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dwarf2.h (DW_CFA_GNU_negative_offset_extended): New constant.

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* dwarf2.h (DW_CFA_GNU_negative_offset_extended): New constant.
* dwarf2out.c (dwarf_cfi_name): Print name of new constant.
(reg_save): Use DW_CFA_GNU_negative_offset_extended when needed.
(output_cfi): Handle output of DW_CFA_GNU_negative_offset_extended.
* frame.c (execute_cfa_insn): Handle
DW_CFA_GNU_negative_offset_extended.

From-SVN: r31858
This commit is contained in:
Geoff Keating 2000-02-09 01:57:21 +00:00 committed by Geoffrey Keating
parent 5568fb48cc
commit 3f388b42b0
4 changed files with 28 additions and 3 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2000-02-08 Geoff Keating <geoffk@cygnus.com>
* dwarf2.h (DW_CFA_GNU_negative_offset_extended): New constant.
* dwarf2out.c (dwarf_cfi_name): Print name of new constant.
(reg_save): Use DW_CFA_GNU_negative_offset_extended when needed.
(output_cfi): Handle output of DW_CFA_GNU_negative_offset_extended.
* frame.c (execute_cfa_insn): Handle
DW_CFA_GNU_negative_offset_extended.
2000-02-08 Richard Henderson <rth@cygnus.com>
* flow.c (tidy_fallthru_edges): Split out from ...

6
gcc/dwarf2.h
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@ -1,6 +1,7 @@
/* Declarations and definitions of codes relating to the DWARF2 symbolic
debugging information format.
Copyright (C) 1992, 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
Copyright (C) 1992, 1993, 1995, 1996, 1997, 2000
Free Software Foundation, Inc.
Contributed by Gary Funck (gary@intrepid.com). Derived from the
DWARF 1 implementation written by Ron Guilmette (rfg@monkeys.com).
@ -501,7 +502,8 @@ enum dwarf_call_frame_info
/* GNU extensions */
DW_CFA_GNU_window_save = 0x2d,
DW_CFA_GNU_args_size = 0x2e
DW_CFA_GNU_args_size = 0x2e,
DW_CFA_GNU_negative_offset_extended = 0x2f
};
#define DW_CIE_ID 0xffffffff

8
gcc/dwarf2out.c
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@ -643,6 +643,8 @@ dwarf_cfi_name (cfi_opc)
return "DW_CFA_GNU_window_save";
case DW_CFA_GNU_args_size:
return "DW_CFA_GNU_args_size";
case DW_CFA_GNU_negative_offset_extended:
return "DW_CFA_GNU_negative_offset_extended";
default:
return "DW_CFA_<unknown>";
@ -872,7 +874,10 @@ reg_save (label, reg, sreg, offset)
offset /= DWARF_CIE_DATA_ALIGNMENT;
if (offset < 0)
abort ();
{
cfi->dw_cfi_opc = DW_CFA_GNU_negative_offset_extended;
offset = -offset;
}
cfi->dw_cfi_oprnd2.dw_cfi_offset = offset;
}
else
@ -1559,6 +1564,7 @@ output_cfi (cfi, fde)
break;
#endif
case DW_CFA_offset_extended:
case DW_CFA_GNU_negative_offset_extended:
case DW_CFA_def_cfa:
output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
fputc ('\n', asm_out_file);

8
gcc/frame.c
View File

@ -795,6 +795,14 @@ execute_cfa_insn (void *p, struct frame_state_internal *state,
state->s.args_size = offset;
break;
case DW_CFA_GNU_negative_offset_extended:
p = decode_uleb128 (p, &reg);
p = decode_uleb128 (p, &offset);
offset *= info->data_align;
state->s.saved[reg] = REG_SAVED_OFFSET;
state->s.reg_or_offset[reg] = -offset;
break;
default:
abort ();
}