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PowerPC 601 need specific callbacks for its BATs setup.

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Implement PowerPC 601 HID0 register, needed for little-endian mode support.
As a consequence, we need to merge hflags coming from MSR with other ones.
Use little-endian mode from hflags instead of MSR during code translation.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3524 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-11-04 02:55:33 +00:00
parent 7a51ad822f
commit 056401eae6
8 changed files with 136 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

73
target-ppc/helper.c
View file

@ -482,10 +482,12 @@ static always_inline void bat_601_size_prot (CPUState *env,target_ulong *blp,
int key, pp, valid, prot;
bl = (*BATl & 0x0000003F) << 17;
#if defined (DEBUG_BATS)
if (loglevel != 0) {
fprintf(logfile, "b %02x ==> bl %08x msk %08x\n",
*BATl & 0x0000003F, bl, ~bl);
}
#endif
prot = 0;
valid = (*BATl >> 6) & 1;
if (valid) {
@ -1836,6 +1838,76 @@ void do_store_dbatl (CPUPPCState *env, int nr, target_ulong value)
env->DBAT[1][nr] = value;
}
void do_store_ibatu_601 (CPUPPCState *env, int nr, target_ulong value)
{
target_ulong mask;
int do_inval;
dump_store_bat(env, 'I', 0, nr, value);
if (env->IBAT[0][nr] != value) {
do_inval = 0;
mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
if (env->IBAT[1][nr] & 0x40) {
/* Invalidate BAT only if it is valid */
#if !defined(FLUSH_ALL_TLBS)
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
#else
do_inval = 1;
#endif
}
/* When storing valid upper BAT, mask BEPI and BRPN
* and invalidate all TLBs covered by this BAT
*/
env->IBAT[0][nr] = (value & 0x00001FFFUL) |
(value & ~0x0001FFFFUL & ~mask);
env->DBAT[0][nr] = env->IBAT[0][nr];
if (env->IBAT[1][nr] & 0x40) {
#if !defined(FLUSH_ALL_TLBS)
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
#else
do_inval = 1;
#endif
}
#if defined(FLUSH_ALL_TLBS)
if (do_inval)
tlb_flush(env, 1);
#endif
}
}
void do_store_ibatl_601 (CPUPPCState *env, int nr, target_ulong value)
{
target_ulong mask;
int do_inval;
dump_store_bat(env, 'I', 1, nr, value);
if (env->IBAT[1][nr] != value) {
do_inval = 0;
if (env->IBAT[1][nr] & 0x40) {
#if !defined(FLUSH_ALL_TLBS)
mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
#else
do_inval = 1;
#endif
}
if (value & 0x40) {
#if !defined(FLUSH_ALL_TLBS)
mask = (value << 17) & 0x0FFE0000UL;
do_invalidate_BAT(env, env->IBAT[0][nr], mask);
#else
do_inval = 1;
#endif
}
env->IBAT[1][nr] = value;
env->DBAT[1][nr] = value;
#if defined(FLUSH_ALL_TLBS)
if (do_inval)
tlb_flush(env, 1);
#endif
}
}
/*****************************************************************************/
/* TLB management */
void ppc_tlb_invalidate_all (CPUPPCState *env)
@ -2684,6 +2756,7 @@ static always_inline void powerpc_excp (CPUState *env,
* any special case that could occur. Just store MSR and update hflags
*/
env->msr = new_msr;
env->hflags_nmsr = 0x00000000;
hreg_compute_hflags(env);
env->nip = vector;
/* Reset exception state */