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Commit 2663147d authored by Max Filippov's avatar Max Filippov
Browse files

xtensa: fix initialization of pt_regs::syscall in start_thread 



New pt_regs should indicate that there's no syscall, not that there's
syscall #0. While at it wrap macro body in do/while and parenthesize
macro arguments.

Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent 2201f31f

arch/xtensa/include/asm/processor.h

+12 −9
Original line number Diff line number Diff line
@@ -187,15 +187,18 @@ struct thread_struct { 


/* Clearing a0 terminates the backtrace. */

#define start_thread(regs, new_pc, new_sp) \

	memset(regs, 0, sizeof(*regs)); \

	regs->pc = new_pc; \

	regs->ps = USER_PS_VALUE; \

	regs->areg[1] = new_sp; \

	regs->areg[0] = 0; \

	regs->wmask = 1; \

	regs->depc = 0; \

	regs->windowbase = 0; \

	regs->windowstart = 1;

	do { \

		memset((regs), 0, sizeof(*(regs))); \

		(regs)->pc = (new_pc); \

		(regs)->ps = USER_PS_VALUE; \

		(regs)->areg[1] = (new_sp); \

		(regs)->areg[0] = 0; \

		(regs)->wmask = 1; \

		(regs)->depc = 0; \

		(regs)->windowbase = 0; \

		(regs)->windowstart = 1; \

		(regs)->syscall = NO_SYSCALL; \

	} while (0)



/* Forward declaration */

struct task_struct;