DWARF_SRCLINES(3) | Library Functions Manual | DWARF_SRCLINES(3) |
dwarf_srclines
—
#include <libdwarf.h>
int
dwarf_srclines
(Dwarf_Die die,
Dwarf_Line **lines, Dwarf_Signed
*nlines, Dwarf_Error *err);
dwarf_srclines
() returns line number
information associated with a compilation unit. Line number information is
returned as an array of Dwarf_Line descriptors.
Argument die should reference a DWARF debugging information entry descriptor with line number information, see dwarf(3). Argument lines should point to a location that will hold a pointer to the returned array of Dwarf_Line descriptors. Argument nlines should point to a location that will hold the number of descriptors returned. If argument err is not NULL, it will be used to store error information in case of an error.
The returned Dwarf_Line descriptors may be passed to the other line number functions in the API set to retrieve specific information about each source line.
dwarf_srclines_dealloc
() to indicate that
the memory may be freed.
dwarf_srclines
() returns
DW_DLV_OK
when it succeeds. In case of an error, it
returns DW_DLV_ERROR
and sets the argument
err.
dwarf_srclines
() can fail with:
DW_DLE_ARGUMENT
]DW_DLE_NO_ENTRY
]DW_DLE_MEMORY
]int n; Dwarf_Die die; Dwarf_Error de; char *filename; Dwarf_Line *lines; Dwarf_Signed nlines; Dwarf_Addr lineaddr; Dwarf_Unsigned lineno; /* variable "die" should reference a DIE for a compilation unit */ if (dwarf_srclines(die, &lines, &nlines, &de) != DW_DLV_OK) errx(EXIT_FAILURE, "dwarf_srclines: %s", dwarf_errmsg(de)); for (n = 0; n < nlines; n++) { /* Retrieve the file name for this descriptor. */ if (dwarf_linesrc(lines[n], &filename, &de)) errx(EXIT_FAILURE, "dwarf_linesrc: %s", dwarf_errmsg(de)); /* Retrieve the line number in the source file. */ if (dwarf_lineno(lines[n], &lineno, &de)) errx(EXIT_FAILURE, "dwarf_lineno: %s", dwarf_errmsg(de)); /* Retrieve the virtual address for this line. */ if (dwarf_lineaddr(lines[n], &lineaddr, &de)) errx(EXIT_FAILURE, "dwarf_lineaddr: %s", dwarf_errmsg(de)); }
November 9, 2011 | NetBSD 9.2 |