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(local_resume): Clear IA64_SC_FLAG_IN_SYSCALL before resuming via

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sigreturn().  This is needed to ensure that all scratch-regs
	get restored.  Also add some more debug statements.

(Logical change 1.103)
This commit is contained in:
hp.com!davidm 2003-09-25 05:08:18 +00:00
parent d09c9dcec9
commit 350ae98340
1 changed files with 11 additions and 0 deletions
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11
src/ia64/Gresume-ia64.c
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@ -108,6 +108,10 @@ local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
sof = (c->cfm & 0x7f); sof = (c->cfm & 0x7f);
rbs_cover_and_flush (c, sof); rbs_cover_and_flush (c, sof);
/* Clear the "in-syscall" flag, because in general we won't be
returning to the interruption-point and we need all registers
restored. */
sc->sc_flags &= ~IA64_SC_FLAG_IN_SYSCALL;
sc->sc_ip = c->ip; sc->sc_ip = c->ip;
sc->sc_cfm = c->cfm & (((unw_word_t) 1 << 38) - 1); sc->sc_cfm = c->cfm & (((unw_word_t) 1 << 38) - 1);
sc->sc_pr = (c->pr & ~PR_SCRATCH) | (sc->sc_pr & ~PR_PRESERVED); sc->sc_pr = (c->pr & ~PR_SCRATCH) | (sc->sc_pr & ~PR_PRESERVED);
@ -121,6 +125,9 @@ local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
if (c->eh_valid_mask & 0x2) sc->sc_gr[16] = c->eh_args[1]; if (c->eh_valid_mask & 0x2) sc->sc_gr[16] = c->eh_args[1];
if (c->eh_valid_mask & 0x4) sc->sc_gr[17] = c->eh_args[2]; if (c->eh_valid_mask & 0x4) sc->sc_gr[17] = c->eh_args[2];
if (c->eh_valid_mask & 0x8) sc->sc_gr[18] = c->eh_args[3]; if (c->eh_valid_mask & 0x8) sc->sc_gr[18] = c->eh_args[3];
debug (10, "%s: sc: r15=%lx,r16=%lx,r17=%lx,r18=%lx\n",
__FUNCTION__, (long) sc->sc_gr[15], (long) sc->sc_gr[16],
(long) sc->sc_gr[17], (long) sc->sc_gr[18]);
} }
else else
{ {
@ -136,7 +143,11 @@ local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
extra.r16 = c->eh_args[1]; extra.r16 = c->eh_args[1];
extra.r17 = c->eh_args[2]; extra.r17 = c->eh_args[2];
extra.r18 = c->eh_args[3]; extra.r18 = c->eh_args[3];
debug (10, "%s: extra: r15=%lx,r16=%lx,r17=%lx,r18=%lx\n",
__FUNCTION__, (long) extra.r15, (long) extra.r16,
(long) extra.r17, (long) extra.r18);
} }
debug (10, "%s: resuming at ip=%lx\n", __FUNCTION__, (long) c->ip);
ia64_install_cursor (c, pri_unat, (unw_word_t *) &extra); ia64_install_cursor (c, pri_unat, (unw_word_t *) &extra);
#elif defined(__hpux) #elif defined(__hpux)
struct cursor *c = (struct cursor *) cursor; struct cursor *c = (struct cursor *) cursor;