forked from Minki/linux
Blackfin: add support for restart_syscall()
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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@ -17,6 +17,7 @@
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#include <asm/cacheflush.h>
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#include <asm/ucontext.h>
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#include <asm/fixed_code.h>
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#include <asm/syscall.h>
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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@ -50,6 +51,9 @@ rt_restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *p
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unsigned long usp = 0;
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int err = 0;
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/* Always make any pending restarted system calls return -EINTR */
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current_thread_info()->restart_block.fn = do_no_restart_syscall;
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#define RESTORE(x) err |= __get_user(regs->x, &sc->sc_##x)
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/* restore passed registers */
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@ -237,6 +241,11 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
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regs->r0 = regs->orig_r0;
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regs->pc -= 2;
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break;
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case -ERESTART_RESTARTBLOCK:
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regs->p0 = __NR_restart_syscall;
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regs->pc -= 2;
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break;
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}
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}
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