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	DSO_O = dsohandle.o	43	DSO_O = dsohandle.o
44		44
45	I386_O = libtcc1.o alloca86.o alloca86-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)	46	X86_64_O = libtcc1.o alloca86_64.o alloca86_64-bt.o $(BT_O) atomic-x86_64.o
47	ARM_O = libtcc1.o armeabi.o alloca-arm.o armflush.o fetch_and_add_arm.o $(BT_O)	47	ARM_O = libtcc1.o armeabi.o alloca-arm.o armflush.o fetch_and_add_arm.o $(BT_O)
48	ARM64_O = lib-arm64.o fetch_and_add_arm64.o $(BT_O)	48	ARM64_O = lib-arm64.o fetch_and_add_arm64.o $(BT_O)
49	RISCV64_O = lib-arm64.o fetch_and_add_riscv64.o $(BT_O)	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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