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93c89cc242af1263b16176adb47fa7cab8aba2d0 blob 761 bytes (raw)

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#define a_barrier a_barrier
static inline void a_barrier()
{
	__asm__ __volatile__ ("fence rw,rw" : : : "memory");
}

#define a_ll a_ll
static inline int a_ll(volatile int *p)
{
	int v;
	__asm__ __volatile__ ("lr.w %0, (%1)" : "=&r"(v) : "r"(p));
	return v;
}

#define a_sc a_sc
static inline int a_sc(volatile int *p, int v)
{
	int r;
	__asm__ __volatile__ ("sc.w %0, %2, (%1)" : "=&r"(r) : "r"(p), "r"(v) : "memory");
	return !r;
}

#define a_cas a_cas
static inline int a_cas(volatile int *p, int t, int s)
{
	int old, tmp;
	__asm__("1:  lr.w    %0, %2      \n"
		"    bne     %0, %3, 1f  \n"
		"    sc.w    %1, %4, %2  \n"
		"    bnez    %1, 1b      \n"
		"1:                      \n"
		: "=&r"(old), "+r"(tmp), "+A"(*p)
		: "r"(t), "r"(s));
	return old;
}
debug log:

solving 93c89cc ...
found 93c89cc in https://inbox.vuxu.org/musl/20180928022404.GQ17995@brightrain.aerifal.cx/

applying [1/1] https://inbox.vuxu.org/musl/20180928022404.GQ17995@brightrain.aerifal.cx/
diff --git a/arch/riscv32/atomic_arch.h b/arch/riscv32/atomic_arch.h
new file mode 100644
index 0000000..93c89cc

Checking patch arch/riscv32/atomic_arch.h...
Applied patch arch/riscv32/atomic_arch.h cleanly.

index at:
100644 93c89cc242af1263b16176adb47fa7cab8aba2d0	arch/riscv32/atomic_arch.h

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