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Remove the old sanity check of sigcontext offsets for NetBSD/i386

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NetBSD switched to ucontext, back in 2003 and the sigcontext code
is no longer available for users, except for legacy compat layers.

This code was not available anyway as the pre-processor check
was probably never operational and buildable on NetBSD. The code
inside it does not compile.

Meanwhile, move the offset variable into the ifdef goards and avoid
the error about unused variable.

../../gdb/i386-bsd-nat.c: In function 'void _initialize_i386bsd_nat()':
../../gdb/i386-bsd-nat.c:347:7: error: unused variable 'offset' [-Werror=unused-variable]
  347 |   int offset;
      |       ^~~~~~
cc1plus: all warnings being treated as errors

gdb/ChangeLog:

	* i386-bsd-nat.c (_initialize_i386bsd_nat): Update.
	* i386-nbsd-tdep.c (i386nbsd_sc_reg_offset): Now static.
This commit is contained in:
Kamil Rytarowski 2020-09-23 05:54:19 +02:00
parent 8b667faedf
commit 6ff330351e
3 changed files with 7 additions and 6 deletions
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5
gdb/ChangeLog
View File

@ -1,3 +1,8 @@
2020-10-01 Kamil Rytarowski <n54@gmx.com>
* i386-bsd-nat.c (_initialize_i386bsd_nat): Update.
* i386-nbsd-tdep.c (i386nbsd_sc_reg_offset): Now static.
2020-10-01 Kamil Rytarowski <n54@gmx.com>
* i386-bsd-nat.c: Include "x86-bsd-nat.h".

6
gdb/i386-bsd-nat.c
View File

@ -344,8 +344,6 @@ void _initialize_i386bsd_nat ();
void
_initialize_i386bsd_nat ()
{
int offset;
/* To support the recognition of signal handlers, i386-bsd-tdep.c
hardcodes some constants. Inclusion of this file means that we
are compiling a native debugger, which means that we can use the
@ -356,8 +354,6 @@ _initialize_i386bsd_nat ()
#define SC_REG_OFFSET i386fbsd4_sc_reg_offset
#elif defined (__FreeBSD_version) && __FreeBSD_version >= 300005
#define SC_REG_OFFSET i386fbsd_sc_reg_offset
#elif defined (NetBSD) || defined (__NetBSD_Version__)
#define SC_REG_OFFSET i386nbsd_sc_reg_offset
#elif defined (OpenBSD)
#define SC_REG_OFFSET i386obsd_sc_reg_offset
#endif
@ -376,7 +372,7 @@ _initialize_i386bsd_nat ()
/* Override the default value for the offset of the program counter
in the sigcontext structure. */
offset = offsetof (struct sigcontext, sc_pc);
int offset = offsetof (struct sigcontext, sc_pc);
if (SC_PC_OFFSET != offset)
{

2
gdb/i386-nbsd-tdep.c
View File

@ -55,7 +55,7 @@ static int i386nbsd_r_reg_offset[] =
};
/* From <machine/signal.h>. */
int i386nbsd_sc_reg_offset[] =
static int i386nbsd_sc_reg_offset[] =
{
10 * 4, /* %eax */
9 * 4, /* %ecx */