Commit c74c0fd2 authored by Max Filippov's avatar Max Filippov
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xtensa: ISS: improve simcall assembly 



Drop redundant result moving from inline assembly, use a1 and b1 values
as return value and errno value respectively.

Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent 5e4417f9

arch/xtensa/platforms/iss/include/platform/simcall.h

+3 −5
Original line number Diff line number Diff line
@@ -66,19 +66,17 @@ static int errno; 


static inline int __simc(int a, int b, int c, int d)

{

	int ret;

	register int a1 asm("a2") = a;

	register int b1 asm("a3") = b;

	register int c1 asm("a4") = c;

	register int d1 asm("a5") = d;

	__asm__ __volatile__ (

			"simcall\n"

			"mov %0, a2\n"

			"mov %1, a3\n"

			: "=a" (ret), "=a" (errno), "+r"(a1), "+r"(b1)

			: "+r"(a1), "+r"(b1)

			: "r"(c1), "r"(d1)

			: "memory");

	return ret;

	errno = b1;

	return a1;

}



static inline int simc_exit(int exit_code)

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