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| author | Richard Henderson <rth@redhat.com> | 2018-01-03 15:14:12 +0000 |
|---|---|---|
| committer | Pedro Alves <palves@redhat.com> | 2018-01-03 15:14:12 +0000 |
| commit | bd496067387a9c89a7e62bbba76e784634936932 (patch) | |
| tree | 72f60034d605d510f0e06b1b558aacf91b7d11cf /gdb/nat | |
| parent | 8f108421329f4318c4467f751c270413119395d4 (diff) | |
| download | gdb-bd496067387a9c89a7e62bbba76e784634936932.zip gdb-bd496067387a9c89a7e62bbba76e784634936932.tar.gz gdb-bd496067387a9c89a7e62bbba76e784634936932.tar.bz2 | |
Fix PR19061, gdb hangs/spins-on-cpu when debugging any program on Alpha
This fixes PR19061, where gdb hangs/spins-on-cpu when debugging any
program on Alpha.
(This patch is Uros' forward port of the patch from comment #5
of the PR [1].)
Patch was tested on alphaev68-linux-gnu, also tested with gcc's
testsuite, where it fixed all hangs in guality.exp and
simulate-thread.exp testcases.
[1] https://sourceware.org/bugzilla/show_bug.cgi?id=19061#c5
gdb/ChangeLog:
2018-01-03 Richard Henderson <rth@redhat.com>
Uros Bizjak <ubizjak@gmail.com>
PR gdb/19061
* alpha-tdep.c (alpha_deal_with_atomic_sequence): Change
prototype.
(alpha_software_single_step): Call alpha_deal_with_atomic_sequence
here.
(set_gdbarch_software_single_step): Set to
alpha_software_single_step.
* nat/linux-ptrace.h [__alpha__]: Define GDB_ARCH_IS_TRAP_BRKPT
and GDB_ARCH_IS_TRAP_HWBKPT.
Diffstat (limited to 'gdb/nat')
| -rw-r--r-- | gdb/nat/linux-ptrace.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gdb/nat/linux-ptrace.h b/gdb/nat/linux-ptrace.h index 5954945..8a8c4c6 100644 --- a/gdb/nat/linux-ptrace.h +++ b/gdb/nat/linux-ptrace.h @@ -155,6 +155,8 @@ struct buffer; Beginning with Linux 4.6, the MIPS port reports proper TRAP_BRKPT and TRAP_HWBKPT codes, so we also match them. + The Alpha kernel uses TRAP_BRKPT for all traps. + The generic Linux target code should use GDB_ARCH_IS_TRAP_* instead of TRAP_* to abstract out these peculiarities. */ #if defined __i386__ || defined __x86_64__ @@ -166,6 +168,9 @@ struct buffer; #elif defined __mips__ # define GDB_ARCH_IS_TRAP_BRKPT(X) ((X) == SI_KERNEL || (X) == TRAP_BRKPT) # define GDB_ARCH_IS_TRAP_HWBKPT(X) ((X) == SI_KERNEL || (X) == TRAP_HWBKPT) +#elif defined __alpha__ +# define GDB_ARCH_IS_TRAP_BRKPT(X) ((X) == TRAP_BRKPT) +# define GDB_ARCH_IS_TRAP_HWBKPT(X) ((X) == TRAP_BRKPT) #else # define GDB_ARCH_IS_TRAP_BRKPT(X) ((X) == TRAP_BRKPT) # define GDB_ARCH_IS_TRAP_HWBKPT(X) ((X) == TRAP_HWBKPT) |