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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/ia64/kernel/entry.h
downloadconfigs-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
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/ia64/kernel/entry.h')
-rw-r--r--arch/ia64/kernel/entry.h82
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/ia64/kernel/entry.h b/arch/ia64/kernel/entry.h
new file mode 100644
index 00000000000..6d4ecec989b
--- /dev/null
+++ b/arch/ia64/kernel/entry.h
@@ -0,0 +1,82 @@
+#include <linux/config.h>
+
+/*
+ * Preserved registers that are shared between code in ivt.S and
+ * entry.S. Be careful not to step on these!
+ */
+#define PRED_LEAVE_SYSCALL 1 /* TRUE iff leave from syscall */
+#define PRED_KERNEL_STACK 2 /* returning to kernel-stacks? */
+#define PRED_USER_STACK 3 /* returning to user-stacks? */
+#define PRED_SYSCALL 4 /* inside a system call? */
+#define PRED_NON_SYSCALL 5 /* complement of PRED_SYSCALL */
+
+#ifdef __ASSEMBLY__
+# define PASTE2(x,y) x##y
+# define PASTE(x,y) PASTE2(x,y)
+
+# define pLvSys PASTE(p,PRED_LEAVE_SYSCALL)
+# define pKStk PASTE(p,PRED_KERNEL_STACK)
+# define pUStk PASTE(p,PRED_USER_STACK)
+# define pSys PASTE(p,PRED_SYSCALL)
+# define pNonSys PASTE(p,PRED_NON_SYSCALL)
+#endif
+
+#define PT(f) (IA64_PT_REGS_##f##_OFFSET)
+#define SW(f) (IA64_SWITCH_STACK_##f##_OFFSET)
+
+#define PT_REGS_SAVES(off) \
+ .unwabi 3, 'i'; \
+ .fframe IA64_PT_REGS_SIZE+16+(off); \
+ .spillsp rp, PT(CR_IIP)+16+(off); \
+ .spillsp ar.pfs, PT(CR_IFS)+16+(off); \
+ .spillsp ar.unat, PT(AR_UNAT)+16+(off); \
+ .spillsp ar.fpsr, PT(AR_FPSR)+16+(off); \
+ .spillsp pr, PT(PR)+16+(off);
+
+#define PT_REGS_UNWIND_INFO(off) \
+ .prologue; \
+ PT_REGS_SAVES(off); \
+ .body
+
+#define SWITCH_STACK_SAVES(off) \
+ .savesp ar.unat,SW(CALLER_UNAT)+16+(off); \
+ .savesp ar.fpsr,SW(AR_FPSR)+16+(off); \
+ .spillsp f2,SW(F2)+16+(off); .spillsp f3,SW(F3)+16+(off); \
+ .spillsp f4,SW(F4)+16+(off); .spillsp f5,SW(F5)+16+(off); \
+ .spillsp f16,SW(F16)+16+(off); .spillsp f17,SW(F17)+16+(off); \
+ .spillsp f18,SW(F18)+16+(off); .spillsp f19,SW(F19)+16+(off); \
+ .spillsp f20,SW(F20)+16+(off); .spillsp f21,SW(F21)+16+(off); \
+ .spillsp f22,SW(F22)+16+(off); .spillsp f23,SW(F23)+16+(off); \
+ .spillsp f24,SW(F24)+16+(off); .spillsp f25,SW(F25)+16+(off); \
+ .spillsp f26,SW(F26)+16+(off); .spillsp f27,SW(F27)+16+(off); \
+ .spillsp f28,SW(F28)+16+(off); .spillsp f29,SW(F29)+16+(off); \
+ .spillsp f30,SW(F30)+16+(off); .spillsp f31,SW(F31)+16+(off); \
+ .spillsp r4,SW(R4)+16+(off); .spillsp r5,SW(R5)+16+(off); \
+ .spillsp r6,SW(R6)+16+(off); .spillsp r7,SW(R7)+16+(off); \
+ .spillsp b0,SW(B0)+16+(off); .spillsp b1,SW(B1)+16+(off); \
+ .spillsp b2,SW(B2)+16+(off); .spillsp b3,SW(B3)+16+(off); \
+ .spillsp b4,SW(B4)+16+(off); .spillsp b5,SW(B5)+16+(off); \
+ .spillsp ar.pfs,SW(AR_PFS)+16+(off); .spillsp ar.lc,SW(AR_LC)+16+(off); \
+ .spillsp @priunat,SW(AR_UNAT)+16+(off); \
+ .spillsp ar.rnat,SW(AR_RNAT)+16+(off); \
+ .spillsp ar.bspstore,SW(AR_BSPSTORE)+16+(off); \
+ .spillsp pr,SW(PR)+16+(off))
+
+#define DO_SAVE_SWITCH_STACK \
+ movl r28=1f; \
+ ;; \
+ .fframe IA64_SWITCH_STACK_SIZE; \
+ adds sp=-IA64_SWITCH_STACK_SIZE,sp; \
+ mov.ret.sptk b7=r28,1f; \
+ SWITCH_STACK_SAVES(0); \
+ br.cond.sptk.many save_switch_stack; \
+1:
+
+#define DO_LOAD_SWITCH_STACK \
+ movl r28=1f; \
+ ;; \
+ invala; \
+ mov.ret.sptk b7=r28,1f; \
+ br.cond.sptk.many load_switch_stack; \
+1: .restore sp; \
+ adds sp=IA64_SWITCH_STACK_SIZE,sp