From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-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! --- include/asm-ia64/rse.h | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 include/asm-ia64/rse.h (limited to 'include/asm-ia64/rse.h') diff --git a/include/asm-ia64/rse.h b/include/asm-ia64/rse.h new file mode 100644 index 00000000000..02830a3b019 --- /dev/null +++ b/include/asm-ia64/rse.h @@ -0,0 +1,66 @@ +#ifndef _ASM_IA64_RSE_H +#define _ASM_IA64_RSE_H + +/* + * Copyright (C) 1998, 1999 Hewlett-Packard Co + * Copyright (C) 1998, 1999 David Mosberger-Tang + * + * Register stack engine related helper functions. This file may be + * used in applications, so be careful about the name-space and give + * some consideration to non-GNU C compilers (though __inline__ is + * fine). + */ + +static __inline__ unsigned long +ia64_rse_slot_num (unsigned long *addr) +{ + return (((unsigned long) addr) >> 3) & 0x3f; +} + +/* + * Return TRUE if ADDR is the address of an RNAT slot. + */ +static __inline__ unsigned long +ia64_rse_is_rnat_slot (unsigned long *addr) +{ + return ia64_rse_slot_num(addr) == 0x3f; +} + +/* + * Returns the address of the RNAT slot that covers the slot at + * address SLOT_ADDR. + */ +static __inline__ unsigned long * +ia64_rse_rnat_addr (unsigned long *slot_addr) +{ + return (unsigned long *) ((unsigned long) slot_addr | (0x3f << 3)); +} + +/* + * Calculate the number of registers in the dirty partition starting at BSPSTORE and + * ending at BSP. This isn't simply (BSP-BSPSTORE)/8 because every 64th slot stores + * ar.rnat. + */ +static __inline__ unsigned long +ia64_rse_num_regs (unsigned long *bspstore, unsigned long *bsp) +{ + unsigned long slots = (bsp - bspstore); + + return slots - (ia64_rse_slot_num(bspstore) + slots)/0x40; +} + +/* + * The inverse of the above: given bspstore and the number of + * registers, calculate ar.bsp. + */ +static __inline__ unsigned long * +ia64_rse_skip_regs (unsigned long *addr, long num_regs) +{ + long delta = ia64_rse_slot_num(addr) + num_regs; + + if (num_regs < 0) + delta -= 0x3e; + return addr + num_regs + delta/0x3f; +} + +#endif /* _ASM_IA64_RSE_H */ -- cgit v1.2.3