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(ia64_access_reg): Handle "cfm" cache.

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(Logical change 1.42)
This commit is contained in:
mostang.com!davidm 2003-01-23 18:47:51 +00:00
parent a89e112a32
commit e30bf11e2c
1 changed files with 16 additions and 11 deletions

27
src/ia64/Gregs-ia64.c
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@ -226,7 +226,7 @@ HIDDEN int
ia64_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp, ia64_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
int write) int write)
{ {
unw_word_t loc = -8, reg_loc, nat, nat_loc, cfm, mask, pr; unw_word_t loc = -8, reg_loc, nat, nat_loc, mask, pr;
int ret, readonly = 0; int ret, readonly = 0;
switch (reg) switch (reg)
@ -274,7 +274,12 @@ ia64_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
case UNW_IA64_BR + 3: loc = c->b3_loc; break; case UNW_IA64_BR + 3: loc = c->b3_loc; break;
case UNW_IA64_BR + 4: loc = c->b4_loc; break; case UNW_IA64_BR + 4: loc = c->b4_loc; break;
case UNW_IA64_BR + 5: loc = c->b5_loc; break; case UNW_IA64_BR + 5: loc = c->b5_loc; break;
case UNW_IA64_CFM: loc = c->cfm_loc; break;
case UNW_IA64_CFM:
if (write)
c->cfm = *valp; /* also update the CFM cache */
loc = c->cfm_loc;
break;
case UNW_IA64_PR: case UNW_IA64_PR:
if (write) if (write)
@ -307,21 +312,21 @@ ia64_access_reg (struct cursor *c, unw_regnum_t reg, unw_word_t *valp,
return -UNW_EBADREG; return -UNW_EBADREG;
ret = ia64_get_stacked (c, reg, &loc, &nat_loc); ret = ia64_get_stacked (c, reg, &loc, &nat_loc);
if (ret < 0) if (ret < 0)
return 0; return ret;
mask = (unw_word_t) 1 << ia64_rse_slot_num (loc); mask = (unw_word_t) 1 << ia64_rse_slot_num (loc);
return update_nat (c, nat_loc, mask, valp, write); return update_nat (c, nat_loc, mask, valp, write);
case UNW_IA64_AR_EC: case UNW_IA64_AR_EC:
ret = ia64_get (c, c->cfm_loc, &cfm);
if (ret < 0)
return ret;
if (write) if (write)
ret = ia64_put (c, c->cfm_loc, ((cfm & ~((unw_word_t) 0x3f << 52)) {
| (*valp & 0x3f) << 52)); c->cfm = (c->cfm & ~((unw_word_t) 0x3f << 52)) | ((*valp & 0x3f) << 52);
return ia64_put (c, c->cfm_loc, c->cfm);
}
else else
*valp = (cfm >> 52) & 0x3f; {
return ret; *valp = (c->cfm >> 52) & 0x3f;
return 0;
}
/* scratch & special registers: */ /* scratch & special registers: */