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New flag: disable_global_lock - Disables global lock usage in guest code.

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This commit is contained in:
Dr. Chat
2016-01-13 19:40:00 -06:00
parent a5b37dce1d
commit bd6bf16bd1
5 changed files with 61 additions and 48 deletions
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17
src/xenia/cpu/ppc/ppc_emit_control.cc
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@@ -10,6 +10,7 @@
#include "xenia/cpu/ppc/ppc_emit-private.h"
#include "xenia/base/assert.h"
#include "xenia/cpu/cpu_flags.h"
#include "xenia/cpu/ppc/ppc_context.h"
#include "xenia/cpu/ppc/ppc_frontend.h"
#include "xenia/cpu/ppc/ppc_hir_builder.h"
@@ -725,10 +726,14 @@ int InstrEmit_mtmsr(PPCHIRBuilder& f, const InstrData& i) {
f.ZeroExtend(f.ZeroExtend(f.LoadGPR(i.X.RT), INT64_TYPE), INT64_TYPE));
if (i.X.RT == 13) {
// iff storing from r13 we are taking a lock (disable interrupts).
f.CallExtern(f.builtins()->enter_global_lock);
if (!FLAGS_disable_global_lock) {
f.CallExtern(f.builtins()->enter_global_lock);
}
} else {
// Otherwise we are restoring interrupts (probably).
f.CallExtern(f.builtins()->leave_global_lock);
if (!FLAGS_disable_global_lock) {
f.CallExtern(f.builtins()->leave_global_lock);
}
}
return 0;
} else {
@@ -746,10 +751,14 @@ int InstrEmit_mtmsrd(PPCHIRBuilder& f, const InstrData& i) {
f.ZeroExtend(f.LoadGPR(i.X.RT), INT64_TYPE));
if (i.X.RT == 13) {
// iff storing from r13 we are taking a lock (disable interrupts).
f.CallExtern(f.builtins()->enter_global_lock);
if (!FLAGS_disable_global_lock) {
f.CallExtern(f.builtins()->enter_global_lock);
}
} else {
// Otherwise we are restoring interrupts (probably).
f.CallExtern(f.builtins()->leave_global_lock);
if (!FLAGS_disable_global_lock) {
f.CallExtern(f.builtins()->leave_global_lock);
}
}
return 0;
} else {