X-Git-Url: https://git.saurik.com/apple/libc.git/blobdiff_plain/5b2abdfbf4211b6592cdd02b9507555a0ecbb04b..3d9156a7a519a5e3aa1b92e9d9d4b991f1aed7ff:/sys/sigtramp.c

diff --git a/sys/sigtramp.c b/sys/sigtramp.c
index 0ab0ece..b387329 100644
--- a/sys/sigtramp.c
+++ b/sys/sigtramp.c
@@ -3,19 +3,20 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -23,9 +24,10 @@
  * Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved
  */
 #import	"sigcatch.h"
+#import	<sys/types.h>
 #import	<signal.h>
-#import	<sys/signal.h>
 #import	<ucontext.h>
+#import	<mach/thread_status.h>
 
 /*
  * sigvec registers _sigtramp as the handler for any signal requiring
@@ -38,27 +40,183 @@
 int __in_sigtramp = 0;
 #endif
 
+/* These defn should match the kernel one */
+#define UC_TRAD			1
+#if defined(__ppc__) || defined(__ppc64__)
+#define UC_TRAD64		20
+#define UC_TRAD64_VEC		25
+#define UC_FLAVOR		30
+#define UC_FLAVOR_VEC		35
+#define UC_FLAVOR64		40
+#define UC_FLAVOR64_VEC		45
+#define UC_DUAL			50
+#define UC_DUAL_VEC		55
+
+ /* The following are valid mcontext sizes */
+#define UC_FLAVOR_SIZE ((PPC_THREAD_STATE_COUNT + PPC_EXCEPTION_STATE_COUNT + PPC_FLOAT_STATE_COUNT) * sizeof(int))
+
+#define UC_FLAVOR_VEC_SIZE ((PPC_THREAD_STATE_COUNT + PPC_EXCEPTION_STATE_COUNT + PPC_FLOAT_STATE_COUNT + PPC_VECTOR_STATE_COUNT) * sizeof(int))
+
+#define UC_FLAVOR64_SIZE ((PPC_THREAD_STATE64_COUNT + PPC_EXCEPTION_STATE64_COUNT + PPC_FLOAT_STATE_COUNT) * sizeof(int))
+
+#define UC_FLAVOR64_VEC_SIZE ((PPC_THREAD_STATE64_COUNT + PPC_EXCEPTION_STATE64_COUNT + PPC_FLOAT_STATE_COUNT + PPC_VECTOR_STATE_COUNT) * sizeof(int))
+#endif
+
+#if defined(__ppc__) || defined(__ppc64__)
+/* This routine will be replaced by an assembly soon */
+static  int
+restore64_state(mcontext_t mctx, mcontext64_t mctx64, int sigstyle)
+{
+	if (mctx->ss.srr0 != (unsigned int)mctx64->ss.srr0)
+		return(0);	
+	if (mctx->ss.srr1 != (unsigned int)mctx64->ss.srr1)
+		return(0);	
+	if (mctx->ss.r0 != (unsigned int)mctx64->ss.r0)
+		return(0);	
+	if (mctx->ss.r1 != (unsigned int)mctx->ss.r1)
+		return(0);	
+	if (mctx->ss.r2 != (unsigned int)mctx->ss.r2)
+		return(0);	
+	if (mctx->ss.r3 != (unsigned int)mctx->ss.r3)
+		return(0);	
+	if (mctx->ss.r4 != (unsigned int)mctx->ss.r4)
+		return(0);	
+	if (mctx->ss.r5 != (unsigned int)mctx->ss.r5)
+		return(0);	
+	if (mctx->ss.r6 != (unsigned int)mctx->ss.r6)
+		return(0);	
+	if (mctx->ss.r7 != (unsigned int)mctx->ss.r7)
+		return(0);	
+	if (mctx->ss.r8 != (unsigned int)mctx->ss.r8)
+		return(0);	
+	if (mctx->ss.r9 != (unsigned int)mctx->ss.r9)
+		return(0);	
+	if (mctx->ss.r10 != (unsigned int)mctx->ss.r10)
+		return(0);	
+	if (mctx->ss.r11 != (unsigned int)mctx->ss.r11)
+		return(0);	
+	if (mctx->ss.r12 != (unsigned int)mctx->ss.r12)
+		return(0);	
+	if (mctx->ss.r13 != (unsigned int)mctx->ss.r13)
+		return(0);	
+	if (mctx->ss.r14 != (unsigned int)mctx->ss.r14)
+		return(0);	
+	if (mctx->ss.r15 != (unsigned int)mctx->ss.r15)
+		return(0);	
+	if (mctx->ss.r16 != (unsigned int)mctx->ss.r16)
+		return(0);	
+	if (mctx->ss.r17 != (unsigned int)mctx->ss.r17)
+		return(0);	
+	if (mctx->ss.r18 != (unsigned int)mctx->ss.r18)
+		return(0);	
+	if (mctx->ss.r19 != (unsigned int)mctx->ss.r19)
+		return(0);	
+	if (mctx->ss.r20 != (unsigned int)mctx->ss.r20)
+		return(0);	
+	if (mctx->ss.r21 != (unsigned int)mctx->ss.r21)
+		return(0);	
+	if (mctx->ss.r22 != (unsigned int)mctx64->ss.r22)
+		return(0);	
+	if (mctx->ss.r23 != (unsigned int)mctx64->ss.r23)
+		return(0);	
+	if (mctx->ss.r24 != (unsigned int)mctx64->ss.r24)
+		return(0);	
+	if (mctx->ss.r25 != (unsigned int)mctx64->ss.r25)
+		return(0);	
+	if (mctx->ss.r26 != (unsigned int)mctx64->ss.r26)
+		return(0);	
+	if (mctx->ss.r27 != (unsigned int)mctx64->ss.r27)
+		return(0);	
+	if (mctx->ss.r28 != (unsigned int)mctx64->ss.r28)
+		return(0);	
+	if (mctx->ss.r29 != (unsigned int)mctx64->ss.r29)
+		return(0);	
+	if (mctx->ss.r30 != (unsigned int)mctx64->ss.r30)
+		return(0);	
+	if (mctx->ss.r31 != (unsigned int)mctx64->ss.r31)
+		return(0);	
+
+	if (mctx->ss.cr != mctx64->ss.cr)
+		return(0);	
+	if (mctx->ss.xer != (unsigned int)mctx64->ss.xer)
+		return(0);	
+	if (mctx->ss.lr != (unsigned int)mctx64->ss.lr)
+		return(0);	
+	if (mctx->ss.ctr != (unsigned int)mctx64->ss.ctr)
+		return(0);	
+
+	if (bcmp(&mctx->fs, &mctx64->ss, (PPC_FLOAT_STATE_COUNT * sizeof(int))))
+		return(0);
+	if ((sigstyle == UC_DUAL_VEC) && bcmp(&mctx->vs, &mctx64->vs, (PPC_VECTOR_STATE_COUNT * sizeof(int))))
+		return(0);
+		
+	return(1);
+
+}
+
+#endif 
+
 void
 _sigtramp(
 	union __sigaction_u __sigaction_u,
 	int 			sigstyle,
 	int 			sig,
 	siginfo_t		*sinfo,
-	struct ucontext		*uctx
+	ucontext_t		*uctx
 ) {
+#if defined(__ppc__) || defined(__ppc64__)
+	int ctxstyle = UC_FLAVOR;
+#endif
+	mcontext_t mctx;
+	mcontext64_t mctx64;
 
 #if defined(__DYNAMIC__)
         __in_sigtramp++;
 #endif
-	if (sigstyle == 1)
+#ifdef __i386__
+	if (sigstyle == UC_TRAD)
         	sa_handler(sig);
-#ifdef __ppc__
+#elif defined(__ppc__) || defined(__ppc64__)
+	if ((sigstyle == UC_TRAD) || (sigstyle == UC_TRAD64) || (sigstyle == UC_TRAD64_VEC))
+        	sa_handler(sig);
+
 	else
         	sa_sigaction(sig, sinfo, uctx);
-#endif /* __ppc__ */
 		
+	 if ((sigstyle == UC_DUAL) || (sigstyle == UC_DUAL_VEC)) {
+		mctx = uctx->uc_mcontext;
+		mctx64 = (mcontext64_t)((char *)(uctx->uc_mcontext) + sizeof(struct mcontext));
+		/* restore 64bit state ? */
+		if (restore64_state(mctx, mctx64, sigstyle)) {
+			uctx->uc_mcontext = (void *)mctx64;
+			if (sigstyle == UC_DUAL)  {
+				uctx->uc_mcsize = UC_FLAVOR64_SIZE;
+				ctxstyle = UC_FLAVOR64;
+			 } else {
+				uctx->uc_mcsize = UC_FLAVOR64_VEC_SIZE;
+				ctxstyle = UC_FLAVOR64_VEC;
+			}
+		} else {
+			if (sigstyle == UC_DUAL) 
+				ctxstyle = UC_FLAVOR;
+			 else
+				ctxstyle = UC_FLAVOR_VEC;
+		}
+	} else
+		ctxstyle = sigstyle;
+#endif /* __ppc__ || __ppc64__ */
+
 #if defined(__DYNAMIC__)
         __in_sigtramp--;
 #endif
-        sigreturn(uctx);
+#if defined(__ppc__) || defined(__ppc64__)
+	{
+        /* sigreturn(uctx, ctxstyle); */
+	/* syscall (SYS_SIGRETURN, uctx, ctxstyle); */
+	syscall (184, uctx, ctxstyle);
+	}
+#else
+	sigreturn(uctx);
+#endif /* __ppc__ || __ppc64__ */
 }
+