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DWARF_SET_FRAME_CFA_VALUE(3) FreeBSD Library Functions Manual
NAME
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
LIBRARY
DWARF Access Library (libdwarf, -ldwarf)
SYNOPSIS
#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);
DESCRIPTION
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
dwarf(3), dwarf_get_fde_at_pc(3), dwarf_get_fde_info_for_all_regs(3),
dwarf_get_fde_info_for_all_regs3(3), dwarf_get_fde_info_for_cfa_reg3(3),
dwarf_get_fde_info_for_reg(3), dwarf_get_fde_info_for_reg3(3),
dwarf_get_fde_n(3)
FreeBSD 14.0-RELEASE-p11 June 18, 2011 FreeBSD 14.0-RELEASE-p11