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      1  1.5     skrll /*	$NetBSD: sigcode.S,v 1.5 2016/07/27 09:32:35 skrll Exp $	*/
      2  1.1  nisimura 
      3  1.2  christos #include "opt_compat_netbsd.h"
      4  1.1  nisimura #include "opt_compat_ultrix.h"
      5  1.1  nisimura #include "opt_compat_linux.h"
      6  1.1  nisimura 
      7  1.2  christos #include <mips/signal.h>
      8  1.1  nisimura #include <sys/syscall.h>
      9  1.1  nisimura #ifdef COMPAT_ULTRIX
     10  1.1  nisimura #include <compat/ultrix/ultrix_syscall.h>
     11  1.1  nisimura #endif
     12  1.1  nisimura #ifdef COMPAT_LINUX
     13  1.1  nisimura #include <compat/linux/linux_syscall.h>
     14  1.1  nisimura #endif
     15  1.1  nisimura 
     16  1.1  nisimura #include <mips/asm.h>
     17  1.5     skrll 
     18  1.5     skrll RCSID("$NetBSD: sigcode.S,v 1.5 2016/07/27 09:32:35 skrll Exp $")
     19  1.5     skrll 
     20  1.1  nisimura #include "assym.h"
     21  1.1  nisimura 
     22  1.1  nisimura 	.set	noreorder
     23  1.1  nisimura 
     24  1.2  christos #ifdef COMPAT_16
     25  1.1  nisimura /*
     26  1.1  nisimura  * This code is copied the user's stack for returning from signal handlers
     27  1.1  nisimura  * (see sendsig() and sigreturn()). We have to compute the address
     28  1.1  nisimura  * of the sigcontext struct for the sigreturn call.
     29  1.1  nisimura  *
     30  1.1  nisimura  * NB: we cannot profile sigcode(), it executes from userspace.
     31  1.1  nisimura  */
     32  1.1  nisimura LEAF_NOPROFILE(sigcode)
     33  1.1  nisimura 	move	a0, sp			# address of sigcontext
     34  1.2  christos 	li	v0, SYS_compat_16___sigreturn14	# sigreturn(scp)
     35  1.1  nisimura 	syscall
     36  1.1  nisimura 	break	0			# just in case sigreturn fails
     37  1.1  nisimura END(sigcode)
     38  1.1  nisimura XLEAF(esigcode)
     39  1.2  christos #endif
     40  1.1  nisimura 
     41  1.1  nisimura #ifdef COMPAT_ULTRIX
     42  1.1  nisimura LEAF_NOPROFILE(ultrix_sigcode)
     43  1.1  nisimura 	move	a0, sp			# address of sigcontext
     44  1.1  nisimura 	li	v0, ULTRIX_SYS_sigreturn	# sigreturn(scp)
     45  1.1  nisimura 	syscall
     46  1.1  nisimura 	break	0			# just in case sigreturn fails
     47  1.1  nisimura END(ultrix_sigcode)
     48  1.1  nisimura XLEAF(ultrix_esigcode)
     49  1.1  nisimura #endif
     50  1.1  nisimura 
     51  1.1  nisimura #ifdef COMPAT_LINUX
     52  1.1  nisimura #define SYSCALL_SHIFT 4000		# 4000 shift as in linux_syscall.c
     53  1.1  nisimura LEAF_NOPROFILE(linux_sigcode)
     54  1.1  nisimura 	move	a0, sp			# address of sigcontext
     55  1.1  nisimura 	li	v0, LINUX_SYS_sigreturn	+ SYSCALL_SHIFT # sigreturn(sf)
     56  1.1  nisimura 	syscall
     57  1.1  nisimura 	break	0			# just in case sigreturn fails
     58  1.1  nisimura END(linux_sigcode)
     59  1.1  nisimura XLEAF(linux_esigcode)
     60  1.1  nisimura #undef SYSCALL_SHIFT
     61  1.1  nisimura #endif
     62