dwarf_set_frame_cfa_value
,
dwarf_set_frame_rule_initial_value
,
dwarf_set_frame_rule_table_size
,
dwarf_set_frame_same_value
,
dwarf_set_frame_undefined_value
—
set internal register rule table parameters
DWARF Access Library (libdwarf, -ldwarf)
#include <libdwarf.h>
Dwarf_Half
dwarf_set_frame_cfa_value
(Dwarf_Debug
dbg, Dwarf_Half value);
Dwarf_Half
dwarf_set_frame_rule_initial_value
(Dwarf_Debug
dbg, Dwarf_Half value);
Dwarf_Half
dwarf_set_frame_rule_table_size
(Dwarf_Debug
dbg, Dwarf_Half value);
Dwarf_Half
dwarf_set_frame_same_value
(Dwarf_Debug
dbg, Dwarf_Half value);
Dwarf_Half
dwarf_set_frame_undefined_value
(Dwarf_Debug
dbg, Dwarf_Half value);
These functions set the parameters of the internal register rule table.
Argument dbg should reference a DWARF debug
context allocated using
dwarf_init(3).
Argument value should hold the parameter
value to set.
Function dwarf_set_frame_cfa_value
() sets
the column number for the CFA register rule in the internal register rule
table. The constant DW_FRAME_CFA_COL
is the default
CFA register column number for DWARF2-only interfaces, and the constant
DW_FRAME_CFA_COL3
is the default CFA column number
for DWARF3-compatible interfaces.
Function
dwarf_set_frame_rule_initial_value
() sets the
initial value of the register rules in the internal register rule table. The
default initial value is the constant
DW_FRAME_REG_INITIAL_VALUE
, defined in the header
file <libdwarf.h>
.
Function dwarf_set_frame_rule_table_size
()
sets the maxmium number of columns of the internal register rule table.
Argument value should be at least as large as the
number of real registers in the ABI.
Function dwarf_set_frame_same_value
() sets
the register number representing the “same value” register
rule. The default register number for the “same value” rule is
the constant DW_FRAME_SAME_VAL
, defined in the
header file
<libdwarf.h>
.
Function dwarf_set_frame_undefined_value
()
sets the register number representing the “undefined” register
rule. The default register number for the “undefined” rule is
the constant DW_FRAME_UNDEFINED_VAL
, defined in the
header file
<libdwarf.h>
.
These functions return the previous value of the parameter being set.