On Mon, Jul 24, 2000 at 09:05:10AM -0400, Pat O'Rourke wrote:
> the offset of the task_struct's ptrace field as 104, or right after the
> 'processor' field. This appears incorrect because the 'ptrace' field is
> actually after 'need_resched'. This patch will adjust the definition of
> TASK_PTRACE accordingly.
Damn. Thanks.
So the `ptrace' field was silently moved since test1-ac...
> +#define TASK_PTRACE 48
> #define TASK_PROCESSOR 100
> -#define TASK_PTRACE 104
I think we should better fix the asm_offsets stuff, just to
prevent such a mess in future.
Ivan.
diff -urN 240t5p4/arch/alpha/kernel/Makefile linux/arch/alpha/kernel/Makefile
--- 240t5p4/arch/alpha/kernel/Makefile Sun Jun 25 14:24:10 2000
+++ linux/arch/alpha/kernel/Makefile Tue Jul 25 13:16:41 2000
@@ -140,7 +140,7 @@
O_OBJS += $(L_TARGET)
-all: kernel.o head.o
+all: asm_offsets kernel.o head.o
asm_offsets: check_asm
./check_asm > $(TOPDIR)/include/asm-alpha/asm_offsets.h
@@ -150,5 +150,6 @@
clean::
rm -f check_asm
+ rm -f $(TOPDIR)/include/asm-alpha/asm_offsets.h
include $(TOPDIR)/Rules.make
diff -urN 240t5p4/arch/alpha/kernel/check_asm.c linux/arch/alpha/kernel/check_asm.c
--- 240t5p4/arch/alpha/kernel/check_asm.c Sun Nov 28 02:42:54 1999
+++ linux/arch/alpha/kernel/check_asm.c Tue Jul 25 12:38:39 2000
@@ -19,6 +19,10 @@
(long)offsetof(struct task_struct, exec_domain));
printf("#define TASK_NEED_RESCHED %ld\n",
(long)offsetof(struct task_struct, need_resched));
+ printf("#define TASK_PTRACE %ld\n",
+ (long)offsetof(struct task_struct, ptrace));
+ printf("#define TASK_PROCESSOR %ld\n",
+ (long)offsetof(struct task_struct, processor));
printf("#define TASK_SIZE %ld\n", sizeof(struct task_struct));
printf("#define STACK_SIZE %ld\n", sizeof(union task_union));
@@ -26,6 +30,9 @@
(long)offsetof(struct alpha_machine_vector, hae_cache));
printf("#define HAE_REG %ld\n",
(long)offsetof(struct alpha_machine_vector, hae_register));
+
+ printf("#define PT_PTRACED 0x%08x\n", PT_PTRACED);
+ printf("#define CLONE_VM 0x%08x\n", CLONE_VM);
printf("#endif /* __ASM_OFFSETS_H__ */\n");
return 0;
diff -urN 240t5p4/arch/alpha/kernel/entry.S linux/arch/alpha/kernel/entry.S
--- 240t5p4/arch/alpha/kernel/entry.S Sun Jun 25 14:24:10 2000
+++ linux/arch/alpha/kernel/entry.S Tue Jul 25 12:38:14 2000
@@ -6,42 +6,18 @@
#include <linux/config.h>
#include <asm/system.h>
+#include <asm/asm_offsets.h>
#define SIGCHLD 20
#define NR_SYSCALLS 377
/*
- * These offsets must match with alpha_mv in <asm/machvec.h>.
- */
-#define HAE_CACHE 0
-#define HAE_REG 8
-
-/*
* stack offsets
*/
#define SP_OFF 184
#define SWITCH_STACK_SIZE 320
-
-/*
- * task structure offsets
- */
-#define TASK_STATE 0
-#define TASK_FLAGS 8
-#define TASK_SIGPENDING 16
-#define TASK_ADDR_LIMIT 24
-#define TASK_EXEC_DOMAIN 32
-#define TASK_NEED_RESCHED 40
-#define TASK_PROCESSOR 100
-#define TASK_PTRACE 104
-
-/*
- * task flags (must match include/linux/sched.h):
- */
-#define PT_PTRACED 0x00000001
-
-#define CLONE_VM 0x00000100
/*
* This defines the normal kernel pt-regs layout.
diff -urN 240t5p4/include/asm-alpha/asm_offsets.h linux/include/asm-alpha/asm_offsets.h
--- 240t5p4/include/asm-alpha/asm_offsets.h Mon Oct 12 22:40:12 1998
+++ linux/include/asm-alpha/asm_offsets.h Thu Jan 1 03:00:00 1970
@@ -1,13 +0,0 @@
-#ifndef __ASM_OFFSETS_H__
-#define __ASM_OFFSETS_H__
-#define TASK_STATE 0
-#define TASK_FLAGS 8
-#define TASK_SIGPENDING 16
-#define TASK_ADDR_LIMIT 24
-#define TASK_EXEC_DOMAIN 32
-#define TASK_NEED_RESCHED 40
-#define TASK_SIZE 1096
-#define STACK_SIZE 16384
-#define HAE_CACHE 0
-#define HAE_REG 8
-#endif /* __ASM_OFFSETS_H__ */
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