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Tom de Vries 32a5aa2625 [gdb/testsuite] Fix gdb.ada/float-bits.exp for powerpc64le
On powerpc64le-linux, I run into:
...
(gdb) print 16llf#4000921fb54442d18469898cc51701b8#^M
$9 = <invalid float value>^M
(gdb) FAIL: gdb.ada/float-bits.exp: print \
  16llf#4000921fb54442d18469898cc51701b8#
...

The problem is that we're using a hex string for the 128-bit IEEE quad long
double format, but the actual long double float format is:
...
gdbarch_dump: long_double_format = floatformat_ibm_long_double_little^M
...

Fix this by using the hex string obtained by compiling test.c:
...
long double a = 5.0e+25L;
...
like so:
...
$ gcc -mlittle test.c -c -g
...
and running gdb:
...
$ gdb -q -batch test.o -ex "p /x a"
$1 = 0xc1e1c000000000004544adf4b7320335
...
and likewise for -mbig:
...
$ gdb -q -batch test.o -ex "p /x a"
$1 = 0x4544adf4b7320335c1e1c00000000000
...

Tested on powerpc64le-linux.

I excercised the case of floatformat_ibm_long_double_big by
using "set endian big" in the test-case.

Note that for this patch to work correctly, recent commit aaa79cd62b ("[gdb]
Improve printing of float formats") is required.

PR testsuite/29816
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29816
Approved-By: Tom Tromey <tom@tromey.com>
2022-12-01 07:25:04 +01:00
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gas x86/Intel: adjustment to restricted suffix derivation 2022-11-30 09:10:17 +01:00
gdb [gdb/testsuite] Fix gdb.ada/float-bits.exp for powerpc64le 2022-12-01 07:25:04 +01:00
gdbserver gdbserver: switch to right process in find_one_thread 2022-11-28 09:13:30 -05:00
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gnulib [PR build/29791] gnulib: Disable _GL_ATTRIBUTE_DEALLOC on Solaris 2022-11-20 14:55:52 +01:00
gold Re: gold: add --compress-debug-sections=zstd [PR 29641] 2022-11-11 18:05:36 +10:30
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