From: Carl Love <cel@linux.ibm.com>
To: gdb-patches@sourceware.org, Tom de Vries <tdevries@suse.de>,
Carl Love <cel@linux.ibm.com>
Subject: Re: [PATCH v2 3/4] [gdb/testsuite] Fix end_sequence addresses
Date: Wed, 24 Apr 2024 10:45:59 -0700 [thread overview]
Message-ID: <7d515dd6-f327-4587-89c6-ed7e93b7efdd@linux.ibm.com> (raw)
In-Reply-To: <20240408120445.12544-3-tdevries@suse.de>
Tom:
I am seeing a regression on Power 10 with this patch. Specifically the change to file dw2-lines.exp.
--- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
@@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {
line [line_for bar_label_4]
DW_LNS_copy
- DW_LNE_set_address bar_label_5
+ DW_LNE_set_address "$main_start + $main_len"
DW_LNE_end_sequence
}
}
The change results in the test failing on PowerPC.
Running /home/carll/GDB/build-current/gdb/testsuite/../../../binutils-gdb-current/gdb/testsuite/gdb.dwarf2/dw2-lines.exp ...
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: continue to breakpoint: foo \(1\) (the program exited)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: next to foo (2) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: next to foo (3) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=32: next to foo (4) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: continue to breakpoint: foo \(1\) (the program exited)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: next to foo (2) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: next to foo (3) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=32: lv=2: ldw=64: next to foo (4) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: continue to breakpoint: foo \(1\) (the program exited)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: next to foo (2) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: next to foo (3) (the program is no longer running)
FAIL: gdb.dwarf2/dw2-lines.exp: cv=2: cdw=64: lv=2: ldw=32: next to foo (4) (the program is no longer running)
etc.
If I edit the file and change the line back to bar_label_5 the test passes. I am only seeing an issue with the change to in this file. I specifically tested dw2-inline-header-2.exp and the change seems to work just fine there. I am really puzzled as to why it doesn't work in file dw2-lines.exp.
I put the print statement in:
puts "CARLL, main_start = $main_start, main_len = $main_len"
DW_LNE_set_address "$main_start + $main_len"
I get
CARLL, main_start = main_label - 28, main_len = 76
I tried printing main_label but it doesn't seem to be defined.
ERROR: in testcase /../binutils-gdb-current/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
ERROR: can't read "main_label": no such variable
ERROR: tcl error code TCL LOOKUP VARNAME main_label
ERROR: tcl error info:
can't read "main_label": no such variable
I was hoping to be able to verify that bar_label_5 and "$main_start + $main_len" are the same but no luck.
Anyway, any thoughts as to why this is failing on PowerPC? I assume it works fine on X86.
At the moment, I am a little puzzled as to what the right fix is.
Carl
On 4/8/24 05:04, Tom de Vries wrote:
> I noticed in test-case gdb.reverse/map-to-same-line.exp, that the end of main:
> ...
> 00000000004102c4 <end_of_sequence>:
> 4102c4: 52800000 mov w0, #0x0 // #0
> 4102c8: 9100c3ff add sp, sp, #0x30
> 4102cc: d65f03c0 ret
> ...
> is not described by the line table:
> ...
> File name Line number Starting address View Stmt
> ...
> map-to-same-line.c 54 0x4102ac x
> map-to-same-line.c - 0x4102c4
> ...
>
> Fix this by ending the line table at $main_end.
>
> Likewise in a few other test-cases, found using:
> ...
> $ find gdb/testsuite/ -type f \
> | xargs grep -B1 DW_LNE_end_sequence \
> | grep set_address \
> | egrep -v "_end|_len"
> ...
>
> Tested on aarch64-linux.
> ---
> gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp | 2 +-
> gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp | 2 +-
> gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp | 2 +-
> gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp | 2 +-
> gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp | 7 +++++--
> gdb/testsuite/gdb.dwarf2/dw2-lines.exp | 2 +-
> gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp | 4 +++-
> gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl | 2 +-
> gdb/testsuite/gdb.reverse/map-to-same-line.c | 1 -
> gdb/testsuite/gdb.reverse/map-to-same-line.exp | 3 ++-
> 10 files changed, 16 insertions(+), 11 deletions(-)
>
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp b/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
> index 1880f4cb7fb..5d6e13a9ae0 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-gas-workaround.exp
> @@ -70,7 +70,7 @@ Dwarf::assemble $asm_file {
> line [line_for bar_label]
> DW_LNS_copy
>
> - DW_LNE_set_address bar_label_2
> + DW_LNE_set_address $bar_end
> DW_LNE_end_sequence
> }
> }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
> index 6d12e968f41..1f30c5c3316 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-1.exp
> @@ -146,7 +146,7 @@ proc do_test { start_label func_name tag } {
> DW_LNS_advance_line 1
> DW_LNS_copy
>
> - DW_LNE_set_address line_label_7
> + DW_LNE_set_address "$main_start + $main_len"
> DW_LNE_end_sequence
> }
> }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
> index 6a5f7d6dd76..68f1fc83859 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-2.exp
> @@ -134,7 +134,7 @@ Dwarf::assemble $asm_file {
> DW_LNS_advance_line 1
> DW_LNS_copy
>
> - DW_LNE_set_address line_label_7
> + DW_LNE_set_address "$main_start + $main_len"
> DW_LNE_end_sequence
> }
> }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
> index b3db154db25..1b8d136e70e 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-inline-header-3.exp
> @@ -123,7 +123,7 @@ Dwarf::assemble $asm_file {
> DW_LNS_negate_stmt
> DW_LNS_copy
>
> - DW_LNE_set_address line_label_7
> + DW_LNE_set_address "$main_start + $main_len"
> DW_LNE_end_sequence
> }
> }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp b/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
> index 603a616930a..c510de42037 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-line-number-zero.exp
> @@ -27,6 +27,9 @@ Dwarf::assemble $asm_file {
> declare_labels Llines
> global srcdir subdir srcfile
>
> + get_func_info bar1
> + get_func_info bar2
> +
> cu {} {
> compile_unit {
> {language @DW_LANG_C}
> @@ -69,7 +72,7 @@ Dwarf::assemble $asm_file {
> line 33
> DW_LNS_copy
>
> - DW_LNE_set_address bar1_label_5
> + DW_LNE_set_address $bar1_end
> DW_LNE_end_sequence
>
>
> @@ -91,7 +94,7 @@ Dwarf::assemble $asm_file {
> line 47
> DW_LNS_copy
>
> - DW_LNE_set_address bar2_label_5
> + DW_LNE_set_address $bar2_end
> DW_LNE_end_sequence
> }
> }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
> index 5fd6ae04d38..85d5e9c8afb 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-lines.exp
> @@ -104,7 +104,7 @@ proc test_1 { _cv _cdw64 _lv _ldw64 {_string_form ""}} {
> line [line_for bar_label_4]
> DW_LNS_copy
>
> - DW_LNE_set_address bar_label_5
> + DW_LNE_set_address "$main_start + $main_len"
> DW_LNE_end_sequence
> }
> }
> diff --git a/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp b/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
> index 671e3e634ac..5a0705fc613 100644
> --- a/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
> +++ b/gdb/testsuite/gdb.dwarf2/dw2-vendor-extended-opcode.exp
> @@ -30,6 +30,8 @@ Dwarf::assemble $asm_file {
> set DW_LNE_lo_usr 0x80
> set DW_LNE_hi_usr 0xff
>
> + get_func_info main
> +
> cu {} {
> compile_unit {
> {language @DW_LANG_C}
> @@ -54,7 +56,7 @@ Dwarf::assemble $asm_file {
> DW_LNE_user 2 $DW_LNE_hi_usr
> DW_LNS_copy
>
> - DW_LNE_set_address main_label_2
> + DW_LNE_set_address $main_end
> DW_LNE_end_sequence
> }
> }
> diff --git a/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl b/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
> index 968378620a0..5817b2b0f53 100644
> --- a/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
> +++ b/gdb/testsuite/gdb.dwarf2/imported-unit-bp.exp.tcl
> @@ -110,7 +110,7 @@ Dwarf::assemble $asm_file {
> DW_LNS_negate_stmt
> DW_LNS_copy
>
> - DW_LNE_set_address line_label_7
> + DW_LNE_set_address "$func_start + $func_len"
> DW_LNE_end_sequence
> }
> }
> diff --git a/gdb/testsuite/gdb.reverse/map-to-same-line.c b/gdb/testsuite/gdb.reverse/map-to-same-line.c
> index 45e7ffb0f06..7185955f40a 100644
> --- a/gdb/testsuite/gdb.reverse/map-to-same-line.c
> +++ b/gdb/testsuite/gdb.reverse/map-to-same-line.c
> @@ -53,6 +53,5 @@ main (void)
> asm ("main_return: .globl main_return");
> k = j; f3 = f2; str_3 = str_2; /* TAG: main return */
>
> - asm ("end_of_sequence: .globl end_of_sequence");
> return 0; /* TAG: main return */
> }
> diff --git a/gdb/testsuite/gdb.reverse/map-to-same-line.exp b/gdb/testsuite/gdb.reverse/map-to-same-line.exp
> index b556e7cb676..067fe012702 100644
> --- a/gdb/testsuite/gdb.reverse/map-to-same-line.exp
> +++ b/gdb/testsuite/gdb.reverse/map-to-same-line.exp
> @@ -100,7 +100,8 @@ Dwarf::assemble $asm_file {
> DW_LNE_set_address main_return
> line [gdb_get_line_number "TAG: main return"]
> DW_LNS_copy
> - DW_LNE_set_address end_of_sequence
> +
> + DW_LNE_set_address $main_end
> DW_LNE_end_sequence
> }
> }
next prev parent reply other threads:[~2024-04-24 17:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-08 12:04 [PATCH v2 1/4] [gdb/testsuite] Require address update for DW_LNE_end_sequence Tom de Vries
2024-04-08 12:04 ` [PATCH v2 2/4] [gdb/testsuite] Require address update for DW_LNS_copy Tom de Vries
2024-04-08 12:04 ` [PATCH v2 3/4] [gdb/testsuite] Fix end_sequence addresses Tom de Vries
2024-04-24 17:45 ` Carl Love [this message]
2024-04-24 18:07 ` Carl Love
2024-04-24 18:28 ` Carl Love
2024-04-24 21:07 ` Tom de Vries
2024-04-25 17:05 ` Carl Love
2024-04-25 20:46 ` Tom de Vries
2024-04-08 12:04 ` [PATCH v2 4/4] [gdb/testsuite] Require DW_LNE_end_sequence Tom de Vries
2024-04-17 10:58 ` [PATCH v2 1/4] [gdb/testsuite] Require address update for DW_LNE_end_sequence Tom de Vries
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7d515dd6-f327-4587-89c6-ed7e93b7efdd@linux.ibm.com \
--to=cel@linux.ibm.com \
--cc=gdb-patches@sourceware.org \
--cc=tdevries@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).