[v4,1/3] ia64: Always define IA64_USE_NEW_STUB as a flag macro
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Commit Message
And keep the previous definition if it exists. This allows
disabling IA64_USE_NEW_STUB while keeping USE_DL_SYSINFO defined.
---
v4: Unchanged.
v3: Fix “statup” typo. Do not use libpthread and librt in conditional.
sysdeps/unix/sysv/linux/ia64/brk.c | 5 ++---
sysdeps/unix/sysv/linux/ia64/sysdep.h | 23 +++++++++++++----------
2 files changed, 15 insertions(+), 13 deletions(-)
base-commit: c1b68685d438373efe64e5f076f4215723004dfb
Comments
On 05/05/2022 12:06, Florian Weimer via Libc-alpha wrote:
> And keep the previous definition if it exists. This allows
> disabling IA64_USE_NEW_STUB while keeping USE_DL_SYSINFO defined.
LGTM, thanks.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
> ---
> v4: Unchanged.
> v3: Fix “statup” typo. Do not use libpthread and librt in conditional.
>
> sysdeps/unix/sysv/linux/ia64/brk.c | 5 ++---
> sysdeps/unix/sysv/linux/ia64/sysdep.h | 23 +++++++++++++----------
> 2 files changed, 15 insertions(+), 13 deletions(-)
>
> diff --git a/sysdeps/unix/sysv/linux/ia64/brk.c b/sysdeps/unix/sysv/linux/ia64/brk.c
> index 65142aeae9..d2135b74fc 100644
> --- a/sysdeps/unix/sysv/linux/ia64/brk.c
> +++ b/sysdeps/unix/sysv/linux/ia64/brk.c
> @@ -16,7 +16,6 @@
> License along with the GNU C Library; if not, see
> <https://www.gnu.org/licenses/>. */
>
> -#include <dl-sysdep.h>
> -/* brk is used by statup before TCB is properly set. */
> -#undef USE_DL_SYSINFO
> +/* brk is used by startup before TCB is properly set up. */
> +#define IA64_USE_NEW_STUB 0
> #include <sysdeps/unix/sysv/linux/brk.c>
> diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep.h b/sysdeps/unix/sysv/linux/ia64/sysdep.h
> index 193ecee023..14adbdf4ff 100644
> --- a/sysdeps/unix/sysv/linux/ia64/sysdep.h
> +++ b/sysdeps/unix/sysv/linux/ia64/sysdep.h
> @@ -44,12 +44,15 @@
> #undef SYS_ify
> #define SYS_ify(syscall_name) __NR_##syscall_name
>
> -#if defined USE_DL_SYSINFO \
> - && (IS_IN (libc) \
> - || IS_IN (libpthread) || IS_IN (librt))
> -# define IA64_USE_NEW_STUB
> -#else
> -# undef IA64_USE_NEW_STUB
> +#ifndef IA64_USE_NEW_STUB
> +# if defined USE_DL_SYSINFO && IS_IN (libc)
> +# define IA64_USE_NEW_STUB 1
> +# else
> +# define IA64_USE_NEW_STUB 0
> +# endif
> +#endif
> +#if IA64_USE_NEW_STUB && !USE_DL_SYSINFO
> +# error IA64_USE_NEW_STUB needs USE_DL_SYSINFO
> #endif
>
> #ifdef __ASSEMBLER__
> @@ -101,7 +104,7 @@
> mov r15=num; \
> break __IA64_BREAK_SYSCALL
>
> -#ifdef IA64_USE_NEW_STUB
> +#if IA64_USE_NEW_STUB
> # ifdef SHARED
> # define DO_CALL(num) \
> .prologue; \
> @@ -185,7 +188,7 @@
> (non-negative) errno on error or the return value on success.
> */
>
> -#ifdef IA64_USE_NEW_STUB
> +#if IA64_USE_NEW_STUB
>
> # define INTERNAL_SYSCALL_NCS(name, nr, args...) \
> ({ \
> @@ -277,7 +280,7 @@
> #define ASM_OUTARGS_5 ASM_OUTARGS_4, "=r" (_out4)
> #define ASM_OUTARGS_6 ASM_OUTARGS_5, "=r" (_out5)
>
> -#ifdef IA64_USE_NEW_STUB
> +#if IA64_USE_NEW_STUB
> #define ASM_ARGS_0
> #define ASM_ARGS_1 ASM_ARGS_0, "4" (_out0)
> #define ASM_ARGS_2 ASM_ARGS_1, "5" (_out1)
> @@ -313,7 +316,7 @@
> /* Branch registers. */ \
> "b6"
>
> -#ifdef IA64_USE_NEW_STUB
> +#if IA64_USE_NEW_STUB
> # define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON
> #else
> # define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON , "b7"
>
> base-commit: c1b68685d438373efe64e5f076f4215723004dfb
@@ -16,7 +16,6 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <dl-sysdep.h>
-/* brk is used by statup before TCB is properly set. */
-#undef USE_DL_SYSINFO
+/* brk is used by startup before TCB is properly set up. */
+#define IA64_USE_NEW_STUB 0
#include <sysdeps/unix/sysv/linux/brk.c>
@@ -44,12 +44,15 @@
#undef SYS_ify
#define SYS_ify(syscall_name) __NR_##syscall_name
-#if defined USE_DL_SYSINFO \
- && (IS_IN (libc) \
- || IS_IN (libpthread) || IS_IN (librt))
-# define IA64_USE_NEW_STUB
-#else
-# undef IA64_USE_NEW_STUB
+#ifndef IA64_USE_NEW_STUB
+# if defined USE_DL_SYSINFO && IS_IN (libc)
+# define IA64_USE_NEW_STUB 1
+# else
+# define IA64_USE_NEW_STUB 0
+# endif
+#endif
+#if IA64_USE_NEW_STUB && !USE_DL_SYSINFO
+# error IA64_USE_NEW_STUB needs USE_DL_SYSINFO
#endif
#ifdef __ASSEMBLER__
@@ -101,7 +104,7 @@
mov r15=num; \
break __IA64_BREAK_SYSCALL
-#ifdef IA64_USE_NEW_STUB
+#if IA64_USE_NEW_STUB
# ifdef SHARED
# define DO_CALL(num) \
.prologue; \
@@ -185,7 +188,7 @@
(non-negative) errno on error or the return value on success.
*/
-#ifdef IA64_USE_NEW_STUB
+#if IA64_USE_NEW_STUB
# define INTERNAL_SYSCALL_NCS(name, nr, args...) \
({ \
@@ -277,7 +280,7 @@
#define ASM_OUTARGS_5 ASM_OUTARGS_4, "=r" (_out4)
#define ASM_OUTARGS_6 ASM_OUTARGS_5, "=r" (_out5)
-#ifdef IA64_USE_NEW_STUB
+#if IA64_USE_NEW_STUB
#define ASM_ARGS_0
#define ASM_ARGS_1 ASM_ARGS_0, "4" (_out0)
#define ASM_ARGS_2 ASM_ARGS_1, "5" (_out1)
@@ -313,7 +316,7 @@
/* Branch registers. */ \
"b6"
-#ifdef IA64_USE_NEW_STUB
+#if IA64_USE_NEW_STUB
# define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON
#else
# define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON , "b7"