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-rw-r--r--src/core/arm/dyncom/arm_dyncom.cpp17
-rw-r--r--src/core/arm/dyncom/arm_dyncom.h2
-rw-r--r--src/core/arm/dyncom/arm_dyncom_run.cpp17
-rw-r--r--src/core/arm/interpreter/arminit.cpp7
-rw-r--r--src/core/arm/skyeye_common/armdefs.h4
-rw-r--r--src/core/arm/skyeye_common/vfp/vfp.cpp5
-rw-r--r--src/core/core.cpp9
7 files changed, 28 insertions, 33 deletions
diff --git a/src/core/arm/dyncom/arm_dyncom.cpp b/src/core/arm/dyncom/arm_dyncom.cpp
index c4af85242..bbcbbdd2b 100644
--- a/src/core/arm/dyncom/arm_dyncom.cpp
+++ b/src/core/arm/dyncom/arm_dyncom.cpp
@@ -7,6 +7,7 @@
#include "core/arm/dyncom/arm_dyncom.h"
#include "core/arm/dyncom/arm_dyncom_interpreter.h"
+#include "core/arm/dyncom/arm_dyncom_run.h"
#include "core/core.h"
#include "core/core_timing.h"
@@ -15,29 +16,29 @@ const static cpu_config_t s_arm11_cpu_info = {
"armv6", "arm11", 0x0007b000, 0x0007f000, NONCACHE
};
-ARM_DynCom::ARM_DynCom() {
+ARM_DynCom::ARM_DynCom(PrivilegeMode initial_mode) {
state = std::unique_ptr<ARMul_State>(new ARMul_State);
ARMul_NewState(state.get());
+ ARMul_SelectProcessor(state.get(), ARM_v6_Prop | ARM_v5_Prop | ARM_v5e_Prop);
state->abort_model = ABORT_BASE_RESTORED;
state->cpu = (cpu_config_t*)&s_arm11_cpu_info;
- state->bigendSig = LOW;
- ARMul_SelectProcessor(state.get(), ARM_v6_Prop | ARM_v5_Prop | ARM_v5e_Prop);
+ state->bigendSig = LOW;
state->lateabtSig = LOW;
+ state->NirqSig = HIGH;
// Reset the core to initial state
- ARMul_CoProInit(state.get());
ARMul_Reset(state.get());
state->NextInstr = RESUME; // NOTE: This will be overwritten by LoadContext
state->Emulate = RUN;
- state->Reg[15] = 0x00000000;
- state->Reg[13] = 0x10000000; // Set stack pointer to the top of the stack
- state->NirqSig = HIGH;
+ // Switch to the desired privilege mode.
+ switch_mode(state.get(), initial_mode);
- VFPInit(state.get()); // Initialize the VFP
+ state->Reg[13] = 0x10000000; // Set stack pointer to the top of the stack
+ state->Reg[15] = 0x00000000;
}
ARM_DynCom::~ARM_DynCom() {
diff --git a/src/core/arm/dyncom/arm_dyncom.h b/src/core/arm/dyncom/arm_dyncom.h
index 9e2dda843..213cac1ad 100644
--- a/src/core/arm/dyncom/arm_dyncom.h
+++ b/src/core/arm/dyncom/arm_dyncom.h
@@ -13,7 +13,7 @@
class ARM_DynCom final : virtual public ARM_Interface {
public:
- ARM_DynCom();
+ ARM_DynCom(PrivilegeMode initial_mode);
~ARM_DynCom();
void SetPC(u32 pc) override;
diff --git a/src/core/arm/dyncom/arm_dyncom_run.cpp b/src/core/arm/dyncom/arm_dyncom_run.cpp
index 15677da27..d79e3e4b2 100644
--- a/src/core/arm/dyncom/arm_dyncom_run.cpp
+++ b/src/core/arm/dyncom/arm_dyncom_run.cpp
@@ -2,9 +2,6 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
-#include <assert.h>
-
-#include "common/logging/log.h"
#include "core/arm/skyeye_common/armdefs.h"
void switch_mode(arm_core_t *core, uint32_t mode) {
@@ -13,6 +10,7 @@ void switch_mode(arm_core_t *core, uint32_t mode) {
if (mode != USERBANK) {
switch (core->Mode) {
+ case SYSTEM32MODE: // Shares registers with user mode
case USER32MODE:
core->Reg_usr[0] = core->Reg[13];
core->Reg_usr[1] = core->Reg[14];
@@ -42,7 +40,6 @@ void switch_mode(arm_core_t *core, uint32_t mode) {
core->Reg_firq[1] = core->Reg[14];
core->Spsr[FIQBANK] = core->Spsr_copy;
break;
-
}
switch (mode) {
@@ -81,11 +78,15 @@ void switch_mode(arm_core_t *core, uint32_t mode) {
core->Spsr_copy = core->Spsr[FIQBANK];
core->Bank = FIQBANK;
break;
-
+ case SYSTEM32MODE: // Shares registers with user mode.
+ core->Reg[13] = core->Reg_usr[0];
+ core->Reg[14] = core->Reg_usr[1];
+ core->Bank = SYSTEMBANK;
+ break;
}
+
+ // Set the mode bits in the APSR
+ core->Cpsr = (core->Cpsr & ~core->Mode) | mode;
core->Mode = mode;
- } else {
- LOG_CRITICAL(Core_ARM11, "user mode");
- exit(-2);
}
}
diff --git a/src/core/arm/interpreter/arminit.cpp b/src/core/arm/interpreter/arminit.cpp
index 0c0ce6c91..d3174c9a0 100644
--- a/src/core/arm/interpreter/arminit.cpp
+++ b/src/core/arm/interpreter/arminit.cpp
@@ -64,10 +64,9 @@ void ARMul_SelectProcessor(ARMul_State* state, unsigned properties)
state->is_pxa27x = (properties & ARM_PXA27X_Prop) != 0;
state->is_v7 = (properties & ARM_v7_Prop) != 0;
- /* Only initialse the coprocessor support once we
- know what kind of chip we are dealing with. */
- //ARMul_CoProInit (state);
-
+ // Only initialse the coprocessor support once we
+ // know what kind of chip we are dealing with.
+ ARMul_CoProInit(state);
}
/***************************************************************************\
diff --git a/src/core/arm/skyeye_common/armdefs.h b/src/core/arm/skyeye_common/armdefs.h
index 02f54f385..dc2256a35 100644
--- a/src/core/arm/skyeye_common/armdefs.h
+++ b/src/core/arm/skyeye_common/armdefs.h
@@ -270,7 +270,7 @@ enum {
* Mode and Bank Constants *
\***************************************************************************/
-enum {
+enum PrivilegeMode {
USER32MODE = 16,
FIQ32MODE = 17,
IRQ32MODE = 18,
@@ -288,7 +288,7 @@ enum {
ABORTBANK = 4,
UNDEFBANK = 5,
DUMMYBANK = 6,
- SYSTEMBANK = USERBANK
+ SYSTEMBANK = 7
};
/***************************************************************************\
diff --git a/src/core/arm/skyeye_common/vfp/vfp.cpp b/src/core/arm/skyeye_common/vfp/vfp.cpp
index 1cf146c53..6f22923bb 100644
--- a/src/core/arm/skyeye_common/vfp/vfp.cpp
+++ b/src/core/arm/skyeye_common/vfp/vfp.cpp
@@ -26,8 +26,6 @@
#include "core/arm/skyeye_common/vfp/asm_vfp.h"
#include "core/arm/skyeye_common/vfp/vfp.h"
-//ARMul_State* persistent_state; /* function calls from SoftFloat lib don't have an access to ARMul_state. */
-
unsigned VFPInit(ARMul_State* state)
{
state->VFP[VFP_OFFSET(VFP_FPSID)] = VFP_FPSID_IMPLMEN<<24 | VFP_FPSID_SW<<23 | VFP_FPSID_SUBARCH<<16 |
@@ -35,9 +33,6 @@ unsigned VFPInit(ARMul_State* state)
state->VFP[VFP_OFFSET(VFP_FPEXC)] = 0;
state->VFP[VFP_OFFSET(VFP_FPSCR)] = 0;
- //persistent_state = state;
- /* Reset only specify VFP_FPEXC_EN = '0' */
-
return 0;
}
diff --git a/src/core/core.cpp b/src/core/core.cpp
index 63be27be2..15787bc17 100644
--- a/src/core/core.cpp
+++ b/src/core/core.cpp
@@ -56,11 +56,10 @@ void Stop() {
/// Initialize the core
int Init() {
- LOG_DEBUG(Core, "initialized OK");
-
- g_sys_core = new ARM_DynCom();
- g_app_core = new ARM_DynCom();
+ g_sys_core = new ARM_DynCom(USER32MODE);
+ g_app_core = new ARM_DynCom(USER32MODE);
+ LOG_DEBUG(Core, "Initialized OK");
return 0;
}
@@ -68,7 +67,7 @@ void Shutdown() {
delete g_app_core;
delete g_sys_core;
- LOG_DEBUG(Core, "shutdown OK");
+ LOG_DEBUG(Core, "Shutdown OK");
}
} // namespace
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 19:20:55 +0100