* [PATCH] parisc: Add compile-time check when adding new syscalls
@ 2015-03-14 20:34 Helge Deller
2015-03-15 20:32 ` [PATCH, v2] " Helge Deller
0 siblings, 1 reply; 2+ messages in thread
From: Helge Deller @ 2015-03-14 20:34 UTC (permalink / raw)
To: linux-parisc, James Bottomley, John David Anglin
Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 5a8997d..802f807 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -41,20 +41,25 @@
#define ENTRY_UHOH(_name_) .dword sys32_##unimplemented
#define ENTRY_OURS(_name_) .dword parisc_##_name_
#define ENTRY_COMP(_name_) .dword compat_sys_##_name_
+#define SYSCALLTABLE_NAME syscall_table_compat
#elif defined(CONFIG_64BIT) && defined(SYSCALL_TABLE_64BIT)
#define ENTRY_SAME(_name_) .dword sys_##_name_
#define ENTRY_DIFF(_name_) .dword sys_##_name_
#define ENTRY_UHOH(_name_) .dword sys_##_name_
#define ENTRY_OURS(_name_) .dword sys_##_name_
#define ENTRY_COMP(_name_) .dword sys_##_name_
+#define SYSCALLTABLE_NAME syscall_table_64bit
#else
#define ENTRY_SAME(_name_) .word sys_##_name_
#define ENTRY_DIFF(_name_) .word sys_##_name_
#define ENTRY_UHOH(_name_) .word sys_##_name_
#define ENTRY_OURS(_name_) .word parisc_##_name_
#define ENTRY_COMP(_name_) .word sys_##_name_
+#define SYSCALLTABLE_NAME syscall_table_32bit
#endif
+ .local SYSCALLTABLE_NAME
+SYSCALLTABLE_NAME:
ENTRY_SAME(restart_syscall) /* 0 */
ENTRY_SAME(exit)
ENTRY_SAME(fork_wrapper)
@@ -439,8 +444,21 @@
ENTRY_SAME(bpf)
ENTRY_COMP(execveat)
+
+ .size SYSCALLTABLE_NAME, . - SYSCALLTABLE_NAME
+ .type SYSCALLTABLE_NAME, @object
+
+#if defined(CONFIG_64BIT)
+.ifne (. - SYSCALLTABLE_NAME) - (__NR_Linux_syscalls * 8)
+#else /* !defined(CONFIG_64BIT) */
+.ifne (. - SYSCALLTABLE_NAME) - (__NR_Linux_syscalls * 4)
+#endif
+.error "syscall table not in sync with value of __NR_Linux_syscalls"
+.endif
+
/* Nothing yet */
+#undef SYSCALLTABLE_NAME
#undef ENTRY_SAME
#undef ENTRY_DIFF
#undef ENTRY_UHOH
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH, v2] parisc: Add compile-time check when adding new syscalls
2015-03-14 20:34 [PATCH] parisc: Add compile-time check when adding new syscalls Helge Deller
@ 2015-03-15 20:32 ` Helge Deller
0 siblings, 0 replies; 2+ messages in thread
From: Helge Deller @ 2015-03-15 20:32 UTC (permalink / raw)
To: linux-parisc, James Bottomley, John David Anglin
Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 5a8997d..0959fcc 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -55,6 +55,7 @@
#define ENTRY_COMP(_name_) .word sys_##_name_
#endif
+99:
ENTRY_SAME(restart_syscall) /* 0 */
ENTRY_SAME(exit)
ENTRY_SAME(fork_wrapper)
@@ -439,6 +440,15 @@
ENTRY_SAME(bpf)
ENTRY_COMP(execveat)
+
+#if defined(CONFIG_64BIT)
+.ifne (. - 99b) - (__NR_Linux_syscalls * 8)
+#else /* !defined(CONFIG_64BIT) */
+.ifne (. - 99b) - (__NR_Linux_syscalls * 4)
+#endif
+.error "size of syscall table does not fit value of __NR_Linux_syscalls"
+.endif
+
/* Nothing yet */
#undef ENTRY_SAME
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2015-03-14 20:34 [PATCH] parisc: Add compile-time check when adding new syscalls Helge Deller
2015-03-15 20:32 ` [PATCH, v2] " Helge Deller
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