* [PATCH] fix dwz.exp on 32-bit targets
@ 2013-08-21 15:33 Tom Tromey
2013-08-22 13:54 ` Tom Tromey
0 siblings, 1 reply; 3+ messages in thread
From: Tom Tromey @ 2013-08-21 15:33 UTC (permalink / raw)
To: gdb-patches; +Cc: Tom Tromey
This fixes dwz.exp on 32-bit targets. It does so by introducing a new
"default" setting for the address size in the DWARF assembler.
Built and regtested on x86-64 Fedora 18.
I also ran the gdb.dwarf2 tests on an x86 machine (gcc45).
* lib/dwarf.exp (cu, tu): Handle addr_size of "default". Change
default addr_size.
* lib/gdb.exp (is_64_target): New gdb_caching_proc.
---
gdb/testsuite/lib/dwarf.exp | 26 ++++++++++++++++++++------
gdb/testsuite/lib/gdb.exp | 28 ++++++++++++++++++++++++++++
2 files changed, 48 insertions(+), 6 deletions(-)
diff --git a/gdb/testsuite/lib/dwarf.exp b/gdb/testsuite/lib/dwarf.exp
index 5b19bb8..1d3eb03 100644
--- a/gdb/testsuite/lib/dwarf.exp
+++ b/gdb/testsuite/lib/dwarf.exp
@@ -684,8 +684,8 @@ namespace eval Dwarf {
# default = 0 (32-bit)
# version n - DWARF version number to emit
# default = 4
- # addr_size n - the size of addresses, 32 or 64
- # default = 64
+ # addr_size n - the size of addresses, 32, 64, or default
+ # default = default
# fission 0|1 - boolean indicating if generating Fission debug info
# default = 0
# BODY is Tcl code that emits the DIEs which make up the body of
@@ -702,7 +702,7 @@ namespace eval Dwarf {
# Establish the defaults.
set is_64 0
set _cu_version 4
- set _cu_addr_size 8
+ set _cu_addr_size default
set fission 0
set section ".debug_info"
set _abbrev_section ".debug_abbrev"
@@ -716,6 +716,13 @@ namespace eval Dwarf {
default { error "unknown option $name" }
}
}
+ if {$_cu_addr_size == "default"} {
+ if {[is_64_target]} {
+ set _cu_addr_size 8
+ } else {
+ set _cu_addr_size 4
+ }
+ }
set _cu_offset_size [expr { $is_64 ? 8 : 4 }]
if { $fission } {
set section ".debug_info.dwo"
@@ -767,8 +774,8 @@ namespace eval Dwarf {
# default = 0 (32-bit)
# version n - DWARF version number to emit
# default = 4
- # addr_size n - the size of addresses, 32 or 64
- # default = 64
+ # addr_size n - the size of addresses, 32, 64, or default
+ # default = default
# fission 0|1 - boolean indicating if generating Fission debug info
# default = 0
# SIGNATURE is the 64-bit signature of the type.
@@ -788,7 +795,7 @@ namespace eval Dwarf {
# Establish the defaults.
set is_64 0
set _cu_version 4
- set _cu_addr_size 8
+ set _cu_addr_size default
set fission 0
set section ".debug_types"
set _abbrev_section ".debug_abbrev"
@@ -802,6 +809,13 @@ namespace eval Dwarf {
default { error "unknown option $name" }
}
}
+ if {$_cu_addr_size == "default"} {
+ if {[is_64_target]} {
+ set _cu_addr_size 8
+ } else {
+ set _cu_addr_size 4
+ }
+ }
set _cu_offset_size [expr { $is_64 ? 8 : 4 }]
if { $fission } {
set section ".debug_types.dwo"
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 1a1fac2..ab41da0 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -1854,6 +1854,34 @@ gdb_caching_proc is_lp64_target {
return 1
}
+# Return 1 if target has 64 bit addresses.
+# This cannot be decided simply from looking at the target string,
+# as it might depend on externally passed compiler options like -m64.
+gdb_caching_proc is_64_target {
+ set me "is_64_target"
+
+ set src [standard_temp_file is64[pid].c]
+ set obj [standard_temp_file is64[pid].o]
+
+ set f [open $src "w"]
+ puts $f "int function(void) { return 3; }"
+ puts $f "int dummy\[sizeof (&function) == 8 ? 1 : -1\];"
+ close $f
+
+ verbose "$me: compiling testfile $src" 2
+ set lines [gdb_compile $src $obj object {quiet}]
+ file delete $src
+ file delete $obj
+
+ if ![string match "" $lines] then {
+ verbose "$me: testfile compilation failed, returning 0" 2
+ return 0
+ }
+
+ verbose "$me: returning 1" 2
+ return 1
+}
+
# Return 1 if target has x86_64 registers - either amd64 or x32.
# x32 target identifies as x86_64-*-linux*, therefore it cannot be determined
# just from the target string.
--
1.8.1.4
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] fix dwz.exp on 32-bit targets
2013-08-21 15:33 [PATCH] fix dwz.exp on 32-bit targets Tom Tromey
@ 2013-08-22 13:54 ` Tom Tromey
2013-08-27 14:36 ` dwz.exp FAIL on CentOS-5-i386 [Re: [PATCH] fix dwz.exp on 32-bit targets] Jan Kratochvil
0 siblings, 1 reply; 3+ messages in thread
From: Tom Tromey @ 2013-08-22 13:54 UTC (permalink / raw)
To: gdb-patches
>>>>> "Tom" == Tom Tromey <tromey@redhat.com> writes:
Tom> This fixes dwz.exp on 32-bit targets. It does so by introducing a new
Tom> "default" setting for the address size in the DWARF assembler.
This is blocking Yao, so I'm putting it in now.
Tom
^ permalink raw reply [flat|nested] 3+ messages in thread
* dwz.exp FAIL on CentOS-5-i386 [Re: [PATCH] fix dwz.exp on 32-bit targets]
2013-08-22 13:54 ` Tom Tromey
@ 2013-08-27 14:36 ` Jan Kratochvil
0 siblings, 0 replies; 3+ messages in thread
From: Jan Kratochvil @ 2013-08-27 14:36 UTC (permalink / raw)
To: Tom Tromey; +Cc: gdb-patches
On Thu, 22 Aug 2013 15:54:02 +0200, Tom Tromey wrote:
> >>>>> "Tom" == Tom Tromey <tromey@redhat.com> writes:
>
> Tom> This fixes dwz.exp on 32-bit targets. It does so by introducing a new
> Tom> "default" setting for the address size in the DWARF assembler.
>
> This is blocking Yao, so I'm putting it in now.
Only on CentOS-5 (not on CentOS-6) in x86_64-m32 or i386 mode I get:
+PASS: gdb.dwarf2/dwz.exp: p other_int
+FAIL: gdb.dwarf2/dwz.exp: p the_int
p the_int^M
Expected: $2 = 23^M
Expected: (gdb) PASS: gdb.dwarf2/dwz.exp: p the_int
Actual: $2 = 99^M
Actual: (gdb) FAIL: gdb.dwarf2/dwz.exp: p the_int
Jan
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-08-21 15:33 [PATCH] fix dwz.exp on 32-bit targets Tom Tromey
2013-08-22 13:54 ` Tom Tromey
2013-08-27 14:36 ` dwz.exp FAIL on CentOS-5-i386 [Re: [PATCH] fix dwz.exp on 32-bit targets] Jan Kratochvil
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