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gdb/1891: info all-registers or info reg register don't show double values of left (64-bit) floating registers
- From: danglin at gcc dot gnu dot org
- To: gdb-gnats at sources dot redhat dot com
- Date: 6 Mar 2005 23:53:18 -0000
- Subject: gdb/1891: info all-registers or info reg register don't show double values of left (64-bit) floating registers
- Reply-to: danglin at gcc dot gnu dot org
>Number: 1891
>Category: gdb
>Synopsis: info all-registers or info reg register don't show double values of left (64-bit) floating registers
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: change-request
>Submitter-Id: net
>Arrival-Date: Sun Mar 06 23:58:01 UTC 2005
>Closed-Date:
>Last-Modified:
>Originator: Dave Anglin
>Release: unknown-1.0
>Organization:
>Environment:
hppa1.1-hp-hpux10.20
Probably, also hpux11.
>Description:
# gdb pow.xg
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This GDB was configured as "hppa1.1-hp-hpux10.20"...
0x0000fd74 <main+60>: ldo -78(sp),r25
0x0000fd78 <main+64>: fstd fr22,8(,r19)
0x0000fd7c <main+68>: b,l 0xfb88 <_ZSt3powIdESt7complexIT_ERKS2_RKS1_>,rp
0x0000fd80 <main+72>: fstd fr23,-8(,r3)
0x0000fd84 <main+76>: fldd 0(,r4),fr22
0x0000fd88 <main+80>: fcmp,dbl,!= fr22,fr0,
0x0000fd8c <main+84>: ftest ,
(gdb) break *0x0000fd88
Breakpoint 1 at 0xfd88
(gdb) r
Starting program: /xxx/gnu/gcc-3.3/objdir/hppa1.1-hp-hpux10.20/libstdc++-v3/testsuite/pow.xg
Breakpoint 1, 0x0000fd88 in main ()
(gdb) info reg fr22
fr22 nan(0x740000) (raw 0x7ff40000)
On gdb 5.0, we get
Breakpoint 1, 0xfd88 in main ()
(gdb) info reg fr22
fr22 (single precision) NaN(0x740000)
fr22 (double precision) NaN(0x4000000000000)
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: