Add CFI information for MIPS assembly sources.

20 files changed, 191 insertions, 34 deletions

diff --git a/ports/ChangeLog.mips b/ports/ChangeLog.mips
index c00275d243..3dcac85d9a 100644
--- a/ports/ChangeLog.mips
+++ b/ports/ChangeLog.mips
@@ -1,3 +1,48 @@
+2013-02-11  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/mips/include/sys/asm.h: New file.
+	* sysdeps/mips/mips64/bsd-_setjmp.S (_setjmp): Use SETUP_GP64_REG
+	and RESTORE_GP64_REG.
+	* sysdeps/mips/mips64/bsd-setjmp.S (setjmp): Likewise.
+	* sysdeps/mips/mips64/setjmp.S (__sigsetjmp): Likewise.
+	* sysdeps/mips/sys/asm.h (__mips_cfi_startproc): Define to empty.
+	(__mips_cfi_endproc): Likewise.
+	(LEAF): Use __mips_cfi_startproc.
+	(NESTED): Likewise.
+	(END): Use __mips_cfi_endproc.
+	(EXPORT): Use __mips_cfi_startproc.
+	* sysdeps/unix/mips/mips32/sysdep.h (PSEUDO): Add CFI information
+	for error-handling code in both definitions.
+	* sysdeps/unix/mips/mips64/n32/sysdep.h (PSEUDO): Likewise.
+	* sysdeps/unix/mips/mips64/n64/sysdep.h (PSEUDO): Likewise.
+	* sysdeps/unix/mips/sysdep.h (ENTRY): Use cfi_startproc.
+	(END): Use cfi_endproc.
+	(PSEUDO_END): Likewise.
+	(PSEUDO_END_NOERRNO): Likewise.
+	(PSEUDO_END_ERRVAL): Likewise.
+	* sysdeps/unix/sysv/linux/mips/clone.S (__clone): Add CFI
+	information.  Use SETUP_GP64_STACK and RESTORE_GP64_STACK.
+	* sysdeps/unix/sysv/linux/mips/getcontext.S (__getcontext):
+	Likewise.
+	* sysdeps/unix/sysv/linux/mips/makecontext.S (__makecontext):
+	Likewise.
+	* sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl): Use
+	SETUP_GP64_REG and RESTORE_GP64_REG.
+	* sysdeps/unix/sysv/linux/mips/mips64/nptl/sysdep-cancel.h
+	[(!NOT_IN_libc || IS_IN_libpthread || IS_IN_librt) && __PIC__]
+	(PSEUDO): Use cfi_endproc before ENTRY.
+	* sysdeps/unix/sysv/linux/mips/mips64/syscall.S (syscall): Add CFI
+	information.  Use SETUP_GP64_REG and RESTORE_GP64_REG.
+	* sysdeps/unix/sysv/linux/mips/nptl/sysdep-cancel.h [(!NOT_IN_libc
+	|| IS_IN_libpthread || IS_IN_librt) && __PIC__] (PSEUDO): Use
+	cfi_endproc before ENTRY.
+	* sysdeps/unix/sysv/linux/mips/setcontext.S (__setcontext): Add
+	CFI information.  Use SETUP_GP64_STACK and RESTORE_GP64_STACK.
+	* sysdeps/unix/sysv/linux/mips/swapcontext.S (__swapcontext):
+	Likewise.
+	* sysdeps/unix/sysv/linux/mips/vfork.S (__vfork): Add CFI
+	information.  Use SETUP_GP64_REG and RESTORE_GP64_REG.
+
 2013-02-08  Joseph Myers  <joseph@codesourcery.com>
 
 	[BZ #13550]
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
diff --git a/ports/sysdeps/unix/mips/mips32/sysdep.h b/ports/sysdeps/unix/mips/mips32/sysdep.h
index d7d389253d..5c5d7695d0 100644
--- a/ports/sysdeps/unix/mips/mips32/sysdep.h
+++ b/ports/sysdeps/unix/mips/mips32/sysdep.h
@@ -24,8 +24,10 @@
 #ifdef __PIC__
 #define PSEUDO(name, syscall_name, args) \
   .align 2;								      \
+  cfi_startproc;							      \
   99: la t9,__syscall_error;						      \
   jr t9;								      \
+  cfi_endproc;								      \
   ENTRY(name)								      \
   .set noreorder;							      \
   .cpload t9;								      \
@@ -38,8 +40,10 @@ L(syse1):
 #define PSEUDO(name, syscall_name, args) \
   .set noreorder;							      \
   .align 2;								      \
+  cfi_startproc;							      \
   99: j __syscall_error;						      \
   nop;									      \
+  cfi_endproc;								      \
   ENTRY(name)								      \
   .set noreorder;							      \
   li v0, SYS_ify(syscall_name);						      \
diff --git a/ports/sysdeps/unix/mips/mips64/n32/sysdep.h b/ports/sysdeps/unix/mips/mips64/n32/sysdep.h
index 37a67a2e69..49ae76991e 100644
--- a/ports/sysdeps/unix/mips/mips64/n32/sysdep.h
+++ b/ports/sysdeps/unix/mips/mips64/n32/sysdep.h
@@ -26,13 +26,17 @@
 #ifdef __PIC__
 #define PSEUDO(name, syscall_name, args) \
   .align 2;								      \
+  cfi_startproc;							      \
   99:;									      \
   .set noat;								      \
   .cpsetup t9, $1, name;						      \
+  cfi_register (gp, $1);						      \
   .set at;								      \
   la t9,__syscall_error;						      \
   .cpreturn;								      \
+  cfi_restore (gp);							      \
   jr t9;								      \
+  cfi_endproc;								      \
   ENTRY(name)								      \
   li v0, SYS_ify(syscall_name);						      \
   syscall;								      \
@@ -42,8 +46,10 @@ L(syse1):
 #define PSEUDO(name, syscall_name, args) \
   .set noreorder;							      \
   .align 2;								      \
+  cfi_startproc;							      \
   99: j __syscall_error;						      \
   nop;                                                                        \
+  cfi_endproc;								      \
   ENTRY(name)								      \
   .set noreorder;							      \
   li v0, SYS_ify(syscall_name);						      \
diff --git a/ports/sysdeps/unix/mips/mips64/n64/sysdep.h b/ports/sysdeps/unix/mips/mips64/n64/sysdep.h
index 871184bd0f..2670c68b7d 100644
--- a/ports/sysdeps/unix/mips/mips64/n64/sysdep.h
+++ b/ports/sysdeps/unix/mips/mips64/n64/sysdep.h
@@ -26,13 +26,17 @@
 #ifdef __PIC__
 #define PSEUDO(name, syscall_name, args) \
   .align 2;								      \
+  cfi_startproc;							      \
   99:;									      \
   .set noat;								      \
   .cpsetup t9, $1, name;						      \
+  cfi_register (gp, $1);						      \
   .set at;								      \
   dla t9,__syscall_error;						      \
   .cpreturn;								      \
+  cfi_restore (gp);							      \
   jr t9;								      \
+  cfi_endproc;								      \
   ENTRY(name)								      \
   li v0, SYS_ify(syscall_name);						      \
   syscall;								      \
@@ -42,8 +46,10 @@ L(syse1):
 #define PSEUDO(name, syscall_name, args) \
   .set noreorder;							      \
   .align 2;								      \
+  cfi_startproc;							      \
   99: j __syscall_error;						      \
   nop;                                                                        \
+  cfi_endproc;								      \
   ENTRY(name)								      \
   .set noreorder;							      \
   li v0, SYS_ify(syscall_name);						      \
diff --git a/ports/sysdeps/unix/mips/sysdep.h b/ports/sysdeps/unix/mips/sysdep.h
index bab3bc04c9..ef5c0893f3 100644
--- a/ports/sysdeps/unix/mips/sysdep.h
+++ b/ports/sysdeps/unix/mips/sysdep.h
@@ -27,17 +27,19 @@
   .globl name;								      \
   .align 2;								      \
   .ent name,0;								      \
-  name##:
+  name##:								      \
+  cfi_startproc;
 
 #undef END
 #define	END(function)                                   \
+		cfi_endproc;				\
 		.end	function;		        \
 		.size	function,.-function
 
 #define ret	j ra ; nop
 
 #undef PSEUDO_END
-#define PSEUDO_END(sym) .end sym; .size sym,.-sym
+#define PSEUDO_END(sym) cfi_endproc; .end sym; .size sym,.-sym
 
 #define PSEUDO_NOERRNO(name, syscall_name, args)	\
   .align 2;						\
@@ -47,7 +49,7 @@
   syscall
 
 #undef PSEUDO_END_NOERRNO
-#define PSEUDO_END_NOERRNO(sym) .end sym; .size sym,.-sym
+#define PSEUDO_END_NOERRNO(sym) cfi_endproc; .end sym; .size sym,.-sym
 
 #define ret_NOERRNO ret
 
@@ -59,7 +61,7 @@
   syscall
 
 #undef PSEUDO_END_ERRVAL
-#define PSEUDO_END_ERRVAL(sym) .end sym; .size sym,.-sym
+#define PSEUDO_END_ERRVAL(sym) cfi_endproc; .end sym; .size sym,.-sym
 
 #define ret_ERRVAL ret
 
diff --git a/ports/sysdeps/unix/sysv/linux/mips/clone.S b/ports/sysdeps/unix/sysv/linux/mips/clone.S
index 72360f9621..ef801882a9 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/clone.S
+++ b/ports/sysdeps/unix/sysv/linux/mips/clone.S
@@ -47,7 +47,8 @@ NESTED(__clone,4*SZREG,sp)
 	SETUP_GP
 #endif
 	PTR_SUBU sp, FRAMESZ
-	SETUP_GP64 (GPOFF, __clone)
+	cfi_adjust_cfa_offset (FRAMESZ)
+	SETUP_GP64_STACK (GPOFF, __clone)
 #ifdef __PIC__
 	SAVE_GP (GPOFF)
 #endif
@@ -88,26 +89,35 @@ NESTED(__clone,4*SZREG,sp)
 
 	/* Do the system call */
 	li		v0,__NR_clone
+	cfi_endproc
 	syscall
 
 	bnez		a3,L(error)
 	beqz		v0,L(thread_start)
 
 	/* Successful return from the parent */
-	RESTORE_GP64
+	cfi_startproc
+	cfi_adjust_cfa_offset (FRAMESZ)
+	SETUP_GP64_STACK_CFI (GPOFF)
+	cfi_remember_state
+	RESTORE_GP64_STACK
 	PTR_ADDU	sp, FRAMESZ
+	cfi_adjust_cfa_offset (-FRAMESZ)
 	ret
 
 	/* Something bad happened -- no child created */
 L(error):
+	cfi_restore_state
 #ifdef __PIC__
 	PTR_LA		t9,__syscall_error
-	RESTORE_GP64
+	RESTORE_GP64_STACK
 	PTR_ADDU	sp, FRAMESZ
+	cfi_adjust_cfa_offset (-FRAMESZ)
 	jr		t9
 #else
-	RESTORE_GP64
+	RESTORE_GP64_STACK
 	PTR_ADDU	sp, FRAMESZ
+	cfi_adjust_cfa_offset (-FRAMESZ)
 	j		__syscall_error
 #endif
 	END(__clone)
@@ -118,6 +128,7 @@ L(error):
 
 ENTRY(__thread_start)
 L(thread_start):
+	cfi_undefined ($31)
 	/* cp is already loaded.  */
 	SAVE_GP (GPOFF)
 	/* The stackframe has been created on entry of clone().  */
diff --git a/ports/sysdeps/unix/sysv/linux/mips/getcontext.S b/ports/sysdeps/unix/sysv/linux/mips/getcontext.S
index 0e3d35b54f..7af6825a4a 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/getcontext.S
+++ b/ports/sysdeps/unix/sysv/linux/mips/getcontext.S
@@ -54,7 +54,8 @@ NESTED (__getcontext, FRAMESZ, ra)
 # endif
 
 	PTR_ADDIU sp, -FRAMESZ
-	SETUP_GP64 (GPOFF, __getcontext)
+	cfi_adjust_cfa_offset (FRAMESZ)
+	SETUP_GP64_STACK (GPOFF, __getcontext)
 	SAVE_GP (GPOFF)
 
 #else  /* ! __PIC__ */
@@ -124,19 +125,23 @@ NESTED (__getcontext, FRAMESZ, ra)
 	li	v0, SYS_ify (rt_sigprocmask)
 	syscall
 	bnez	a3, 99f
+	cfi_remember_state
 
 #ifdef __PIC__
-	RESTORE_GP64
+	RESTORE_GP64_STACK
 	PTR_ADDIU sp, FRAMESZ
+	cfi_adjust_cfa_offset (-FRAMESZ)
 #endif
 	move	v0, zero
 	jr	ra
 
 99:
+	cfi_restore_state
 #ifdef __PIC__
 	PTR_LA	t9, JUMPTARGET (__syscall_error)
-	RESTORE_GP64
+	RESTORE_GP64_STACK
 	PTR_ADDIU sp, FRAMESZ
+	cfi_adjust_cfa_offset (-FRAMESZ)
 	jr	t9
 
 #else  /* ! __PIC__ */
diff --git a/ports/sysdeps/unix/sysv/linux/mips/makecontext.S b/ports/sysdeps/unix/sysv/linux/mips/makecontext.S
index 65f1a6aaa2..d89db01677 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/makecontext.S
+++ b/ports/sysdeps/unix/sysv/linux/mips/makecontext.S
@@ -63,9 +63,10 @@ NESTED (__makecontext, FRAMESZ, ra)
 #endif
 
 	PTR_ADDIU sp, -FRAMESZ
+	cfi_adjust_cfa_offset (FRAMESZ)
 
 #ifdef __PIC__
-	SETUP_GP64 (GPOFF, __makecontext)
+	SETUP_GP64_STACK (GPOFF, __makecontext)
 	SAVE_GP (GPOFF)
 #endif
 
@@ -145,8 +146,9 @@ NESTED (__makecontext, FRAMESZ, ra)
 	REG_S	a1, MCONTEXT_PC(a0)
 
 #ifdef __PIC__
-	RESTORE_GP64
+	RESTORE_GP64_STACK
 	PTR_ADDIU sp, FRAMESZ
+	cfi_adjust_cfa_offset (-FRAMESZ)
 #endif
 	jr	ra
 
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S
index b3bed4663c..c5f1c350ed 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S
@@ -31,9 +31,9 @@ ENTRY (__ioctl)
 	ret
 
 L(error):
-	SETUP_GP64 (a0, __ioctl)
+	SETUP_GP64_REG (a0, __ioctl)
 	PTR_LA t9, __syscall_error
-	RESTORE_GP64
+	RESTORE_GP64_REG
 	jr t9
 
 PSEUDO_END (__ioctl)
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/nptl/sysdep-cancel.h b/ports/sysdeps/unix/sysv/linux/mips/mips64/nptl/sysdep-cancel.h
index 354eba2f3d..6565225662 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips64/nptl/sysdep-cancel.h
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/nptl/sysdep-cancel.h
@@ -57,6 +57,7 @@
     cfi_same_value (gp);						      \
     RESTORESTK;								      \
     ret;								      \
+    cfi_endproc;							      \
   .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	      \
   ENTRY (name)								      \
     SAVESTK;								      \
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/syscall.S b/ports/sysdeps/unix/sysv/linux/mips/mips64/syscall.S
index 839276d7ad..850025c635 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips64/syscall.S
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/syscall.S
@@ -30,7 +30,9 @@ NESTED (syscall, SZREG, ra)
 	.mask 0x00010000, -SZREG
 	.fmask 0x00000000, 0
 	PTR_ADDIU sp, -SZREG
+	cfi_adjust_cfa_offset (SZREG)
 	REG_S s0, (sp)
+	cfi_rel_offset (s0, 0)
 
 	move s0, a0
 	move a0, a1		/* shift arg1 - arg7.  */
@@ -45,15 +47,17 @@ NESTED (syscall, SZREG, ra)
 	syscall			/* Do the system call.  */
 
 	REG_L s0, (sp)
+	cfi_restore (s0)
 	PTR_ADDIU sp, SZREG
+	cfi_adjust_cfa_offset (-SZREG)
 	bne a3, zero, L(error)
 
 	ret
 
 L(error):
-	SETUP_GP64 (a0, syscall)
+	SETUP_GP64_REG (a0, syscall)
 	PTR_LA t9, __syscall_error
-	RESTORE_GP64
+	RESTORE_GP64_REG
 	jr t9
 
 END (syscall)
diff --git a/ports/sysdeps/unix/sysv/linux/mips/nptl/sysdep-cancel.h b/ports/sysdeps/unix/sysv/linux/mips/nptl/sysdep-cancel.h
index e1dd672528..1e0bfedecf 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/nptl/sysdep-cancel.h
+++ b/ports/sysdeps/unix/sysv/linux/mips/nptl/sysdep-cancel.h
@@ -52,6 +52,7 @@
     .set reorder;							      \
     bne a3, zero, 99b;					       		      \
     ret;								      \
+    cfi_endproc;							      \
   .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	      \
   ENTRY (name)								      \
     .set noreorder;							      \
diff --git a/ports/sysdeps/unix/sysv/linux/mips/setcontext.S b/ports/sysdeps/unix/sysv/linux/mips/setcontext.S
index 42f709d846..6ed355c97f 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/setcontext.S
+++ b/ports/sysdeps/unix/sysv/linux/mips/setcontext.S
@@ -56,9 +56,10 @@ NESTED (__setcontext, FRAMESZ, ra)
 #endif
 
 	PTR_ADDIU sp, -FRAMESZ
+	cfi_adjust_cfa_offset (FRAMESZ)
 
 #ifdef __PIC__
-	SETUP_GP64 (GPOFF, __setcontext)
+	SETUP_GP64_STACK (GPOFF, __setcontext)
 	SAVE_GP (GPOFF)
 #endif
 
@@ -152,6 +153,7 @@ NESTED (__setcontext, FRAMESZ, ra)
 	   and call the signal return syscall as if a signal
 	   handler exited normally.  */
 	PTR_ADDIU sp, -((RT_SIGFRAME_SIZE + ALSZ) & ALMASK)
+	cfi_adjust_cfa_offset ((RT_SIGFRAME_SIZE + ALSZ) & ALMASK)
 
 	/* Only ucontext is referred to from rt_sigreturn,
 	   copy it.  */
@@ -175,11 +177,13 @@ NESTED (__setcontext, FRAMESZ, ra)
 	   path.  Successful rt_sigreturn never returns to
 	   its calling place.  */
 	PTR_ADDIU sp, ((RT_SIGFRAME_SIZE + ALSZ) & ALMASK)
+	cfi_adjust_cfa_offset (-((RT_SIGFRAME_SIZE + ALSZ) & ALMASK))
 99:
 #ifdef __PIC__
 	PTR_LA	t9, JUMPTARGET (__syscall_error)
-	RESTORE_GP64
+	RESTORE_GP64_STACK
 	PTR_ADDIU sp, FRAMESZ
+	cfi_adjust_cfa_offset (-FRAMESZ)
 	jr	t9
 
 #else  /* ! __PIC__ */
diff --git a/ports/sysdeps/unix/sysv/linux/mips/swapcontext.S b/ports/sysdeps/unix/sysv/linux/mips/swapcontext.S
index d965f3919b..ddd3b28fde 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/swapcontext.S
+++ b/ports/sysdeps/unix/sysv/linux/mips/swapcontext.S
@@ -63,7 +63,8 @@ NESTED (__swapcontext, FRAMESZ, ra)
 # endif
 
 	PTR_ADDIU sp, -FRAMESZ
-	SETUP_GP64 (GPOFF, __swapcontext)
+	cfi_adjust_cfa_offset (FRAMESZ)
+	SETUP_GP64_STACK (GPOFF, __swapcontext)
 	SAVE_GP (GPOFF)
 
 #else  /* ! __PIC__ */
@@ -198,8 +199,9 @@ NESTED (__swapcontext, FRAMESZ, ra)
 99:
 #ifdef __PIC__
 	PTR_LA	t9, JUMPTARGET (__syscall_error)
-	RESTORE_GP64
+	RESTORE_GP64_STACK
 	PTR_ADDIU sp, FRAMESZ
+	cfi_adjust_cfa_offset (-FRAMESZ)
 	jr	t9
 
 #else  /* ! __PIC__ */
diff --git a/ports/sysdeps/unix/sysv/linux/mips/vfork.S b/ports/sysdeps/unix/sysv/linux/mips/vfork.S
index b9503c3943..d627923528 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/vfork.S
+++ b/ports/sysdeps/unix/sysv/linux/mips/vfork.S
@@ -42,7 +42,8 @@ NESTED(__vfork,FRAMESZ,sp)
 	SETUP_GP
 #endif
 	PTR_SUBU sp, FRAMESZ
-	SETUP_GP64 (a5, __vfork)
+	cfi_adjust_cfa_offset (FRAMESZ)
+	SETUP_GP64_REG (a5, __vfork)
 #ifdef __PIC__
 	SAVE_GP (GPOFF)
 #endif
@@ -63,6 +64,7 @@ NESTED(__vfork,FRAMESZ,sp)
 #endif
 
 	PTR_ADDU	sp, FRAMESZ
+	cfi_adjust_cfa_offset (-FRAMESZ)
 
 	SAVE_PID
 
@@ -75,20 +77,22 @@ NESTED(__vfork,FRAMESZ,sp)
 
 	RESTORE_PID
 
+	cfi_remember_state
 	bnez		a3,L(error)
 
 	/* Successful return from the parent or child.  */
-	RESTORE_GP64
+	RESTORE_GP64_REG
 	ret
 
 	/* Something bad happened -- no child created.  */
 L(error):
+	cfi_restore_state
 #ifdef __PIC__
 	PTR_LA		t9, __syscall_error
-	RESTORE_GP64
+	RESTORE_GP64_REG
 	jr		t9
 #else
-	RESTORE_GP64
+	RESTORE_GP64_REG
 	j		__syscall_error
 #endif
 	END(__vfork)