Convert ss_sp in stack_t and sigstack to void *.

POSIX requires these members to be of type void * rather than the
char * inherited from 4BSD.  NetBSD and OpenBSD both changed their
fields to void * back in 1998.  No new build failures were reported
via an exp-run.

PR:		206503 (exp-run)
Reviewed by:	kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D5092

4 files changed, 7 insertions, 7 deletions

diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c
index 1bf735f..c07d09c 100644
--- a/sys/amd64/amd64/machdep.c
+++ b/sys/amd64/amd64/machdep.c
@@ -389,7 +389,7 @@ sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
 	/* Allocate space for the signal handler context. */
 	if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
 	    SIGISMEMBER(psp->ps_sigonstack, sig)) {
-		sp = td->td_sigstk.ss_sp + td->td_sigstk.ss_size;
+		sp = (char *)td->td_sigstk.ss_sp + td->td_sigstk.ss_size;
 #if defined(COMPAT_43)
 		td->td_sigstk.ss_flags |= SS_ONSTACK;
 #endif
diff --git a/sys/amd64/ia32/ia32_signal.c b/sys/amd64/ia32/ia32_signal.c
index 9831013..4947f01 100644
--- a/sys/amd64/ia32/ia32_signal.c
+++ b/sys/amd64/ia32/ia32_signal.c
@@ -354,7 +354,7 @@ ia32_osendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
 	/* Allocate space for the signal handler context. */
 	if ((td->td_pflags & TDP_ALTSTACK) && !oonstack &&
 	    SIGISMEMBER(psp->ps_sigonstack, sig)) {
-		fp = (struct ia32_sigframe3 *)(td->td_sigstk.ss_sp +
+		fp = (struct ia32_sigframe3 *)((uintptr_t)td->td_sigstk.ss_sp +
 		    td->td_sigstk.ss_size - sizeof(sf));
 		td->td_sigstk.ss_flags |= SS_ONSTACK;
 	} else
@@ -488,7 +488,7 @@ freebsd4_ia32_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
 	/* Allocate space for the signal handler context. */
 	if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
 	    SIGISMEMBER(psp->ps_sigonstack, sig)) {
-		sfp = (struct ia32_sigframe4 *)(td->td_sigstk.ss_sp +
+		sfp = (struct ia32_sigframe4 *)((uintptr_t)td->td_sigstk.ss_sp +
 		    td->td_sigstk.ss_size - sizeof(sf));
 	} else
 		sfp = (struct ia32_sigframe4 *)regs->tf_rsp - 1;
@@ -622,7 +622,7 @@ ia32_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
 	/* Allocate space for the signal handler context. */
 	if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
 	    SIGISMEMBER(psp->ps_sigonstack, sig))
-		sp = td->td_sigstk.ss_sp + td->td_sigstk.ss_size;
+		sp = (char *)td->td_sigstk.ss_sp + td->td_sigstk.ss_size;
 	else
 		sp = (char *)regs->tf_rsp;
 	if (xfpusave != NULL) {
diff --git a/sys/amd64/linux/linux_sysvec.c b/sys/amd64/linux/linux_sysvec.c
index 0bdcba0..6089a90 100644
--- a/sys/amd64/linux/linux_sysvec.c
+++ b/sys/amd64/linux/linux_sysvec.c
@@ -630,7 +630,7 @@ linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
 	/* Allocate space for the signal handler context. */
 	if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
 	    SIGISMEMBER(psp->ps_sigonstack, sig)) {
-		sp = td->td_sigstk.ss_sp + td->td_sigstk.ss_size -
+		sp = (caddr_t)td->td_sigstk.ss_sp + td->td_sigstk.ss_size -
 		    sizeof(struct l_rt_sigframe);
 	} else
 		sp = (caddr_t)regs->tf_rsp - sizeof(struct l_rt_sigframe) - 128;
diff --git a/sys/amd64/linux32/linux32_sysvec.c b/sys/amd64/linux32/linux32_sysvec.c
index f89b8fa..673ea4f 100644
--- a/sys/amd64/linux32/linux32_sysvec.c
+++ b/sys/amd64/linux32/linux32_sysvec.c
@@ -315,7 +315,7 @@ linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
 	 */
 	if ((td->td_pflags & TDP_ALTSTACK) && !oonstack &&
 	    SIGISMEMBER(psp->ps_sigonstack, sig)) {
-		fp = (struct l_rt_sigframe *)(td->td_sigstk.ss_sp +
+		fp = (struct l_rt_sigframe *)((uintptr_t)td->td_sigstk.ss_sp +
 		    td->td_sigstk.ss_size - sizeof(struct l_rt_sigframe));
 	} else
 		fp = (struct l_rt_sigframe *)regs->tf_rsp - 1;
@@ -460,7 +460,7 @@ linux_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
 	 */
 	if ((td->td_pflags & TDP_ALTSTACK) && !oonstack &&
 	    SIGISMEMBER(psp->ps_sigonstack, sig)) {
-		fp = (struct l_sigframe *)(td->td_sigstk.ss_sp +
+		fp = (struct l_sigframe *)((uintptr_t)td->td_sigstk.ss_sp +
 		    td->td_sigstk.ss_size - sizeof(struct l_sigframe));
 	} else
 		fp = (struct l_sigframe *)regs->tf_rsp - 1;