From 2bf9c1551d503f29f0ff3148dd08fd9117eb6a39 Mon Sep 17 00:00:00 2001
From: deraadt <deraadt@openbsd.org>
Date: Mon, 3 Feb 1997 15:04:50 +0000
Subject: [PATCH] More siginfo implementations (alpha and mips might even work)
 move "siginfo_t *" to 2nd arg of signal handler as 1003.1b requires. I really
 wish I had 1003.1b documentation.

---
 sys/arch/alpha/alpha/machdep.c     | 21 +++++++++++++++++----
 sys/arch/amiga/amiga/locore.s      |  7 +++----
 sys/arch/amiga/amiga/machdep.c     |  9 ++++-----
 sys/arch/arc/arc/machdep.c         | 21 +++++++++++++++++----
 sys/arch/i386/i386/locore.s        |  2 +-
 sys/arch/i386/i386/machdep.c       |  5 ++---
 sys/arch/i386/include/frame.h      |  3 +--
 sys/arch/mvme68k/mvme68k/locore.s  | 11 +++++------
 sys/arch/mvme68k/mvme68k/machdep.c |  8 +++-----
 sys/arch/pmax/pmax/machdep.c       | 17 +++++++++++++++--
 sys/arch/sparc/sparc/locore.s      |  2 +-
 sys/arch/sparc/sparc/machdep.c     | 15 ++++++---------
 12 files changed, 75 insertions(+), 46 deletions(-)

diff --git a/sys/arch/alpha/alpha/machdep.c b/sys/arch/alpha/alpha/machdep.c
index 87cb15c33af..26b8ac2d50d 100644
--- a/sys/arch/alpha/alpha/machdep.c
+++ b/sys/arch/alpha/alpha/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.16 1997/02/03 13:09:14 deraadt Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.17 1997/02/03 15:05:02 deraadt Exp $	*/
 /*	$NetBSD: machdep.c,v 1.61 1996/12/07 01:54:49 cgd Exp $	*/
 
 /*
@@ -1145,14 +1145,20 @@ sendsig(catcher, sig, mask, code, type, val)
 	struct sigcontext *scp, ksc;
 	struct trapframe *frame;
 	struct sigacts *psp = p->p_sigacts;
-	int oonstack, fsize, rndfsize;
+	int oonstack, fsize, rndfsize, kscsize;
 	extern char sigcode[], esigcode[];
 	extern struct proc *fpcurproc;
+	siginfo_t *sip, ksi;
 
 	frame = p->p_md.md_tf;
 	oonstack = psp->ps_sigstk.ss_flags & SS_ONSTACK;
 	fsize = sizeof ksc;
 	rndfsize = ((fsize + 15) / 16) * 16;
+	kscsize = rndfsize;
+	if (psp->ps_siginfo & sigmask(sig)) {
+		fsize += sizeof ksi;
+		rndfsize = ((fsize + 15) / 16) * 16;
+	}
 	/*
 	 * Allocate and validate space for the signal handler
 	 * context. Note that if the stack is in P0 space, the
@@ -1227,10 +1233,16 @@ sendsig(catcher, sig, mask, code, type, val)
 	 */
 #endif
 
+	if (psp->ps_siginfo & sigmask(sig)) {
+		initsiginfo(&ksi, sig, code, type, val);
+		sip = (void *)scp + kscsize;
+		(void) copyout((caddr_t)&ksi, (caddr_t)sip, fsize - kscsize);
+	}
+
 	/*
 	 * copy the frame out to userland.
 	 */
-	(void) copyout((caddr_t)&ksc, (caddr_t)scp, fsize);
+	(void) copyout((caddr_t)&ksc, (caddr_t)scp, kscsize);
 #ifdef DEBUG
 	if (sigdebug & SDB_FOLLOW)
 		printf("sendsig(%d): sig %d scp %p code %lx\n", p->p_pid, sig,
@@ -1243,7 +1255,8 @@ sendsig(catcher, sig, mask, code, type, val)
 	frame->tf_regs[FRAME_PC] =
 	    (u_int64_t)PS_STRINGS - (esigcode - sigcode);
 	frame->tf_regs[FRAME_A0] = sig;
-	frame->tf_regs[FRAME_A1] = code;
+	frame->tf_regs[FRAME_A1] = (psp->ps_siginfo & sigmask(sig)) ?
+	    (u_int64_t)sip : NULL;
 	frame->tf_regs[FRAME_A2] = (u_int64_t)scp;
 	frame->tf_regs[FRAME_T12] = (u_int64_t)catcher;		/* t12 is pv */
 	alpha_pal_wrusp((unsigned long)scp);
diff --git a/sys/arch/amiga/amiga/locore.s b/sys/arch/amiga/amiga/locore.s
index ec274be347c..f63557eeb69 100644
--- a/sys/arch/amiga/amiga/locore.s
+++ b/sys/arch/amiga/amiga/locore.s
@@ -1,4 +1,4 @@
-/*	$OpenBSD: locore.s,v 1.14 1997/02/03 11:38:05 deraadt Exp $	*/
+/*	$OpenBSD: locore.s,v 1.15 1997/02/03 15:05:04 deraadt Exp $	*/
 /*	$NetBSD: locore.s,v 1.72 1996/12/17 11:09:10 is Exp $	*/
 
 /*
@@ -1147,9 +1147,8 @@ _proc_trampoline:
  * Stack looks like:
  *
  *	sp+0 ->	signal number
- *	sp+4	signal specific code
+ *	sp+4	pointer to siginfo (sip)
  *	sp+8	pointer to signal context frame (scp)
- *	sp+12	pointer to siginfo (sip)
  *	sp+16	address of handler
  *	sp+30	saved hardware state
  *			.
@@ -1159,7 +1158,7 @@ _proc_trampoline:
 	.globl	_sigcode, _esigcode
 	.data
 _sigcode:
-	movl	sp@(16),a0		| signal handler addr	(4 bytes)
+	movl	sp@(12),a0		| signal handler addr	(4 bytes)
 	jsr	a0@			| call signal handler	(2 bytes)
 	addql	#4,sp			| pop signo		(2 bytes)
 	trap	#1			| special syscall entry	(2 bytes)
diff --git a/sys/arch/amiga/amiga/machdep.c b/sys/arch/amiga/amiga/machdep.c
index 223ce297bba..f154dd77e87 100644
--- a/sys/arch/amiga/amiga/machdep.c
+++ b/sys/arch/amiga/amiga/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.20 1997/02/03 12:48:35 deraadt Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.21 1997/02/03 15:05:06 deraadt Exp $	*/
 /*	$NetBSD: machdep.c,v 1.82 1996/12/17 07:32:54 is Exp $	*/
 
 /*
@@ -725,13 +725,12 @@ struct sigstate {
  */
 struct sigframe {
 	int	sf_signum;		/* signo for handler */
-	int	sf_code;		/* additional info for handler */
+	siginfo_t *sf_sip;		/* pointer to siginfo_t */
 	struct	sigcontext *sf_scp;	/* context ptr for handler */
-	siginfo_t *sf_sip;
 	sig_t	sf_handler;		/* handler addr for u_sigc */
 	struct	sigstate sf_state;	/* state of the hardware */
 	struct	sigcontext sf_sc;	/* actual context */
-	siginfo_t sf_si;
+	siginfo_t sf_si;		/* actual siginfo_t */
 };
 
 #ifdef DEBUG
@@ -815,7 +814,7 @@ printf("sendsig %d %d %x %x %x\n", p->p_pid, sig, mask, code, catcher);
 	 * Build the argument list for the signal handler.
 	 */
 	kfp->sf_signum = sig;
-	kfp->sf_code = code;
+	kfp->sf_sip = NULL;
 	kfp->sf_scp = &fp->sf_sc;
 	kfp->sf_handler = catcher;
 	/*
diff --git a/sys/arch/arc/arc/machdep.c b/sys/arch/arc/arc/machdep.c
index 77f3414f72b..508d98a27bb 100644
--- a/sys/arch/arc/arc/machdep.c
+++ b/sys/arch/arc/arc/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.19 1997/02/02 00:47:42 deraadt Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.20 1997/02/03 15:05:08 deraadt Exp $	*/
 /*
  * Copyright (c) 1988 University of Utah.
  * Copyright (c) 1992, 1993
@@ -38,7 +38,7 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)machdep.c	8.3 (Berkeley) 1/12/94
- *      $Id: machdep.c,v 1.19 1997/02/02 00:47:42 deraadt Exp $
+ *      $Id: machdep.c,v 1.20 1997/02/03 15:05:08 deraadt Exp $
  */
 
 /* from: Utah Hdr: machdep.c 1.63 91/04/24 */
@@ -725,10 +725,11 @@ setregs(p, pack, stack, retval)
  */
 struct sigframe {
 	int	sf_signum;		/* signo for handler */
-	int	sf_code;		/* additional info for handler */
+	siginfo_t *sf_sip;		/* pointer to siginfo_t */
 	struct	sigcontext *sf_scp;	/* context ptr for handler */
 	sig_t	sf_handler;		/* handler addr for u_sigc */
 	struct	sigcontext sf_sc;	/* actual context */
+	siginfo_t sf_si;
 };
 
 #ifdef DEBUG
@@ -768,6 +769,8 @@ sendsig(catcher, sig, mask, code, type, val)
 	 * the space with a `brk'.
 	 */
 	fsize = sizeof(struct sigframe);
+	if (!(psp->ps_siginfo & sigmask(sig)))
+		fsize -= sizeof(siginfo_t);
 	if ((psp->ps_flags & SAS_ALTSTACK) &&
 	    (psp->ps_sigstk.ss_flags & SA_ONSTACK) == 0 &&
 	    (psp->ps_sigonstack & sigmask(sig))) {
@@ -805,7 +808,17 @@ sendsig(catcher, sig, mask, code, type, val)
 		bcopy((caddr_t)&p->p_md.md_regs[F0], (caddr_t)ksc.sc_fpregs,
 			sizeof(ksc.sc_fpregs));
 	}
+
+	if (psp->ps_siginfo & sigmask(sig)) {
+		siginfo_t si;
+
+		initsiginfo(&si, sig, code, type, val);
+		if (copyout((caddr_t)&si, (caddr_t)&fp->sf_si, sizeof si))
+			goto bail;
+	}
+
 	if (copyout((caddr_t)&ksc, (caddr_t)&fp->sf_sc, sizeof(ksc))) {
+bail:
 		/*
 		 * Process has trashed its stack; give it an illegal
 		 * instruction to halt it in its tracks.
@@ -822,7 +835,7 @@ sendsig(catcher, sig, mask, code, type, val)
 	 * Build the argument list for the signal handler.
 	 */
 	regs[A0] = sig;
-	regs[A1] = code;
+	regs[A1] = (psp->ps_siginfo & sigmask(sig)) ? (int)&fp->sf_si : NULL;
 	regs[A2] = (int)&fp->sf_sc;
 	regs[A3] = (int)catcher;
 
diff --git a/sys/arch/i386/i386/locore.s b/sys/arch/i386/i386/locore.s
index 752c612d51b..ef1675332b7 100644
--- a/sys/arch/i386/i386/locore.s
+++ b/sys/arch/i386/i386/locore.s
@@ -2040,7 +2040,7 @@ IDTVEC(fpu)
 	pushl	%esp
 	incl	_cnt+V_TRAP
 	call	_npxintr
-	addl	$4,%esp
+	addl	$8,%esp
 	INTRFASTEXIT
 #else
 	ZTRAP(T_ARITHTRAP)
diff --git a/sys/arch/i386/i386/machdep.c b/sys/arch/i386/i386/machdep.c
index b90136c2ceb..5564f0c4953 100644
--- a/sys/arch/i386/i386/machdep.c
+++ b/sys/arch/i386/i386/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.40 1997/02/03 12:48:58 deraadt Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.41 1997/02/03 15:04:50 deraadt Exp $	*/
 /*	$NetBSD: machdep.c,v 1.202 1996/05/18 15:54:59 christos Exp $	*/
 
 /*-
@@ -631,10 +631,9 @@ sendsig(catcher, sig, mask, code, type, val)
 		fp = (struct sigframe *)tf->tf_esp - 1;
 	}
 
-	frame.sf_code = code;
 	frame.sf_scp = &fp->sf_sc;
-	frame.sf_handler = catcher;
 	frame.sf_sip = NULL;
+	frame.sf_handler = catcher;
 
 	/*
 	 * Build the signal context to be used by sigreturn.
diff --git a/sys/arch/i386/include/frame.h b/sys/arch/i386/include/frame.h
index 8b9d043d00d..d2bea05400f 100644
--- a/sys/arch/i386/include/frame.h
+++ b/sys/arch/i386/include/frame.h
@@ -115,9 +115,8 @@ struct switchframe {
  */
 struct sigframe {
 	int	sf_signum;
-	int	sf_code;
-	struct	sigcontext *sf_scp;
 	siginfo_t *sf_sip;
+	struct	sigcontext *sf_scp;
 	sig_t	sf_handler;
 	struct	sigcontext sf_sc;
 	siginfo_t sf_si;
diff --git a/sys/arch/mvme68k/mvme68k/locore.s b/sys/arch/mvme68k/mvme68k/locore.s
index 8ac53ca9b19..89f4dfd53c8 100644
--- a/sys/arch/mvme68k/mvme68k/locore.s
+++ b/sys/arch/mvme68k/mvme68k/locore.s
@@ -1,4 +1,4 @@
-/*	$OpenBSD: locore.s,v 1.11 1997/01/28 09:01:02 deraadt Exp $ */
+/*	$OpenBSD: locore.s,v 1.12 1997/02/03 15:04:57 deraadt Exp $ */
 
 /*
  * Copyright (c) 1995 Theo de Raadt
@@ -527,11 +527,10 @@ _proc_trampoline:
  * Stack looks like:
  *
  *	sp+0 ->	signal number
- *	sp+4	signal specific code
+ *	sp+4	pointer to siginfo (sip)
  *	sp+8	pointer to signal context frame (scp)
- *	sp+12	pointer to siginfo (sip)
- *	sp+16	address of handler
- *	sp+20	saved hardware state
+ *	sp+12	address of handler
+ *	sp+16	saved hardware state
  *			.
  *			.
  *	scp+0->	beginning of signal context frame
@@ -539,7 +538,7 @@ _proc_trampoline:
 	.globl	_sigcode, _esigcode, _sigcodetrap
 	.data
 _sigcode:
-	movl	sp@(16),a0		| signal handler addr	(4 bytes)
+	movl	sp@(12),a0		| signal handler addr	(4 bytes)
 	jsr	a0@			| call signal handler	(2 bytes)
 	addql	#4,sp			| pop signo		(2 bytes)
 _sigcodetrap:
diff --git a/sys/arch/mvme68k/mvme68k/machdep.c b/sys/arch/mvme68k/mvme68k/machdep.c
index 73723971129..4f2dd54ab4c 100644
--- a/sys/arch/mvme68k/mvme68k/machdep.c
+++ b/sys/arch/mvme68k/mvme68k/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.17 1997/02/03 12:48:52 deraadt Exp $ */
+/*	$OpenBSD: machdep.c,v 1.18 1997/02/03 15:04:58 deraadt Exp $ */
 
 /*
  * Copyright (c) 1995 Theo de Raadt
@@ -631,9 +631,8 @@ struct sigstate {
  */
 struct sigframe {
 	int	sf_signum;		/* signo for handler */
-	int	sf_code;		/* additional info for handler */
-	struct	sigcontext *sf_scp;	/* context ptr for handler */
 	siginfo_t *sf_sip;
+	struct	sigcontext *sf_scp;	/* context ptr for handler */
 	sig_t	sf_handler;		/* handler addr for u_sigc */
 	struct	sigstate sf_state;	/* state of the hardware */
 	struct	sigcontext sf_sc;	/* actual context */
@@ -751,10 +750,9 @@ sendsig(catcher, sig, mask, code, type, val)
 	 * Build the argument list for the signal handler.
 	 */
 	kfp->sf_signum = sig;
-	kfp->sf_code = code;
+	kfp->sf_sip = NULL;
 	kfp->sf_scp = &fp->sf_sc;
 	kfp->sf_handler = catcher;
-	kfp->sf_sip = NULL;
 
 	/*
 	 * Save necessary hardware state.  Currently this includes:
diff --git a/sys/arch/pmax/pmax/machdep.c b/sys/arch/pmax/pmax/machdep.c
index e1ca75aa662..932b07f0fba 100644
--- a/sys/arch/pmax/pmax/machdep.c
+++ b/sys/arch/pmax/pmax/machdep.c
@@ -925,10 +925,11 @@ setregs(p, pack, stack, retval)
  */
 struct sigframe {
 	int	sf_signum;		/* signo for handler */
-	int	sf_code;		/* additional info for handler */
+	siginfo_t *sf_sip;		/* pointer to siginfo_t */
 	struct	sigcontext *sf_scp;	/* context ptr for handler */
 	sig_t	sf_handler;		/* handler addr for u_sigc */
 	struct	sigcontext sf_sc;	/* actual context */
+	siginfo_t sf_si;
 };
 
 #ifdef DEBUG
@@ -968,6 +969,8 @@ sendsig(catcher, sig, mask, code, type, val)
 	 * the space with a `brk'.
 	 */
 	fsize = sizeof(struct sigframe);
+	if (!(psp->ps_siginfo & sigmask(sig)))
+		fsize -= sizeof(siginfo_t);
 	if ((psp->ps_flags & SAS_ALTSTACK) &&
 	    (psp->ps_sigstk.ss_flags & SS_ONSTACK) == 0 &&
 	    (psp->ps_sigonstack & sigmask(sig))) {
@@ -1005,7 +1008,17 @@ sendsig(catcher, sig, mask, code, type, val)
 		bcopy((caddr_t)&p->p_md.md_regs[F0], (caddr_t)ksc.sc_fpregs,
 			sizeof(ksc.sc_fpregs));
 	}
+
+	if (psp->ps_siginfo & sigmask(sig)) {
+		siginfo_t si;
+
+		initsiginfo(&si, sig, code, type, val);
+		if (copyout((caddr_t)&si, (caddr_t)&fp->sf_si, sizeof si))
+			goto bail;
+	}
+
 	if (copyout((caddr_t)&ksc, (caddr_t)&fp->sf_sc, sizeof(ksc))) {
+bail:
 		/*
 		 * Process has trashed its stack; give it an illegal
 		 * instruction to halt it in its tracks.
@@ -1022,7 +1035,7 @@ sendsig(catcher, sig, mask, code, type, val)
 	 * Build the argument list for the signal handler.
 	 */
 	regs[A0] = sig;
-	regs[A1] = code;
+	regs[A1] = (psp->ps_siginfo & sigmask(sig)) ? (int)&fp->sf_si : NULL;
 	regs[A2] = (int)&fp->sf_sc;
 	regs[A3] = (int)catcher;
 
diff --git a/sys/arch/sparc/sparc/locore.s b/sys/arch/sparc/sparc/locore.s
index be852c9725e..54791a51b42 100644
--- a/sys/arch/sparc/sparc/locore.s
+++ b/sys/arch/sparc/sparc/locore.s
@@ -3711,7 +3711,7 @@ noplab:	 nop
  * When this code is run, the stack looks like:
  *	[%sp]		64 bytes to which registers can be dumped
  *	[%sp + 64]	signal number (goes in %o0)
- *	[%sp + 64 + 4]	signal code (goes in %o1)
+ *	[%sp + 64 + 4]	siginfo_t pointer (goes in %o1)
  *	[%sp + 64 + 8]	placeholder
  *	[%sp + 64 + 12]	argument for %o3, currently unsupported (always 0)
  *	[%sp + 64 + 16]	first word of saved state (sigcontext)
diff --git a/sys/arch/sparc/sparc/machdep.c b/sys/arch/sparc/sparc/machdep.c
index 9aa15c27dec..f0054117fd9 100644
--- a/sys/arch/sparc/sparc/machdep.c
+++ b/sys/arch/sparc/sparc/machdep.c
@@ -420,16 +420,13 @@ int sigpid = 0;
 
 struct sigframe {
 	int	sf_signo;		/* signal number */
-	int	sf_code;		/* code */
+	siginfo_t *sf_sip;		/* points to siginfo_t */
 #ifdef COMPAT_SUNOS
 	struct	sigcontext *sf_scp;	/* points to user addr of sigcontext */
 #else
 	int	sf_xxx;			/* placeholder */
 #endif
-	union {
-		caddr_t	sfu_addr;	/* SunOS compat */
-		siginfo_t *sfu_sip;	/* native */
-	} sf_u;
+	caddr_t	sf_addr;		/* SunOS compat */
 	struct	sigcontext sf_sc;	/* actual sigcontext */
 	siginfo_t sf_si;
 };
@@ -509,12 +506,12 @@ sendsig(catcher, sig, mask, code, type, val)
 	 * directly in user space....
 	 */
 	sf.sf_signo = sig;
-	sf.sf_code = code;
-	sf.sf_u.sfu_sip = NULL;
+	sf.sf_sip = NULL;
 #ifdef COMPAT_SUNOS
 	if (p->p_emul == &emul_sunos) {
+		sf.sf_sip = (void *)code;	/* SunOS has "int code" */
 		sf.sf_scp = &fp->sf_sc;
-		sf.sf_u.sfu_addr = val.sival_ptr;
+		sf.sf_addr = val.sival_ptr;
 	}
 #endif
 
@@ -531,7 +528,7 @@ sendsig(catcher, sig, mask, code, type, val)
 	sf.sf_sc.sc_o0 = tf->tf_out[0];
 
 	if (psp->ps_siginfo & sigmask(sig)) {
-		sf.sf_u.sfu_sip = &fp->sf_si;
+		sf.sf_sip = &fp->sf_si;
 		initsiginfo(&sf.sf_si, sig, code, type, val);
 	}
 
-- 
2.20.1