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Don't pass -m64 to libcc1 on aarch64-linux.

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Nowadays, if we use "compile" on aarch64-linux, we'll get the following
error,

(gdb) compile code -- ;
aarch64-none-linux-gnu-gcc: error: unrecognized command line option '-m64'

because the default gcc_target_options returns "-m64" and
"-mcmodel=large", neither is useful to aarch64-linux.

gdb:

2018-01-17  Yao Qi  <yao.qi@linaro.org>

	* aarch64-linux-tdep.c (aarch64_linux_gcc_target_options): New
	function.
	(aarch64_linux_init_abi): Install it to gdbarch hook
	gcc_target_options.
This commit is contained in:
Yao Qi 2018-01-17 12:48:52 +00:00
parent d8447b6b9f
commit 7045b1ca73
2 changed files with 18 additions and 0 deletions
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7
gdb/ChangeLog
View File

@ -1,3 +1,10 @@
2018-01-17 Yao Qi <yao.qi@linaro.org>
* aarch64-linux-tdep.c (aarch64_linux_gcc_target_options): New
function.
(aarch64_linux_init_abi): Install it to gdbarch hook
gcc_target_options.
2018-01-15 Pedro Alves <palves@redhat.com>
* common/signals-state-save-restore.c

11
gdb/aarch64-linux-tdep.c
View File

@ -1001,6 +1001,15 @@ aarch64_linux_syscall_record (struct regcache *regcache,
return 0;
}
/* Implement the "gcc_target_options" gdbarch method. */
static char *
aarch64_linux_gcc_target_options (struct gdbarch *gdbarch)
{
/* GCC doesn't know "-m64". */
return NULL;
}
static void
aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
@ -1225,6 +1234,8 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
set_gdbarch_displaced_step_location (gdbarch, linux_displaced_step_location);
set_gdbarch_displaced_step_hw_singlestep (gdbarch,
aarch64_displaced_step_hw_singlestep);
set_gdbarch_gcc_target_options (gdbarch, aarch64_linux_gcc_target_options);
}
void