Add CFI information for MIPS assembly sources.

5 files changed, 69 insertions, 9 deletions

diff --git a/ports/sysdeps/mips/include/sys/asm.h b/ports/sysdeps/mips/include/sys/asm.h
new file mode 100644
index 0000000000..7b356e12e0
--- /dev/null
+++ b/ports/sysdeps/mips/include/sys/asm.h
@@ -0,0 +1,53 @@
+/* Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_ASM_H
+
+# include_next <sys/asm.h>
+
+# undef __mips_cfi_startproc
+# define __mips_cfi_startproc cfi_startproc
+# undef __mips_cfi_endproc
+# define __mips_cfi_endproc cfi_endproc
+
+# if _MIPS_SIM == _ABIO32
+#  define SETUP_GP64_REG_CFI(a)
+#  define SETUP_GP64_REG(a, b)
+#  define SETUP_GP64_STACK_CFI(a)
+#  define SETUP_GP64_STACK(a, b)
+#  define RESTORE_GP64_REG
+#  define RESTORE_GP64_STACK
+# else
+#  define SETUP_GP64_REG_CFI(gpsavereg)		\
+	cfi_register (gp, gpsavereg)
+#  define SETUP_GP64_REG(gpsavereg, proc)	\
+	SETUP_GP64 (gpsavereg, proc);		\
+	SETUP_GP64_REG_CFI (gpsavereg)
+#  define SETUP_GP64_STACK_CFI(gpoffset)	\
+	cfi_rel_offset (gp, gpoffset)
+#  define SETUP_GP64_STACK(gpoffset, proc)	\
+	SETUP_GP64 (gpoffset, proc);		\
+	SETUP_GP64_STACK_CFI (gpoffset)
+#  define RESTORE_GP64_REG			\
+	RESTORE_GP64;				\
+	cfi_restore (gp)
+#  define RESTORE_GP64_STACK			\
+	RESTORE_GP64;				\
+	cfi_restore (gp)
+# endif
+
+#endif
diff --git a/ports/sysdeps/mips/mips64/bsd-_setjmp.S b/ports/sysdeps/mips/mips64/bsd-_setjmp.S
index 83b1264925..5d0f76c13c 100644
--- a/ports/sysdeps/mips/mips64/bsd-_setjmp.S
+++ b/ports/sysdeps/mips/mips64/bsd-_setjmp.S
@@ -31,12 +31,12 @@ ENTRY (_setjmp)
 #ifdef __PIC__
 	SETUP_GP
 #endif
-	SETUP_GP64 (v0, C_SYMBOL_NAME (_setjmp))
+	SETUP_GP64_REG (v0, C_SYMBOL_NAME (_setjmp))
 	PTR_LA t9, C_SYMBOL_NAME (__sigsetjmp)
 #if _MIPS_SIM == _ABIO32
 	nop
 #endif	
-	RESTORE_GP64
+	RESTORE_GP64_REG
 	move	a1, zero		/* Pass a second argument of zero.  */
 #ifdef __PIC__
 	jr	t9
diff --git a/ports/sysdeps/mips/mips64/bsd-setjmp.S b/ports/sysdeps/mips/mips64/bsd-setjmp.S
index 15af26a82d..784e16e33f 100644
--- a/ports/sysdeps/mips/mips64/bsd-setjmp.S
+++ b/ports/sysdeps/mips/mips64/bsd-setjmp.S
@@ -31,12 +31,12 @@ ENTRY (setjmp)
 #ifdef __PIC__
 	SETUP_GP
 #endif
-	SETUP_GP64 (v0, C_SYMBOL_NAME (setjmp))
+	SETUP_GP64_REG (v0, C_SYMBOL_NAME (setjmp))
 	PTR_LA t9, C_SYMBOL_NAME (__sigsetjmp)
 #if _MIPS_SIM == _ABIO32
 	nop
 #endif	
-	RESTORE_GP64
+	RESTORE_GP64_REG
 	dli a1, 1		/* Pass a second argument of one.  */
 #ifdef __PIC__
 	jr	t9
diff --git a/ports/sysdeps/mips/mips64/setjmp.S b/ports/sysdeps/mips/mips64/setjmp.S
index 621e390fd0..5afbbe7562 100644
--- a/ports/sysdeps/mips/mips64/setjmp.S
+++ b/ports/sysdeps/mips/mips64/setjmp.S
@@ -29,14 +29,14 @@ ENTRY (__sigsetjmp)
 #ifdef __PIC__
 	SETUP_GP
 #endif
-	SETUP_GP64 (v0, C_SYMBOL_NAME (__sigsetjmp))
+	SETUP_GP64_REG (v0, C_SYMBOL_NAME (__sigsetjmp))
 	move a2, sp
 	move a3, fp
 	PTR_LA t9, __sigsetjmp_aux
 #if _MIPS_SIM == _ABIO32
 	nop
 #endif	
-	RESTORE_GP64
+	RESTORE_GP64_REG
 #if _MIPS_SIM != _ABIO32
 	move a4, gp
 #endif
diff --git a/ports/sysdeps/mips/sys/asm.h b/ports/sysdeps/mips/sys/asm.h
index 605451a884..293cf364e0 100644
--- a/ports/sysdeps/mips/sys/asm.h
+++ b/ports/sysdeps/mips/sys/asm.h
@@ -26,6 +26,10 @@
 # define CAT(str1,str2) __CAT(str1,str2)
 #endif
 
+/* Redefined as nonempty in the internal header.  */
+#define __mips_cfi_startproc /* Empty.  */
+#define __mips_cfi_endproc /* Empty.  */
+
 /*
  * Macros to handle different pointer/register sizes for 32/64-bit code
  *
@@ -147,7 +151,8 @@ l:							\
 		.align	2;                              \
 		.type	symbol,@function;               \
 		.ent	symbol,0;                       \
-symbol:		.frame	sp,0,ra
+symbol:		.frame	sp,0,ra;			\
+		__mips_cfi_startproc
 
 /*
  * NESTED - declare nested routine entry point
@@ -157,13 +162,15 @@ symbol:		.frame	sp,0,ra
 		.align	2;                              \
 		.type	symbol,@function;               \
 		.ent	symbol,0;                       \
-symbol:		.frame	sp, framesize, rpc
+symbol:		.frame	sp, framesize, rpc;		\
+		__mips_cfi_startproc
 
 /*
  * END - mark end of function
  */
 #ifndef END
 # define END(function)                                   \
+		__mips_cfi_endproc;			\
 		.end	function;		        \
 		.size	function,.-function
 #endif
@@ -173,7 +180,7 @@ symbol:		.frame	sp, framesize, rpc
  */
 #define	EXPORT(symbol)                                  \
 		.globl	symbol;                         \
-symbol:
+symbol:		__mips_cfi_startproc
 
 /*
  * ABS - export absolute symbol