+1999-12-29 "Martin v. Loewis" <martin@loewis.home.cs.tu-berlin.de>
+
+ Restore i386 binary compatibility in Dwarf EH info.
+ * config/i386/i386.h (DWARF_FRAME_REGISTERS): Define as 17, the old
+ value of FIRST_PSEUDO_REGISTER.
+ * frame.h (DWARF_FRAME_REGISTERS): Default to FIRST_PSEUDO_REGISTER.
+ (struct frame_state): Use DWARF_FRAME_REGISTERS.
+ * dwarfout.c (output_reg_number): Ditto.
+ * dwarf2out.c (reg_number, expand_builtin_init_dwarf_reg_sizes): Ditto.
+ (DWARF_FRAME_RETURN_COLUMN): Default to DWARF_FRAME_REGISTERS.
1999-12-29 Bruce Korb <autogen@linuxbox.com>
#define FIRST_PSEUDO_REGISTER 19
+/* Number of hardware registers that go into the DWARF-2 unwind info.
+ If not defined, equals FIRST_PSEUDO_REGISTER. */
+
+#define DWARF_FRAME_REGISTERS 17
+
/* 1 for registers that have pervasive standard uses
and are not available for the register allocator.
On the 80386, the stack pointer is such, as is the arg pointer. */
#ifdef PC_REGNUM
#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM)
#else
-#define DWARF_FRAME_RETURN_COLUMN FIRST_PSEUDO_REGISTER
+#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS
#endif
#endif
{
register unsigned regno = REGNO (rtl);
- if (regno >= FIRST_PSEUDO_REGISTER)
+ if (regno >= DWARF_FRAME_REGISTERS)
{
warning ("internal regno botch: regno = %d\n", regno);
regno = 0;
rtx addr = expand_expr (address, NULL_RTX, VOIDmode, 0);
rtx mem = gen_rtx_MEM (mode, addr);
- for (i = 0; i < FIRST_PSEUDO_REGISTER; ++i)
+ for (i = 0; i < DWARF_FRAME_REGISTERS; ++i)
{
int offset = i * GET_MODE_SIZE (mode);
int size = GET_MODE_SIZE (reg_raw_mode[i]);
{
register unsigned regno = REGNO (rtl);
- if (regno >= FIRST_PSEUDO_REGISTER)
+ if (regno >= DWARF_FRAME_REGISTERS)
{
warning_with_decl (dwarf_last_decl, "internal regno botch: regno = %d\n",
regno);
/* Header file for unwinding stack frames for exception handling. */
/* Compile this one with gcc. */
-/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
Contributed by Jason Merrill <jason@cygnus.com>.
This file is part of GNU CC.
Boston, MA 02111-1307, USA. */
+#ifndef DWARF_FRAME_REGISTERS
+#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
+#endif
+
typedef struct frame_state
{
void *cfa;
void *eh_ptr;
long cfa_offset;
long args_size;
- long reg_or_offset[FIRST_PSEUDO_REGISTER+1];
+ long reg_or_offset[DWARF_FRAME_REGISTERS+1];
unsigned short cfa_reg;
unsigned short retaddr_column;
- char saved[FIRST_PSEUDO_REGISTER+1];
+ char saved[DWARF_FRAME_REGISTERS+1];
} frame_state;
/* Values for 'saved' above. */