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Code Issues Releases Activity

(local_resume): Support HP-UX via setcontext() (doesn't actually work yet).

Browse source 
(remote_install_cursor): Enable the short-cut for Linux only.  Since HP-UX uses
	an opaque data-structure for ucontext_t, we can't play the same trick
	there.  Fix two typos: "> 0" -> ">= 0".
(unw_resume): Handle non-UNW_LOCAL_ONLY case simp;u bu calling
	remote_install_cursor().

(Logical change 1.87)
This commit is contained in:
mostang.com!davidm 2003-04-24 20:45:07 +00:00
parent 4bc8b02277
commit 3d3510c047
1 changed files with 14 additions and 11 deletions
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25
src/ia64/Gresume-ia64.c
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@ -34,6 +34,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
static inline int static inline int
local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg) local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
{ {
#if defined(__linux)
unw_word_t val, sol, sof, pri_unat, n, pfs; unw_word_t val, sol, sof, pri_unat, n, pfs;
struct cursor *c = (struct cursor *) cursor; struct cursor *c = (struct cursor *) cursor;
struct struct
@ -137,6 +138,12 @@ local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
extra.r18 = c->eh_args[3]; extra.r18 = c->eh_args[3];
} }
ia64_install_cursor (c, pri_unat, (unw_word_t *) &extra); ia64_install_cursor (c, pri_unat, (unw_word_t *) &extra);
#elif defined(__hpux)
struct cursor *c = (struct cursor *) cursor;
setcontext (c->as_arg); /* should not return */
#endif
return -UNW_EINVAL;
} }
HIDDEN int HIDDEN int
@ -152,7 +159,6 @@ ia64_local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
static inline int static inline int
remote_install_cursor (struct cursor *c) remote_install_cursor (struct cursor *c)
{ {
#ifndef __hpux
int (*access_reg) (unw_addr_space_t, unw_regnum_t, unw_word_t *, int (*access_reg) (unw_addr_space_t, unw_regnum_t, unw_word_t *,
int write, void *); int write, void *);
int (*access_fpreg) (unw_addr_space_t, unw_regnum_t, unw_fpreg_t *, int (*access_fpreg) (unw_addr_space_t, unw_regnum_t, unw_fpreg_t *,
@ -161,6 +167,7 @@ remote_install_cursor (struct cursor *c)
unw_word_t val; unw_word_t val;
int reg; int reg;
#ifdef __linux
if (c->as == unw_local_addr_space) if (c->as == unw_local_addr_space)
{ {
/* Take a short-cut: we directly resume out of the cursor and /* Take a short-cut: we directly resume out of the cursor and
@ -208,26 +215,28 @@ remote_install_cursor (struct cursor *c)
MEMIFY (IA64_REG_F31, UNW_IA64_FR + 31); MEMIFY (IA64_REG_F31, UNW_IA64_FR + 31);
} }
else else
#endif /* __linux */
{ {
access_reg = c->as->acc.access_reg; access_reg = c->as->acc.access_reg;
access_fpreg = c->as->acc.access_fpreg; access_fpreg = c->as->acc.access_fpreg;
debug (1, "%s: copying out cursor state\n", __FUNCTION__);
for (reg = 0; reg < UNW_REG_LAST; ++reg) for (reg = 0; reg < UNW_REG_LAST; ++reg)
{ {
if (unw_is_fpreg (reg)) if (unw_is_fpreg (reg))
{ {
if (ia64_access_fpreg (c, reg, &fpval, 0) > 0) if (ia64_access_fpreg (c, reg, &fpval, 0) >= 0)
(*access_fpreg) (c->as, reg, &fpval, 1, c->as_arg); (*access_fpreg) (c->as, reg, &fpval, 1, c->as_arg);
} }
else else
{ {
if (ia64_access_reg (c, reg, &val, 0) > 0) if (ia64_access_reg (c, reg, &val, 0) >= 0)
(*access_reg) (c->as, reg, &val, 1, c->as_arg); (*access_reg) (c->as, reg, &val, 1, c->as_arg);
} }
} }
} }
return (*c->as->acc.resume) (c->as, (unw_cursor_t *) c, c->as_arg); return (*c->as->acc.resume) (c->as, (unw_cursor_t *) c, c->as_arg);
#endif
} }
#endif /* !UNW_LOCAL_ONLY */ #endif /* !UNW_LOCAL_ONLY */
@ -240,12 +249,6 @@ unw_resume (unw_cursor_t *cursor)
#ifdef UNW_LOCAL_ONLY #ifdef UNW_LOCAL_ONLY
return local_resume (c->as, cursor, c->as_arg); return local_resume (c->as, cursor, c->as_arg);
#else #else
{ return remote_install_cursor (c);
int ret;
if ((ret = remote_install_cursor (c)) < 0)
return ret;
return (*c->as->acc.resume) (c->as, cursor, c->as_arg);
}
#endif #endif
} }