DWARF_LOCLIST_FROM_EXPR(3) | Library Functions Manual | DWARF_LOCLIST_FROM_EXPR(3) |
dwarf_loclist_from_expr
,
dwarf_loclist_from_expr_a
,
dwarf_loclist_from_expr_b
—
#include <libdwarf.h>
int
dwarf_loclist_from_expr
(Dwarf_Debug
dbg, Dwarf_Ptr bytes_in,
Dwarf_Unsigned bytes_len,
Dwarf_Locdesc **llbuf, Dwarf_Signed
*listlen, Dwarf_Error *err);
int
dwarf_loclist_from_expr_a
(Dwarf_Debug
dbg, Dwarf_Ptr bytes_in,
Dwarf_Unsigned bytes_len, Dwarf_Half
addr_size, Dwarf_Locdesc **llbuf,
Dwarf_Signed *listlen, Dwarf_Error
*err);
int
dwarf_loclist_from_expr_b
(Dwarf_Debug
dbg, Dwarf_Ptr bytes_in,
Dwarf_Unsigned bytes_len, Dwarf_Half
addr_size, Dwarf_Half offset_size,
Dwarf_Small version, Dwarf_Locdesc
**llbuf, Dwarf_Signed *listlen,
Dwarf_Error *error);
dwarf_loclist_from_expr
() translates DWARF
location expression bytes into a Dwarf_Locdesc
descriptor. The size for address related data is taken to be the default
address size for the object being read.
Argument dbg should reference a DWARF debug context allocated using dwarf_init(3).
Argument bytes_in should point to an array of DWARF location expression bytes.
Argument bytes_len should specify the number of the location expression bytes to be translated.
Argument llbuf should point to a location which will be set to a pointer to a returned Dwarf_Locdesc descriptor.
Argument listlen should point to a location which will hold the number of the Dwarf_Locdesc descriptors returned. In this case it is always set to 1.
If argument err is not NULL, it will be used to store error information in case of an error.
Function dwarf_loclist_from_expr_a
() is
identical to function dwarf_loclist_from_expr
(),
except that it requires one additional argument
addr_size, which specifies the address size to use
when translating the location expression bytes.
Function dwarf_loclist_from_expr_b
() is
identical to function dwarf_loclist_from_expr_a
()
except that it requires two additional arguments for translating the
location expression bytes. Argument offset_size
specifies the offset size, and argument version
specifies the DWARF version. These values are required to correctly
translate the DW_OP_GNU_implicit_pointer
opcode.
DW_DLA_LOC_BLOCK
.DW_DLA_LOCDESC
.DW_DLV_OK
. In case
of an error, they return DW_DLV_ERROR
and set the
argument err.
DW_DLE_ARGUMENT
]DW_DLE_ARGUMENT
]DW_DLE_ARGUMENT
]DW_DLE_LOC_EXPR_BAD
]DW_DLE_MEMORY
]December 21, 2014 | NetBSD 9.2 |