libdw, readelf: Read inlining info in NVIDIA extended line map
As of CUDA 11.2, NVIDIA added extensions to the line map section
of CUDA binaries to represent inlined functions. These extensions
include
- two new fields in a line table row to represent inline
information: context, and functionname,
- two new DWARF extended opcodes: DW_LNE_NVIDIA_inlined_call,
DW_LNE_NVIDIA_set_function_name,
- an additional word in the line table header that indicates
the offset in the .debug_str function where the function
names for this line table begin, and
A line table row for an inlined function contains a non-zero "context"
value. The “context” field indicates the index of the line table row
that serves as the call site for an inlined context.
The "functionname" field in a line table row is only meaningful if the
"context" field of the row is non-zero. A meaningful "functionname"
field contains an index into the .debug_str section relative to the
base offset established in the line table header; the position in the
.debug_str section indicates the name of the inlined function.
These extensions resemble the proposed DWARF extensions
(http://dwarfstd.org/ShowIssue.php?issue=140906.1) by Cary Coutant,
but are not identical.
This commit integrates support for handling NVIDIA's extended line
maps into elfutil's libdw library, by adding two functions
dwarf_linecontext and dwarf_linefunctionname, and the readelf
--debug-dump=line command line utility.
Signed-off-by: John M Mellor-Crummey <johnmc@rice.edu>
Signed-off-by: Mark Wielaard <mark@klomp.org>
diff --git a/ChangeLog b/ChangeLog
index 6255fe6..d4b89f9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2021-09-03 John Mellor-Crummey <johnmc@rice.edu>
+
+ * NEWS: Read inlining info in NVIDIA extended line map
+
2021-08-10 Adrian Ratiu <adrian.ratiu@collabora.com>
* configure.ac (AC_CACHE_CHECK): Rework std=gnu99 check to allow clang.
diff --git a/NEWS b/NEWS
index b812b74..897b391 100644
--- a/NEWS
+++ b/NEWS
@@ -16,6 +16,11 @@
Limit the duration of groom ops roughly to rescan (-t) times.
Several other performance improvements & prometheus metrics.
+libdw: Support for the NVIDIA Cuda line map extensions.
+ DW_LNE_NVIDIA_inlined_call and DW_LNE_NVIDIA_set_function_name
+ are defined in dwarf.h. New functions dwarf_linecontext and
+ dwarf_linefunctionname
+
Version 0.185
debuginfod-client: Simplify curl handle reuse so downloads which
diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index 38e6efb..ca742e6 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,3 +1,22 @@
+2021-10-20 John M Mellor-Crummey <johnmc@rice.edu>
+
+ * dwarf_linecontext.c: New file.
+ * dwarf_linefunctionname.c: Likewise.
+ * Makefile.am (libdw_a_SOURCES): Add dwarf_linecontext.c and
+ dwarf_linefunctionname.c
+ * dwarf.h: Add DW_LNE_NVIDIA_inlined_call and
+ DW_LNE_NVIDIA_set_function_name.
+ * dwarf_getsrclines.c (struct line_state): Add context and
+ function_name fields.
+ (add_new_line): Set context and function_name.
+ (MAX_STACK_LINES): Reduce to MAX_STACK_ALLOC / 2.
+ (read_srclines): Initialize context and function_name. Try to
+ read debug_str_offset if available. Handle
+ DW_LNE_NVIDIA_inlined_call and DW_LNE_NVIDIA_set_function_name.
+ * libdw.h (dwarf_linecontext): New declaration.
+ (dwarf_linefunctionname): Likewise.
+ * libdw.map (ELFUTILS_0.186): New section.
+
2021-11-08 Mark Wielaard <mark@klomp.org>
* dwarf_begin_elf.c (scn_dwarf_type): New function.
diff --git a/libdw/Makefile.am b/libdw/Makefile.am
index 6b7834a..4fda33b 100644
--- a/libdw/Makefile.am
+++ b/libdw/Makefile.am
@@ -63,6 +63,7 @@
dwarf_linesrc.c dwarf_lineno.c dwarf_lineaddr.c \
dwarf_linecol.c dwarf_linebeginstatement.c \
dwarf_lineendsequence.c dwarf_lineblock.c \
+ dwarf_linecontext.c dwarf_linefunctionname.c \
dwarf_lineprologueend.c dwarf_lineepiloguebegin.c \
dwarf_lineisa.c dwarf_linediscriminator.c \
dwarf_lineop_index.c dwarf_line_file.c \
diff --git a/libdw/dwarf.h b/libdw/dwarf.h
index 19a4be9..3ce7f23 100644
--- a/libdw/dwarf.h
+++ b/libdw/dwarf.h
@@ -844,6 +844,10 @@
DW_LNE_set_discriminator = 4,
DW_LNE_lo_user = 128,
+
+ DW_LNE_NVIDIA_inlined_call = 144,
+ DW_LNE_NVIDIA_set_function_name = 145,
+
DW_LNE_hi_user = 255
};
diff --git a/libdw/dwarf_getsrclines.c b/libdw/dwarf_getsrclines.c
index 8fc48e1..2c1d7a4 100644
--- a/libdw/dwarf_getsrclines.c
+++ b/libdw/dwarf_getsrclines.c
@@ -93,6 +93,8 @@
struct linelist *linelist;
size_t nlinelist;
unsigned int end_sequence;
+ unsigned int context;
+ unsigned int function_name;
};
static inline void
@@ -139,6 +141,8 @@
SET (epilogue_begin);
SET (isa);
SET (discriminator);
+ SET (context);
+ SET (function_name);
#undef SET
@@ -161,7 +165,7 @@
the stack. Stack allocate some entries, only dynamically malloc
when more than MAX. */
#define MAX_STACK_ALLOC 4096
-#define MAX_STACK_LINES MAX_STACK_ALLOC
+#define MAX_STACK_LINES (MAX_STACK_ALLOC / 2)
#define MAX_STACK_FILES (MAX_STACK_ALLOC / 4)
#define MAX_STACK_DIRS (MAX_STACK_ALLOC / 16)
@@ -180,7 +184,9 @@
.prologue_end = false,
.epilogue_begin = false,
.isa = 0,
- .discriminator = 0
+ .discriminator = 0,
+ .context = 0,
+ .function_name = 0
};
/* The dirs normally go on the stack, but if there are too many
@@ -648,6 +654,13 @@
}
}
+ unsigned int debug_str_offset = 0;
+ if (unlikely (linep == header_start + header_length - 4))
+ {
+ /* CUBINs contain an unsigned 4-byte offset */
+ debug_str_offset = read_4ubyte_unaligned_inc (dbg, linep);
+ }
+
/* Consistency check. */
if (unlikely (linep != header_start + header_length))
{
@@ -753,6 +766,8 @@
state.epilogue_begin = false;
state.isa = 0;
state.discriminator = 0;
+ state.context = 0;
+ state.function_name = 0;
break;
case DW_LNE_set_address:
@@ -831,6 +846,23 @@
get_uleb128 (state.discriminator, linep, lineendp);
break;
+ case DW_LNE_NVIDIA_inlined_call:
+ if (unlikely (linep >= lineendp))
+ goto invalid_data;
+ get_uleb128 (state.context, linep, lineendp);
+ if (unlikely (linep >= lineendp))
+ goto invalid_data;
+ get_uleb128 (state.function_name, linep, lineendp);
+ state.function_name += debug_str_offset;
+ break;
+
+ case DW_LNE_NVIDIA_set_function_name:
+ if (unlikely (linep >= lineendp))
+ goto invalid_data;
+ get_uleb128 (state.function_name, linep, lineendp);
+ state.function_name += debug_str_offset;
+ break;
+
default:
/* Unknown, ignore it. */
if (unlikely ((size_t) (lineendp - (linep - 1)) < len))
diff --git a/libdw/dwarf_linecontext.c b/libdw/dwarf_linecontext.c
new file mode 100644
index 0000000..84572e2
--- /dev/null
+++ b/libdw/dwarf_linecontext.c
@@ -0,0 +1,45 @@
+/* Return context in line.
+ This file is part of elfutils.
+ Written by John Mellor-Crummey <johnmc@rice.edu>, 2021.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ elfutils is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "libdwP.h"
+
+
+Dwarf_Line*
+dwarf_linecontext (Dwarf_Lines* lines, Dwarf_Line *line)
+{
+ if (lines == NULL || line == NULL)
+ return NULL;
+ if (line->context == 0 || line->context >= lines->nlines)
+ return NULL;
+
+ return lines->info + (line->context - 1);
+}
diff --git a/libdw/dwarf_linefunctionname.c b/libdw/dwarf_linefunctionname.c
new file mode 100644
index 0000000..e194d21
--- /dev/null
+++ b/libdw/dwarf_linefunctionname.c
@@ -0,0 +1,52 @@
+/* Return function name in line.
+ This file is part of elfutils.
+ Written by John Mellor-Crummey <johnmc@rice.edu>, 2021.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ elfutils is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <string.h>
+#include "libdwP.h"
+
+
+const char *
+dwarf_linefunctionname (Dwarf *dbg, Dwarf_Line *line)
+{
+ if (dbg == NULL || line == NULL)
+ return NULL;
+ if (line->context == 0)
+ return NULL;
+
+ Elf_Data *str_data = dbg->sectiondata[IDX_debug_str];
+ if (str_data == NULL || line->function_name >= str_data->d_size
+ || memchr (str_data->d_buf + line->function_name, '\0',
+ str_data->d_size - line->function_name) == NULL)
+ return NULL;
+
+ return (char *) str_data->d_buf + line->function_name;
+}
diff --git a/libdw/libdw.h b/libdw/libdw.h
index 77174d2..64d1689 100644
--- a/libdw/libdw.h
+++ b/libdw/libdw.h
@@ -701,6 +701,15 @@
extern const char *dwarf_linesrc (Dwarf_Line *line,
Dwarf_Word *mtime, Dwarf_Word *length);
+/* Return the caller of this line if inlined. If not inlined,
+ return NULL. */
+extern Dwarf_Line *dwarf_linecontext (Dwarf_Lines *lines, Dwarf_Line *line);
+
+/* Return the function name in this line record. If this line is
+ inlined, this is the name of the function that was inlined. If this line
+ is not inlined, return NULL. */
+extern const char *dwarf_linefunctionname (Dwarf *dbg, Dwarf_Line *line);
+
/* Return file information. The returned string is NULL when
an error occurred, or the file path. The file path is either absolute
or relative to the compilation directory. See dwarf_decl_file. */
diff --git a/libdw/libdw.map b/libdw/libdw.map
index 8ab0a2a..4f53037 100644
--- a/libdw/libdw.map
+++ b/libdw/libdw.map
@@ -360,3 +360,9 @@
# presume that NULL is only returned on error (otherwise ELF_K_NONE).
dwelf_elf_begin;
} ELFUTILS_0.175;
+
+ELFUTILS_0.186 {
+ global:
+ dwarf_linecontext;
+ dwarf_linefunctionname;
+} ELFUTILS_0.177;
diff --git a/libdw/libdwP.h b/libdw/libdwP.h
index 48f3a94..360ad01 100644
--- a/libdw/libdwP.h
+++ b/libdw/libdwP.h
@@ -303,6 +303,9 @@
unsigned int op_index:8;
unsigned int isa:8;
unsigned int discriminator:24;
+ /* These are currently only used for the NVIDIA extensions. */
+ unsigned int context;
+ unsigned int function_name;
};
struct Dwarf_Lines_s
diff --git a/src/ChangeLog b/src/ChangeLog
index 316bcb6..05b2522 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,9 @@
+2021-10-20 John M Mellor-Crummey <johnmc@rice.edu>
+
+ * readelf.c (print_debug_line_section): Try to read
+ debug_str_offset if available. Handle DW_LNE_NVIDIA_inlined_call
+ and DW_LNE_NVIDIA_set_function_name.
+
2021-10-06 Mark Wielaard <mark@klomp.org>
* elflint.c (check_sections): Don't dereference databits if bad.
diff --git a/src/readelf.c b/src/readelf.c
index 3a19906..c10038e 100644
--- a/src/readelf.c
+++ b/src/readelf.c
@@ -8478,6 +8478,8 @@
header_length = read_8ubyte_unaligned_inc (dbg, linep);
}
+ const unsigned char *header_start = linep;
+
/* Next the minimum instruction length. */
if ((size_t) (lineendp - linep) < 1)
goto invalid_data;
@@ -8761,6 +8763,13 @@
++linep;
}
+ unsigned int debug_str_offset = 0;
+ if (unlikely (linep == header_start + header_length - 4))
+ {
+ /* CUBINs contain an unsigned 4-byte offset */
+ debug_str_offset = read_4ubyte_unaligned_inc (dbg, linep);
+ }
+
if (linep == lineendp)
{
puts (_("\nNo line number statements."));
@@ -8909,6 +8918,59 @@
printf (_(" set discriminator to %u\n"), u128);
break;
+ case DW_LNE_NVIDIA_inlined_call:
+ {
+ if (unlikely (linep >= lineendp))
+ goto invalid_data;
+
+ unsigned int context;
+ get_uleb128 (context, linep, lineendp);
+
+ if (unlikely (linep >= lineendp))
+ goto invalid_data;
+
+ unsigned int function_name;
+ get_uleb128 (function_name, linep, lineendp);
+ function_name += debug_str_offset;
+
+ Elf_Data *str_data = dbg->sectiondata[IDX_debug_str];
+ char *function_str;
+ if (str_data == NULL || function_name >= str_data->d_size
+ || memchr (str_data->d_buf + function_name, '\0',
+ str_data->d_size - function_name) == NULL)
+ function_str = "???";
+ else
+ function_str = (char *) str_data->d_buf + function_name;
+
+ printf (_(" set inlined context %u,"
+ " function name %s (0x%x)\n"),
+ context, function_str, function_name);
+ break;
+ }
+
+ case DW_LNE_NVIDIA_set_function_name:
+ {
+ if (unlikely (linep >= lineendp))
+ goto invalid_data;
+
+ unsigned int function_name;
+ get_uleb128 (function_name, linep, lineendp);
+ function_name += debug_str_offset;
+
+ Elf_Data *str_data = dbg->sectiondata[IDX_debug_str];
+ char *function_str;
+ if (str_data == NULL || function_name >= str_data->d_size
+ || memchr (str_data->d_buf + function_name, '\0',
+ str_data->d_size - function_name) == NULL)
+ function_str = "???";
+ else
+ function_str = (char *) str_data->d_buf + function_name;
+
+ printf (_(" set function name %s (0x%x)\n"),
+ function_str, function_name);
+ }
+ break;
+
default:
/* Unknown, ignore it. */
puts (_(" unknown opcode"));
diff --git a/tests/.gitignore b/tests/.gitignore
index d0e83da..99d0481 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -85,6 +85,7 @@
/next-files
/next-lines
/next_cfi
+/nvidia_extended_linemap_libdw
/peel_type
/rdwrmmap
/read_unaligned
diff --git a/tests/ChangeLog b/tests/ChangeLog
index c5d0002..db8b13b 100644
--- a/tests/ChangeLog
+++ b/tests/ChangeLog
@@ -1,3 +1,16 @@
+2021-10-20 John M Mellor-Crummey <johnmc@rice.edu>
+
+ * nvidia_extended_linemap_libdw.c: New file.
+ * run-nvidia-extended-linemap-libdw.sh: New test.
+ * run-nvidia-extended-linemap-readelf.sh: Likewise.
+ * testfile_nvidia_linemap.bz2: New test file.
+ * .gitignore: Add nvidia_extended_linemap_libdw.
+ * Makefile.am (check_PROGRAMS): Add nvidia_extended_linemap_libdw.
+ (TESTS): Add run-nvidia-extended-linemap-libdw.sh and
+ run-nvidia-extended-linemap-readelf.sh
+ (EXTRA_DIST): Likewise and testfile_nvidia_linemap.bz2.
+ (nvidia_extended_linemap_libdw_LDADD): New variable.
+
2021-11-08 Mark Wielaard <mark@klomp.org>
* Makefile.am (TESTS): Add run-readelf-fat-lto.sh.
diff --git a/tests/Makefile.am b/tests/Makefile.am
index ccc4c05..6d3e75a 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -61,6 +61,7 @@
dwelf_elf_e_machine_string \
getphdrnum leb128 read_unaligned \
msg_tst system-elf-libelf-test \
+ nvidia_extended_linemap_libdw \
$(asm_TESTS)
asm_TESTS = asm-tst1 asm-tst2 asm-tst3 asm-tst4 asm-tst5 \
@@ -189,6 +190,7 @@
leb128 read_unaligned \
msg_tst system-elf-libelf-test \
$(asm_TESTS) run-disasm-bpf.sh run-low_high_pc-dw-form-indirect.sh \
+ run-nvidia-extended-linemap-libdw.sh run-nvidia-extended-linemap-readelf.sh \
run-readelf-dw-form-indirect.sh run-strip-largealign.sh
if !BIARCH
@@ -566,6 +568,8 @@
run-getphdrnum.sh testfile-phdrs.elf.bz2 \
run-test-includes.sh run-low_high_pc-dw-form-indirect.sh \
run-readelf-dw-form-indirect.sh testfile-dw-form-indirect.bz2 \
+ run-nvidia-extended-linemap-libdw.sh run-nvidia-extended-linemap-readelf.sh \
+ testfile_nvidia_linemap.bz2 \
testfile-largealign.o.bz2 run-strip-largealign.sh
@@ -739,6 +743,7 @@
getphdrnum_LDADD = $(libelf) $(libdw)
leb128_LDADD = $(libelf) $(libdw)
read_unaligned_LDADD = $(libelf) $(libdw)
+nvidia_extended_linemap_libdw_LDADD = $(libelf) $(libdw)
# We want to test the libelf header against the system elf.h header.
# Don't include any -I CPPFLAGS. Except when we install our own elf.h.
diff --git a/tests/nvidia_extended_linemap_libdw.c b/tests/nvidia_extended_linemap_libdw.c
new file mode 100644
index 0000000..20d8d40
--- /dev/null
+++ b/tests/nvidia_extended_linemap_libdw.c
@@ -0,0 +1,166 @@
+/* Inspect nvidia extended linemap with dwarf_next_lines.
+ Copyright (C) 2002, 2004, 2018 Red Hat, Inc.
+ This file is part of elfutils.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ elfutils is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <fcntl.h>
+#include <inttypes.h>
+#include <libelf.h>
+#include ELFUTILS_HEADER(dw)
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+
+int
+main (int argc, char *argv[])
+{
+ int result = 0;
+ int cnt;
+
+ for (cnt = 1; cnt < argc; ++cnt)
+ {
+ int fd = open (argv[cnt], O_RDONLY);
+
+ Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
+ if (dbg == NULL)
+ {
+ printf ("%s not usable: %s\n", argv[cnt], dwarf_errmsg (-1));
+ close (fd);
+ continue;
+ }
+
+ Dwarf_Off off;
+ Dwarf_Off next_off = 0;
+ Dwarf_CU *cu = NULL;
+ Dwarf_Lines *lb;
+ size_t nlb;
+ int res;
+ while ((res = dwarf_next_lines (dbg, off = next_off, &next_off, &cu,
+ NULL, NULL, &lb, &nlb)) == 0)
+ {
+ printf ("off = %" PRIu64 "\n", off);
+ printf (" %zu lines\n", nlb);
+
+ for (size_t i = 0; i < nlb; ++i)
+ {
+ Dwarf_Line *l = dwarf_onesrcline (lb, i);
+ if (l == NULL)
+ {
+ printf ("%s: cannot get individual line\n", argv[cnt]);
+ result = 1;
+ break;
+ }
+
+ Dwarf_Addr addr;
+ if (dwarf_lineaddr (l, &addr) != 0)
+ addr = 0;
+ const char *file = dwarf_linesrc (l, NULL, NULL);
+ int line;
+ if (dwarf_lineno (l, &line) != 0)
+ line = 0;
+
+ printf ("%" PRIx64 ": %s:%d:", (uint64_t) addr,
+ file ?: "???", line);
+
+ /* Getting the file path through the Dwarf_Files should
+ result in the same path. */
+ Dwarf_Files *files;
+ size_t idx;
+ if (dwarf_line_file (l, &files, &idx) != 0)
+ {
+ printf ("%s: cannot get file from line (%zd): %s\n",
+ argv[cnt], i, dwarf_errmsg (-1));
+ result = 1;
+ break;
+ }
+ const char *path = dwarf_filesrc (files, idx, NULL, NULL);
+ if ((path == NULL && file != NULL)
+ || (path != NULL && file == NULL)
+ || (strcmp (file, path) != 0))
+ {
+ printf ("%s: line %zd srcline (%s) != file srcline (%s)\n",
+ argv[cnt], i, file ?: "???", path ?: "???");
+ result = 1;
+ break;
+ }
+
+ int column;
+ if (dwarf_linecol (l, &column) != 0)
+ column = 0;
+ if (column >= 0)
+ printf ("%d:", column);
+
+ bool is_stmt;
+ if (dwarf_linebeginstatement (l, &is_stmt) != 0)
+ is_stmt = false;
+ bool end_sequence;
+ if (dwarf_lineendsequence (l, &end_sequence) != 0)
+ end_sequence = false;
+ bool basic_block;
+ if (dwarf_lineblock (l, &basic_block) != 0)
+ basic_block = false;
+ bool prologue_end;
+ if (dwarf_lineprologueend (l, &prologue_end) != 0)
+ prologue_end = false;
+ bool epilogue_begin;
+ if (dwarf_lineepiloguebegin (l, &epilogue_begin) != 0)
+ epilogue_begin = false;
+ printf (" is_stmt:%s, end_seq:%s, bb:%s, prologue:%s, epilogue:%s\n",
+ is_stmt ? "yes" : "no", end_sequence ? "yes" : "no",
+ basic_block ? "yes" : "no", prologue_end ? "yes" : "no",
+ epilogue_begin ? "yes" : "no");
+
+ Dwarf_Line* callee_context = l;
+ Dwarf_Line* caller_context = dwarf_linecontext (lb, l);
+ unsigned int depth = 0;
+ while (caller_context != NULL)
+ {
+ depth++;
+ for (unsigned int x = 0; x < depth; x++)
+ printf (" ");
+
+ const char *inlined_file = dwarf_linesrc (caller_context,
+ NULL, NULL);
+ int inlined_line;
+ if (dwarf_lineno (caller_context, &inlined_line) != 0)
+ inlined_line = 0;
+
+ printf ("%s inlined at %s:%d\n",
+ dwarf_linefunctionname(dbg, callee_context),
+ inlined_file ?: "???", inlined_line);
+
+ callee_context = caller_context;
+ caller_context = dwarf_linecontext (lb, callee_context);
+ }
+ }
+ }
+
+ if (res < 0)
+ {
+ printf ("dwarf_next_lines failed: %s\n", dwarf_errmsg (-1));
+ result = 1;
+ }
+
+ dwarf_end (dbg);
+ close (fd);
+ }
+
+ return result;
+}
diff --git a/tests/run-nvidia-extended-linemap-libdw.sh b/tests/run-nvidia-extended-linemap-libdw.sh
new file mode 100755
index 0000000..d1df2cf
--- /dev/null
+++ b/tests/run-nvidia-extended-linemap-libdw.sh
@@ -0,0 +1,60 @@
+# Copyright (C) 2011 Red Hat, Inc.
+# This file is part of elfutils.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# elfutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+. $srcdir/test-subr.sh
+
+# NOTE:
+# the file testfile_nvidia_linemap is a CUDA binary for an NVIDIA A100 generated as follows using CUDA 11.2
+# nvcc -o main main.cu -Xcompiler "-g -fopenmp" -O3 -lineinfo -arch sm_80 -lcudart -lcuda -lstdc++ -lm
+# cuobjdump -xelf all main
+# mv main.sm_80.cubin testfile_nvidia_linemap
+
+testfiles testfile_nvidia_linemap
+testrun_compare ${abs_top_builddir}/tests/nvidia_extended_linemap_libdw testfile_nvidia_linemap << EOF
+off = 0
+ 18 lines
+0: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:25:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+10: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:26:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+40: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:27:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+90: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:25:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+a0: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:28:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+100: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:28:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+100: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:8:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+ foo inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:28
+150: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:9:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+ foo inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:28
+1e0: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:31:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+1e0: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/bar.h:6:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+ bar inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:31
+1e0: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:8:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+ foo inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/bar.h:6
+ bar inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:31
+220: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:9:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+ foo inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/bar.h:6
+ bar inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:31
+2b0: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/bar.h:7:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+ bar inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:31
+2f0: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/bar.h:8:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+ bar inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:31
+2f0: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:18:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+ _Z1aPiS_S_ inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/bar.h:8
+ bar inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:31
+330: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:19:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+ _Z1aPiS_S_ inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/bar.h:8
+ bar inlined at /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:31
+3c0: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:33:0: is_stmt:yes, end_seq:no, bb:no, prologue:no, epilogue:no
+480: /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4/main.cu:33:0: is_stmt:yes, end_seq:yes, bb:no, prologue:no, epilogue:no
+EOF
diff --git a/tests/run-nvidia-extended-linemap-readelf.sh b/tests/run-nvidia-extended-linemap-readelf.sh
new file mode 100755
index 0000000..1fa9b7b
--- /dev/null
+++ b/tests/run-nvidia-extended-linemap-readelf.sh
@@ -0,0 +1,120 @@
+# Copyright (C) 2011 Red Hat, Inc.
+# This file is part of elfutils.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# elfutils is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+. $srcdir/test-subr.sh
+
+# NOTE:
+# the file testfile_nvidia_linemap is a CUDA binary for an NVIDIA A100 generated as follows using CUDA 11.2
+# nvcc -o main main.cu -Xcompiler "-g -fopenmp" -O3 -lineinfo -arch sm_80 -lcudart -lcuda -lstdc++ -lm
+# cuobjdump -xelf all main
+# mv main.sm_80.cubin testfile_nvidia_linemap
+
+testfiles testfile_nvidia_linemap
+testrun_compare ${abs_top_builddir}/src/readelf --debug-dump=line testfile_nvidia_linemap << EOF
+
+DWARF section [ 5] '.debug_line' at offset 0x3e0:
+
+Table at offset 0:
+
+ Length: 253
+ DWARF version: 2
+ Prologue length: 111
+ Address size: 8
+ Segment selector size: 0
+ Min instruction length: 1
+ Max operations per instruction: 1
+ Initial value if 'is_stmt': 1
+ Line base: -5
+ Line range: 14
+ Opcode base: 10
+
+Opcodes:
+ [1] 0 arguments
+ [2] 1 argument
+ [3] 1 argument
+ [4] 1 argument
+ [5] 1 argument
+ [6] 0 arguments
+ [7] 0 arguments
+ [8] 0 arguments
+ [9] 1 argument
+
+Directory table:
+ /home/johnmc/hpctoolkit-gpu-samples/nvidia_extended_linemap4
+
+File name table:
+ Entry Dir Time Size Name
+ 1 1 1626104146 1819 main.cu
+ 2 1 1626104111 211 bar.h
+
+Line number statements:
+ [ 79] extended opcode 2: set address to 0 <kernel>
+ [ 84] set file to 1
+ [ 86] advance line by constant 24 to 25
+ [ 88] copy
+ [ 89] special opcode 240: address+16 = 0x10 <kernel+0x10>, line+1 = 26
+ [ 8a] advance line by constant 1 to 27
+ [ 8c] advance address by 48 to 0x40 <kernel+0x40>
+ [ 8e] copy
+ [ 8f] advance line by constant -2 to 25
+ [ 91] advance address by 80 to 0x90 <kernel+0x90>
+ [ 94] copy
+ [ 95] special opcode 242: address+16 = 0xa0 <kernel+0xa0>, line+3 = 28
+ [ 96] advance address by 96 to 0x100 <kernel+0x100>
+ [ 99] copy
+ [ 9a] extended opcode 144: set inlined context 6, function name foo (0x0)
+ [ 9f] advance line by constant -20 to 8
+ [ a1] copy
+ [ a2] advance line by constant 1 to 9
+ [ a4] advance address by 80 to 0x150 <kernel+0x150>
+ [ a7] copy
+ [ a8] extended opcode 144: set inlined context 0, function name foo (0x0)
+ [ ad] advance line by constant 22 to 31
+ [ af] advance address by 144 to 0x1e0 <kernel+0x1e0>
+ [ b2] copy
+ [ b3] set file to 2
+ [ b5] extended opcode 144: set inlined context 9, function name bar (0x4)
+ [ ba] advance line by constant -25 to 6
+ [ bc] copy
+ [ bd] set file to 1
+ [ bf] extended opcode 144: set inlined context 10, function name foo (0x0)
+ [ c4] advance line by constant 2 to 8
+ [ c6] copy
+ [ c7] advance line by constant 1 to 9
+ [ c9] advance address by 64 to 0x220 <kernel+0x220>
+ [ cc] copy
+ [ cd] set file to 2
+ [ cf] extended opcode 144: set inlined context 9, function name bar (0x4)
+ [ d4] advance line by constant -2 to 7
+ [ d6] advance address by 144 to 0x2b0 <kernel+0x2b0>
+ [ d9] copy
+ [ da] advance line by constant 1 to 8
+ [ dc] advance address by 64 to 0x2f0 <kernel+0x2f0>
+ [ df] copy
+ [ e0] set file to 1
+ [ e2] extended opcode 144: set inlined context 14, function name _Z1aPiS_S_ (0x8)
+ [ e7] advance line by constant 10 to 18
+ [ e9] copy
+ [ ea] advance line by constant 1 to 19
+ [ ec] advance address by 64 to 0x330 <kernel+0x330>
+ [ ef] copy
+ [ f0] extended opcode 144: set inlined context 0, function name foo (0x0)
+ [ f5] advance line by constant 14 to 33
+ [ f7] advance address by 144 to 0x3c0 <kernel+0x3c0>
+ [ fa] copy
+ [ fb] advance address by 192 to 0x480
+ [ fe] extended opcode 1: end of sequence
+EOF
diff --git a/tests/testfile_nvidia_linemap.bz2 b/tests/testfile_nvidia_linemap.bz2
new file mode 100644
index 0000000..8a6d09f
--- /dev/null
+++ b/tests/testfile_nvidia_linemap.bz2
Binary files differ
