7 files changed, 160 insertions, 1 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog
index b1cf375..155917f 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,13 @@
+2003-08-08  Andreas Schwab  <schwab@suse.de>
+
+	* config/tc-m68k.h (TARGET_USE_CFIPOP)
+	(DWARF2_DEFAULT_RETURN_COLUMN, DWARF2_CIE_DATA_ALIGNMENT)
+	(tc_regname_to_dw2regnum, tc_cfi_frame_initial_instructions):
+	Define.
+	* config/tc-m68k.c: Include "dw2gencfi.h".
+	(tc_m68k_regname_to_dw2regnum)
+	(tc_m68k_frame_initial_instructions): New functions.
+
 2003-08-08 Dmitry Diky <diwil@mail.ru>
 
 	* config/tc-msp430.c: Add xW42 and xE42 parts. Sort MPU list
diff --git a/gas/config/tc-m68k.c b/gas/config/tc-m68k.c
index d913dc6..2c213c6 100644
--- a/gas/config/tc-m68k.c
+++ b/gas/config/tc-m68k.c
@@ -1,6 +1,6 @@
 /* tc-m68k.c -- Assemble for the m68k family
    Copyright 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-   2000, 2001, 2002
+   2000, 2001, 2002, 2003
    Free Software Foundation, Inc.
 
    This file is part of GAS, the GNU Assembler.
@@ -25,6 +25,7 @@
 #include "obstack.h"
 #include "subsegs.h"
 #include "dwarf2dbg.h"
+#include "dw2gencfi.h"
 
 #include "opcode/m68k.h"
 #include "m68k-parse.h"
@@ -7146,3 +7147,34 @@ m68k_elf_final_processing ()
     elf_elfheader (stdoutput)->e_flags |= EF_M68000;
 }
 #endif
+
+int
+tc_m68k_regname_to_dw2regnum (const char *regname)
+{
+  unsigned int regnum;
+  static const char *const regnames[] =
+    {
+      "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
+      "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp",
+      "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7",
+      "pc"
+    };
+
+  for (regnum = 0; regnum < ARRAY_SIZE (regnames); regnum++)
+    if (strcmp (regname, regnames[regnum]) == 0)
+      return regnum;
+
+  return -1;
+}
+
+void
+tc_m68k_frame_initial_instructions (void)
+{
+  static int sp_regno = -1;
+
+  if (sp_regno < 0)
+    sp_regno = tc_m68k_regname_to_dw2regnum ("sp");
+
+  cfi_add_CFA_def_cfa (sp_regno, -DWARF2_CIE_DATA_ALIGNMENT);
+  cfi_add_CFA_offset (DWARF2_DEFAULT_RETURN_COLUMN, DWARF2_CIE_DATA_ALIGNMENT);
+}
diff --git a/gas/config/tc-m68k.h b/gas/config/tc-m68k.h
index 4770300..1182820 100644
--- a/gas/config/tc-m68k.h
+++ b/gas/config/tc-m68k.h
@@ -220,3 +220,15 @@ extern struct relax_type md_relax_table[];
   while (0)
 
 #define DWARF2_LINE_MIN_INSN_LENGTH 2
+
+/* We want .cfi_* pseudo-ops for generating unwind info.  */
+#define TARGET_USE_CFIPOP 1
+
+#define DWARF2_DEFAULT_RETURN_COLUMN 24
+#define DWARF2_CIE_DATA_ALIGNMENT (-4)
+
+#define tc_regname_to_dw2regnum tc_m68k_regname_to_dw2regnum
+extern int tc_m68k_regname_to_dw2regnum (const char *regname);
+
+#define tc_cfi_frame_initial_instructions tc_m68k_frame_initial_instructions
+extern void tc_m68k_frame_initial_instructions (void);
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 51a1239..f372e87 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2003-08-08  Andreas Schwab  <schwab@suse.de>
+
+	* gas/cfi/cfi-m68k.s, gas/cfi/cfi-m68k.d: New test.
+	* gas/cfi/cfi.exp (run_list_test): Run it.
+
 2003-08-06  Jason Eckhardt  <jle@rice.edu>
 
 	* gas/i860/dir-align01.{s,d}: New files.
diff --git a/gas/testsuite/gas/cfi/cfi-m68k.d b/gas/testsuite/gas/cfi/cfi-m68k.d
new file mode 100644
index 0000000..a728759
--- /dev/null
+++ b/gas/testsuite/gas/cfi/cfi-m68k.d
@@ -0,0 +1,33 @@
+#readelf: -wf
+#name: CFI on m68k
+The section .eh_frame contains:
+
+00000000 00000012 00000000 CIE
+  Version:               1
+  Augmentation:          "zR"
+  Code alignment factor: 2
+  Data alignment factor: -4
+  Return address column: 24
+  Augmentation data:     1b
+
+  DW_CFA_def_cfa: r15 ofs 4
+  DW_CFA_offset: r24 at cfa-4
+
+00000016 00000014 0000001a FDE cie=00000000 pc=0000001e..0000002a
+  DW_CFA_advance_loc: 4 to 00000022
+  DW_CFA_def_cfa_offset: 4664
+  DW_CFA_advance_loc: 6 to 00000028
+  DW_CFA_def_cfa_offset: 4
+
+0000002e 00000017 00000032 FDE cie=00000000 pc=00000036..00000042
+  DW_CFA_advance_loc: 4 to 0000003a
+  DW_CFA_def_cfa_offset: 8
+  DW_CFA_offset: r14 at cfa-8
+  DW_CFA_def_cfa_reg: r14
+  DW_CFA_advance_loc: 6 to 00000040
+  DW_CFA_def_cfa_reg: r15
+
+00000049 0000000f 0000004d FDE cie=00000000 pc=00000051..00000055
+
+  DW_CFA_nop
+  DW_CFA_nop
diff --git a/gas/testsuite/gas/cfi/cfi-m68k.s b/gas/testsuite/gas/cfi/cfi-m68k.s
new file mode 100644
index 0000000..6bf0cb2
--- /dev/null
+++ b/gas/testsuite/gas/cfi/cfi-m68k.s
@@ -0,0 +1,64 @@
+#; $ as -o test.o gas-cfi-test.s && gcc -nostdlib -o test test.o
+
+	.text
+
+#; func_locvars
+#; - function with a space on the stack 
+#;   allocated for local variables
+
+	.type	func_locvars,@function
+func_locvars:
+	.cfi_startproc
+	
+	#; alocate space for local vars
+	suba.w	#0x1234,%sp
+	.cfi_adjust_cfa_offset	0x1234
+	
+	#; dummy body
+	moveq.l	#1,%d0
+	
+	#; release space of local vars and return
+	adda.w	#0x1234,%sp
+	.cfi_adjust_cfa_offset	-0x1234
+	rts
+	.cfi_endproc
+
+#; func_prologue
+#; - functions that begins with standard
+#;   prologue: "link %a6,#0"
+
+	.type	func_prologue,@function
+func_prologue:
+	.cfi_startproc
+	
+	#; prologue, CFI is valid after 
+	#; each instruction.
+	link	%a6,#0
+	.cfi_def_cfa_offset	8
+	.cfi_offset		a6,-8
+	.cfi_def_cfa_register	a6
+
+	#; function body
+	jbsr	func_locvars
+	addq.l	#3, %d0
+
+	#; epilogue with valid CFI
+	#; (we're better than gcc :-)
+	unlk	%a6
+	.cfi_def_cfa_register	sp
+	rts
+	.cfi_endproc
+
+#; main
+#; - typical function
+	.type	main,@function
+main:
+	.cfi_startproc
+	
+	#; only function body that doesn't
+	#; touch the stack at all.
+	jbsr	func_prologue
+	
+	#; return
+	rts
+	.cfi_endproc
diff --git a/gas/testsuite/gas/cfi/cfi.exp b/gas/testsuite/gas/cfi/cfi.exp
index 8824c22..d1b1ca8 100644
--- a/gas/testsuite/gas/cfi/cfi.exp
+++ b/gas/testsuite/gas/cfi/cfi.exp
@@ -36,6 +36,9 @@ if [istarget "x86_64-*"] then {
 	run_dump_test "cfi-s390x-1"
     }
 
+} elseif { [istarget "m68*-*"] } then {
+    run_dump_test "cfi-m68k"
+
 } else {
     return
 }