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Protect against multiple inclusion. Define IA64_UNW_DEBUG based on DEBUG. Document

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that in the UNW_LOCAL_ONLY-case, bit 2 in register save locations is unused.  If
UNW_LOCAL_ONLY is defined, define stream-lined versions of IA64_REG_LOC(),
IA64_FPREG_LOC(), ia64_acquire_unwind_info(), ia64_release_unwind_info(), ia64_get(),
ia64_put(), ia64_getfp(), and ia64_putfp().  Drop convenience macros and declarations for
ia64_glibc_{acquire,release}_unwind_info().  Add convenience macro and declaration for
ia64_local_resume().

(Logical change 1.8)
This commit is contained in:
mostang.com!davidm 2002-02-28 16:24:48 +00:00
parent 59f4f0d4c1
commit 9a2039fe01
1 changed files with 40 additions and 27 deletions
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67
src/ia64/unwind_i.h
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@ -21,6 +21,9 @@ This exception does not however invalidate any other reasons why the
executable file might be covered by the GNU General Public
License. */
#ifndef unwind_i_h
#define unwind_i_h
#define IA64_UNW_SCRIPT_CACHE
#include <memory.h>
@ -38,7 +41,10 @@ License. */
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define IA64_UNW_DEBUG 1
#ifdef DEBUG
# define IA64_UNW_DEBUG 1
#endif
#define IA64_UNW_STATS 0
#if IA64_UNW_DEBUG
@ -156,7 +162,7 @@ struct ia64_cursor
bit 0: set if location uses floating-point format.
bit 1: set if location is a NaT bit on memory stack
bit 2: set if location is a register. */
bit 2: set if location is a register (not needed for local-only). */
#define IA64_LOC_TYPE_FP (1 << 0)
#define IA64_LOC_TYPE_MEMSTK_NAT (1 << 1)
@ -168,31 +174,35 @@ struct ia64_cursor
#define IA64_MASK_LOC_TYPE(l) ((l) & ~0x7)
#define IA64_IS_FP_LOC(loc) (((loc) & IA64_LOC_TYPE_FP) != 0)
#define IA64_IS_MEMSTK_NAT(loc) (((loc) & IA64_LOC_TYPE_MEMSTK_NAT) != 0)
#define IA64_IS_REG_LOC(r) (((r) & IA64_LOC_TYPE_REG) != 0)
#define IA64_REG_LOC(r) IA64_LOC((r), IA64_LOC_TYPE_REG)
#define IA64_FPREG_LOC(r) IA64_LOC((r), (IA64_LOC_TYPE_REG \
| IA64_LOC_TYPE_FP))
#if 0
#define IA64_FP_LOC(l) ((l) | 0x1)
#define IA64_NAT_TYPE_LOC(t,l) ((l) | ((t) << 2))
#define IA64_GET_REG_LOC(r) ((r) >> 3)
#define IA64_GET_NAT_LOC(loc) ((loc) >> 3)
#endif
#ifdef UNW_LOCAL_ONLY
extern int ia64_acquire_unwind_info (unw_word_t, void *);
extern int ia64_release_unwind_info (void *);
# define ia64_acquire_unwind_info(c,ip,i) \
ia64_acquire_unwind_info((ip), (i))
# define ia64_release_unwind_info(c,ip,i) \
ia64_release_unwind_info((i))
# define ia64_get(c,l,v) (*(v) = *(unw_word_t *) (l), 0)
extern void *_U_ia64_uc_addr (ucontext_t *uc, unw_regnum_t regnum);
#define IA64_REG_LOC(c,r) ((unw_word_t) _U_ia64_uc_addr((c)->uc, (r)))
#define IA64_FPREG_LOC(c,r) \
((unw_word_t) _U_ia64_uc_addr((c)->uc, (r)) | IA64_LOC_TYPE_FP)
# define ia64_acquire_unwind_info(c,ip,i) \
_U_ia64_glibc_acquire_unwind_info((ip), (i), (c)->uc)
# define ia64_release_unwind_info(c,ip,i) \
_U_ia64_glibc_release_unwind_info((i), (c)->uc)
# define ia64_get(c,l,v) \
(*(v) = *(unw_word_t *) IA64_MASK_LOC_TYPE(l), 0)
# define ia64_put(c,l,v) \
(*(unw_word_t *) IA64_MASK_LOC_TYPE(l) = (v), 0)
# define ia64_getfp(c,l,v) \
(*(v) = *(unw_fpreg_t *) IA64_MASK_LOC_TYPE(l), 0)
# define ia64_putfp(c,l,v) \
(*(unw_fpreg_t *) IA64_MASK_LOC_TYPE(l) = (v), 0)
#else /* !UNW_LOCAL_ONLY */
#define IA64_IS_REG_LOC(r) (((r) & IA64_LOC_TYPE_REG) != 0)
#define IA64_REG_LOC(c,r) IA64_LOC((r), IA64_LOC_TYPE_REG)
#define IA64_FPREG_LOC(c,r) IA64_LOC((r), (IA64_LOC_TYPE_REG \
| IA64_LOC_TYPE_FP))
# define ia64_acquire_unwind_info(c,ip,i) \
(*(c)->acc.acquire_unwind_info)((ip), (i), (c)->acc.arg)
# define ia64_release_unwind_info(c,ip,i) \
@ -441,11 +451,10 @@ struct ia64_global_unwind_state
#define ia64_free_state_record UNW_OBJ(ia64_free_state_record)
#define ia64_find_save_locs UNW_OBJ(ia64_find_save_locs)
#define ia64_init UNW_OBJ(ia64_init)
#define ia64_glibc_acquire_unwind_info UNW_OBJ(ia64_glibc_acquire_unwind_info)
#define ia64_glibc_release_unwind_info UNW_OBJ(ia64_glibc_release_unwind_info)
#define ia64_access_reg UNW_OBJ(ia64_access_reg)
#define ia64_access_fpreg UNW_OBJ(ia64_access_fpreg)
#define ia64_scratch_loc UNW_OBJ(ia64_scratch_loc)
#define ia64_local_resume UNW_OBJ(ia64_local_resume)
extern struct ia64_global_unwind_state unw;
@ -455,9 +464,6 @@ extern int ia64_create_state_record (struct ia64_cursor *c,
extern int ia64_free_state_record (struct ia64_state_record *sr);
extern int ia64_find_save_locs (struct ia64_cursor *c);
extern void ia64_init (void);
extern int ia64_glibc_acquire_unwind_info (unw_word_t ip, void *info,
void *arg);
extern int ia64_glibc_release_unwind_info (void *info, void *arg);
extern int ia64_access_reg (struct ia64_cursor *c, unw_regnum_t reg,
unw_word_t *valp, int write);
extern int ia64_access_fpreg (struct ia64_cursor *c, unw_regnum_t reg,
@ -466,7 +472,12 @@ extern unw_word_t ia64_scratch_loc (struct ia64_cursor *c, unw_regnum_t reg);
extern void __ia64_install_context (const ucontext_t *ucp, long r15, long r16,
long r17, long r18)
__attribute__ ((noreturn));
__attribute__ ((noreturn));
extern int ia64_local_resume (unw_cursor_t *cursor, void *arg);
extern int _U_ia64_glibc_acquire_unwind_info (unw_word_t ip, void *info,
void *arg);
extern int _U_ia64_glibc_release_unwind_info (void *info, void *arg);
/* XXX should be in glibc: */
#ifndef IA64_SC_FLAG_ONSTACK
@ -478,3 +489,5 @@ extern void __ia64_install_context (const ucontext_t *ucp, long r15, long r16,
# define IA64_SC_FLAG_IN_SYSCALL (1 << IA64_SC_FLAG_IN_SYSCALL_BIT)
# define IA64_SC_FLAG_FPH_VALID (1 << IA64_SC_FLAG_FPH_VALID_BIT)
#endif
#endif /* unwind_i_h */