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author | mostang.com!davidm <mostang.com!davidm> | 2004-05-04 22:16:57 +0000 |
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committer | mostang.com!davidm <mostang.com!davidm> | 2004-05-04 22:16:57 +0000 |
commit | aa00843a307d8c9620b0762f173131cedbb3d6c7 (patch) | |
tree | a68fe98297998ac6ae17b42aac6ee309d0e68789 /include | |
parent | 0ef8414cd9fa9d95ef89e74574749e5292ea124d (diff) | |
download | libunwind-aa00843a307d8c9620b0762f173131cedbb3d6c7.tar.gz |
Rename: src/ia64/rse.h -> include/ia64/rse.h
(Logical change 1.221)
Diffstat (limited to 'include')
-rw-r--r-- | include/ia64/rse.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/include/ia64/rse.h b/include/ia64/rse.h index e69de29b..928f1a63 100644 --- a/include/ia64/rse.h +++ b/include/ia64/rse.h @@ -0,0 +1,69 @@ +/* + * Copyright (C) 1998, 1999, 2002, 2003 Hewlett-Packard Co + * David Mosberger-Tang <davidm@hpl.hp.com> + * + * 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). + */ +#ifndef RSE_H +#define RSE_H + +#include "internal.h" + +#include <inttypes.h> + +static inline uint64_t +ia64_rse_slot_num (uint64_t addr) +{ + return (addr >> 3) & 0x3f; +} + +/* + * Return TRUE if ADDR is the address of an RNAT slot. + */ +static inline uint64_t +ia64_rse_is_rnat_slot (uint64_t 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 uint64_t +ia64_rse_rnat_addr (uint64_t slot_addr) +{ + return slot_addr | (0x3f << 3); +} + +/* + * Calcuate 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 uint64_t +ia64_rse_num_regs (uint64_t bspstore, uint64_t bsp) +{ + uint64_t slots = (bsp - bspstore) >> 3; + + 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 uint64_t +ia64_rse_skip_regs (uint64_t 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) << 3); +} + +#endif /* RSE_H */ |