From: Blue Swirl <blauwirbel@gmail.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [5332] Add mmu tlb demap support (Igor Kovalenko)
Date: Sat, 27 Sep 2008 19:43:18 +0000 [thread overview]
Message-ID: <E1KjfhG-0002xF-Ju@cvs.savannah.gnu.org> (raw)
Revision: 5332
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5332
Author: blueswir1
Date: 2008-09-27 19:43:18 +0000 (Sat, 27 Sep 2008)
Log Message:
-----------
Add mmu tlb demap support (Igor Kovalenko)
Modified Paths:
--------------
trunk/target-sparc/op_helper.c
Modified: trunk/target-sparc/op_helper.c
===================================================================
--- trunk/target-sparc/op_helper.c 2008-09-27 15:32:41 UTC (rev 5331)
+++ trunk/target-sparc/op_helper.c 2008-09-27 19:43:18 UTC (rev 5332)
@@ -1941,6 +1941,8 @@
}
case 0x55: // I-MMU data access
{
+ // TODO: auto demap
+
unsigned int i = (addr >> 3) & 0x3f;
env->itlb_tag[i] = env->immuregs[6];
@@ -1948,7 +1950,22 @@
return;
}
case 0x57: // I-MMU demap
- // XXX
+ {
+ unsigned int i;
+
+ for (i = 0; i < 64; i++) {
+ if ((env->itlb_tte[i] & 0x8000000000000000ULL) != 0) {
+ target_ulong mask = 0xffffffffffffe000ULL;
+
+ mask <<= 3 * ((env->itlb_tte[i] >> 61) & 3);
+ if ((val & mask) == (env->itlb_tag[i] & mask)) {
+ env->itlb_tag[i] = 0;
+ env->itlb_tte[i] = 0;
+ }
+ return;
+ }
+ }
+ }
return;
case 0x58: // D-MMU regs
{
@@ -2018,6 +2035,23 @@
return;
}
case 0x5f: // D-MMU demap
+ {
+ unsigned int i;
+
+ for (i = 0; i < 64; i++) {
+ if ((env->dtlb_tte[i] & 0x8000000000000000ULL) != 0) {
+ target_ulong mask = 0xffffffffffffe000ULL;
+
+ mask <<= 3 * ((env->dtlb_tte[i] >> 61) & 3);
+ if ((val & mask) == (env->dtlb_tag[i] & mask)) {
+ env->dtlb_tag[i] = 0;
+ env->dtlb_tte[i] = 0;
+ }
+ return;
+ }
+ }
+ }
+ return;
case 0x49: // Interrupt data receive
// XXX
return;
reply other threads:[~2008-09-27 19:43 UTC|newest]
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