "q" (xchg), "0" (cmp) \
	15	+ : "memory" \
	16	+ ); \
	17	+ *ref = rv; \
	18	+ return (rv == cmp); \
	19	+ }
	20	+
	21	+#define ATOMIC_X86_LOAD(TYPE, MODE) \
	22	+ TYPE __atomic_load_##MODE(const _Atomic(TYPE) *atom) \
	23	+ { \
	24	+ return (volatile TYPE )atom; \
	25	+ }
	26	+
	27	+#define ATOMIC_X86_STORE(TYPE, MODE) \
	28	+ void __atomic_store_##MODE(_Atomic(TYPE) *atom, TYPE value) \
	29	+ { \
	30	+ (volatile TYPE )atom = value; \
	31	+ }

@@ -0,0 +1,12 @@
	1	+#pragma once
	2	+
	3	+#include <stdint.h>
	4	+
	5	+#include "atomic-x86.h"
	6	+#include "atomic-i386.c"
	7	+
	8	+ATOMIC_X86_STORE(uint64_t, 8)
	9	+ATOMIC_X86_LOAD(uint64_t, 8)
	10	+ATOMIC_X86_COMPARE_EXCHANGE(uint64_t, 8, "q")
	11	+
	12	+#include "atomic-gen64.c"

@@ -0,0 +1,39 @@
	1	+#pragma once
	2	+
	3	+#include <stdbool.h>
	4	+#include <stdint.h>
	5	+
	6	+#define ATOMIC_GEN_OP(TYPE, MODE, NAME, OP) \
	7	+ TYPE __atomic_##NAME##_##MODE(_Atomic(TYPE) *atom, TYPE value) \
	8	+ { \
	9	+ TYPE xchg; \
	10	+ TYPE cmp = __atomic_load(atom, __ATOMIC_RELAXED); \
	11	+ do { \
	12	+ xchg = (OP); \
	13	+ } while (!__atomic_compare_exchange(atom, &cmp, xchg, true, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)); \
	14	+ return cmp; \
	15	+ }
	16	+
	17	+#ifndef ATOMIC_EXCHANGE
	18	+# define ATOMIC_EXCHANGE(TYPE, MODE) ATOMIC_GEN_OP(TYPE, MODE, exchange, value)
	19	+#endif
	20	+
	21	+#ifndef ATOMIC_FETCH_ADD
	22	+# define ATOMIC_FETCH_ADD(TYPE, MODE) ATOMIC_GEN_OP(TYPE, MODE, fetch_add, (cmp + value))
	23	+#endif
	24	+
	25	+#ifndef ATOMIC_FETCH_SUB
	26	+# define ATOMIC_FETCH_SUB(TYPE, MODE) ATOMIC_GEN_OP(TYPE, MODE, fetch_sub, (cmp - value))
	27	+#endif
	28	+
	29	+#ifndef ATOMIC_FETCH_AND
	30	+# define ATOMIC_FETCH_AND(TYPE, MODE) ATOMIC_GEN_OP(TYPE, MODE, fetch_and, (cmp & value))
	31	+#endif
	32	+
	33	+#ifndef ATOMIC_FETCH_OR
	34	+# define ATOMIC_FETCH_OR(TYPE, MODE) ATOMIC_GEN_OP(TYPE, MODE, fetch_or, (cmp \| value))
	35	+#endif
	36	+
	37	+#ifndef ATOMIC_FETCH_XOR
	38	+# define ATOMIC_FETCH_XOR(TYPE, MODE) ATOMIC_GEN_OP(TYPE, MODE, fetch_xor, (cmp ^ value))
	39	+#endif

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