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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc/kernel/asm-offsets.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/sparc/kernel/asm-offsets.c')
-rw-r--r--arch/sparc/kernel/asm-offsets.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/sparc/kernel/asm-offsets.c b/arch/sparc/kernel/asm-offsets.c
new file mode 100644
index 00000000000..1f55231f07d
--- /dev/null
+++ b/arch/sparc/kernel/asm-offsets.c
@@ -0,0 +1,45 @@
+/*
+ * This program is used to generate definitions needed by
+ * assembly language modules.
+ *
+ * We use the technique used in the OSF Mach kernel code:
+ * generate asm statements containing #defines,
+ * compile this file to assembler, and then extract the
+ * #defines from the assembly-language output.
+ *
+ * On sparc, thread_info data is static and TI_XXX offsets are computed by hand.
+ */
+
+#include <linux/config.h>
+#include <linux/sched.h>
+// #include <linux/mm.h>
+
+#define DEFINE(sym, val) \
+ asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define BLANK() asm volatile("\n->" : : )
+
+int foo(void)
+{
+ DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
+ BLANK();
+ /* XXX This is the stuff for sclow.S, kill it. */
+ DEFINE(AOFF_task_pid, offsetof(struct task_struct, pid));
+ DEFINE(AOFF_task_uid, offsetof(struct task_struct, uid));
+ DEFINE(AOFF_task_gid, offsetof(struct task_struct, gid));
+ DEFINE(AOFF_task_euid, offsetof(struct task_struct, euid));
+ DEFINE(AOFF_task_egid, offsetof(struct task_struct, egid));
+ /* DEFINE(THREAD_INFO, offsetof(struct task_struct, thread_info)); */
+ DEFINE(ASIZ_task_uid, sizeof(current->uid));
+ DEFINE(ASIZ_task_gid, sizeof(current->gid));
+ DEFINE(ASIZ_task_euid, sizeof(current->euid));
+ DEFINE(ASIZ_task_egid, sizeof(current->egid));
+ BLANK();
+ DEFINE(AOFF_thread_fork_kpsr,
+ offsetof(struct thread_struct, fork_kpsr));
+ BLANK();
+ DEFINE(AOFF_mm_context, offsetof(struct mm_struct, context));
+
+ /* DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); */
+ return 0;
+}