DWARF_GET_FDE_INFO_FOR_REG(3) | Library Functions Manual | DWARF_GET_FDE_INFO_FOR_REG(3) |
dwarf_get_fde_info_for_reg
—
#include <libdwarf.h>
int
dwarf_get_fde_info_for_reg
(Dwarf_Fde
fde, Dwarf_Half table_column,
Dwarf_Addr pc, Dwarf_Signed
*offset_relevant, Dwarf_Signed *register_num,
Dwarf_Signed *offset, Dwarf_Addr
*row_pc, Dwarf_Error *error);
dwarf_get_fde_info_for_reg
() retrieves a
register rule from the register rule table associated with a given FDE
descriptor, given a program counter address and rule column number.
Argument fde should reference a valid DWARF FDE descriptor.
Arugment table_column should hold the column number of the register rule desired.
Argument pc should hold the program counter address to be used to locate the desired register rule row.
On successful execution,
dwarf_get_fde_info_for_reg
() stores information
about the register rule found into the locations pointed to by the arguments
offset_relevant, register_num,
offset and row_pc.
If there is an offset value associated with the register rule, the location pointed to by argument offset_relevant will be set to 1.
Argument register_num should point to a location which will hold the register number associated with the register rule.
Argument offset should point to a location which will be set to the offset value associated with the register rule, or to 0 if the register rule does not have an offset value.
Argument row_pc should point to a location which will be set to the lowest program counter address associated with the register rule found.
If argument err is not NULL, it will be used to return an error descriptor in case of an error.
dwarf_get_fde_info_for_reg
() is deprecated
since it only supports DWARF2 frame sections. Applications should instead use
function
dwarf_get_fde_info_for_reg3(3)
which supports both DWARF2 and DWARF3 frame sections.
dwarf_get_fde_info_for_reg
() returns
DW_DLV_OK
when it succeeds. In case of an error, it
returns DW_DLV_ERROR
and sets the argument
err.
dwarf_get_fde_info_for_reg
() can fail with:
DW_DLE_ARGUMENT
]DW_DLE_FRAME_TABLE_COL_BAD
]DW_DLE_PC_NOT_IN_FDE_RANGE
]June 4, 2011 | NetBSD 9.2 |