cpu/cpu_jitc_x86/ppc_cpu.cc

/*
 *      PearPC
 *      ppc_cpu.cc
 *
 *      Copyright (C) 2003 Sebastian Biallas (sb@biallas.net)
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License version 2 as
 *      published by the Free Software Foundation.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <cerrno>
#include <cstring>

#include "debug/tracers.h"
#include "system/sys.h"
#include "system/sysclk.h"
#include "system/systhread.h"
#include "system/systimer.h"
#include "ppc_cpu.h"
#include "ppc_dec.h"
#include "ppc_mmu.h"
#include "jitc.h"
#include "jitc_asm.h"
#include "jitc_debug.h"

PPC_CPU_State gCPU;
bool gSinglestep = false;
uint32 gBreakpoint;
uint32 gBreakpoint2;

extern "C" void ppc_display_jitc_stats()
{
        ht_printf("pg.dest:   write: %qd    out of pages: %qd   out of tc: %qd\r", &gJITC.destroy_write, &gJITC.destroy_oopages, &gJITC.destroy_ootc);
}

void ppc_fpu_test();

uint64 gJITCCompileTicks;
uint64 gJITCRunTicks;
uint64 gJITCRunTicksStart;

uint64 gClientClockFrequency;
uint64 gClientBusFrequency;
uint64 gClientTimeBaseFrequency;
uint64 gStartHostCLKTicks;
uint64 gTBreadITB;
int gHostClockScale;

uint64 ppc_get_cpu_ideal_timebase()
{
        uint64 ticks = sys_get_hiresclk_ticks();
        if (gHostClockScale < 0) {
                // negative shift count -> make it positive
                return (ticks - gStartHostCLKTicks) >> (-gHostClockScale);
        } else {
                return (ticks - gStartHostCLKTicks) << gHostClockScale;
        }
}

uint64 ppc_get_cpu_timebase()
{
        uint64 ticks = sys_get_hiresclk_ticks();
        if (gHostClockScale < 0) {
                gCPU.tb += (ticks - gTBreadITB) >> (-gHostClockScale);
        } else {
                gCPU.tb += (ticks - gTBreadITB) << gHostClockScale;
        }

        gTBreadITB = ticks;
        return gCPU.tb;
}

sys_timer gDECtimer;
sys_semaphore gCPUDozeSem;

extern "C" void cpu_doze()
{
        sys_lock_semaphore(gCPUDozeSem);
        if (!gCPU.exception_pending) sys_wait_semaphore_bounded(gCPUDozeSem, 10);       
        sys_unlock_semaphore(gCPUDozeSem);
}

void ppc_cpu_wakeup()
{
        sys_signal_semaphore(gCPUDozeSem);      
}

static void decTimerCB(sys_timer t)
{
        ppc_cpu_atomic_raise_dec_exception();
//      cpu_wakeup();
}

void ppc_cpu_run()
{
//      ppc_fpu_test();
//      return;
        gJITCRunTicks = 0;
        gJITCCompileTicks = 0;
        gJITCRunTicksStart = jitcDebugGetTicks();
        PPC_CPU_TRACE("execution started at %08x\n", gCPU.pc);
        jitcDebugInit();
/*
        PPC_CPU_WARN("clock ticks / second = %08qx\n", q);
        q = sys_get_cpu_ticks();
        PPC_CPU_WARN("ticks = %08qx\n", q);
        q = sys_get_cpu_ticks();
        PPC_CPU_WARN("ticks = %08qx\n", q);
        q = sys_get_cpu_ticks();
        PPC_CPU_WARN("ticks = %08qx\n", q);*/

        if (!sys_create_timer(&gDECtimer, decTimerCB)) {
                ht_printf("Unable to create timer\n");
                exit(1);
        }
        ppc_start_jitc_asm(gCPU.pc);
}

void ppc_cpu_map_framebuffer(uint32 pa, uint32 ea)
{
        // use BAT for framebuffer
        gCPU.dbatu[0] = ea|(7<<2)|0x3;
        gCPU.dbatl[0] = pa;

        gCPU.dbat_bl[0] = (~gCPU.dbatu[0] << 15) & 0xfffe0000;
        gCPU.dbat_nbl[0] = ~gCPU.dbat_bl[0];

        gCPU.dbat_bepi[0] = gCPU.dbatu[0] & gCPU.dbat_bl[0];
        gCPU.dbat_brpn[0] = gCPU.dbatl[0] & gCPU.dbat_bl[0];
}


void ppc_cpu_stop()
{
        gCPU.exception_pending = true;
        gCPU.stop_exception = true;
}

uint64  ppc_get_clock_frequency(int cpu)
{
        return gClientClockFrequency;
}

uint64  ppc_get_bus_frequency(int cpu)
{
        return gClientBusFrequency;
}

uint64  ppc_get_timebase_frequency(int cpu)
{
        return gClientTimeBaseFrequency;
}


void ppc_machine_check_exception()
{
        PPC_CPU_ERR("machine check exception\n");
}

uint32  ppc_cpu_get_gpr(int cpu, int i)
{
        return gCPU.gpr[i];
}

void    ppc_cpu_set_gpr(int cpu, int i, uint32 newvalue)
{
        gCPU.gpr[i] = newvalue;
}

void    ppc_cpu_set_msr(int cpu, uint32 newvalue)
{
        gCPU.msr = newvalue;
}

void    ppc_cpu_set_pc(int cpu, uint32 newvalue)
{
        gCPU.pc = newvalue;
}

uint32  ppc_cpu_get_pc(int cpu)
{
        return gCPU.pc_ofs + gCPU.current_code_base;
}

uint32  ppc_cpu_get_pvr(int cpu)
{
        return gCPU.pvr;
}


void ppc_set_singlestep_v(bool v, const char *file, int line, const char *format, ...)
{
        va_list arg;
        va_start(arg, format);
        ht_fprintf(stdout, "singlestep %s from %s:%d, info: ", v ? "set" : "cleared", file, line);
        ht_vfprintf(stdout, format, arg);
        ht_fprintf(stdout, "\n");
        va_end(arg);
        gSinglestep = v;
}

void ppc_set_singlestep_nonverbose(bool v)
{
        gSinglestep = v;
}

#define CPU_KEY_PVR     "cpu_pvr"

#include "configparser.h"

bool ppc_cpu_init()
{
        memset(&gCPU, 0, sizeof gCPU);
        gCPU.pvr = gConfig->getConfigInt(CPU_KEY_PVR);
        
        ppc_dec_init();
        // initialize srs (mostly for prom)
        for (int i=0; i<16; i++) {
                gCPU.sr[i] = 0x2aa*i;
        }
        
        gCPU.x87cw = 0x37f;

        sys_create_semaphore(&gCPUDozeSem);

        gStartHostCLKTicks = sys_get_hiresclk_ticks();
        uint64 q = sys_get_hiresclk_ticks_per_second();
        gHostClockScale = 0;
        while (q < PPC_TIMEBASE_FREQUENCY) {
                gHostClockScale++;
                q <<= 1;
        }
        while (q > (PPC_TIMEBASE_FREQUENCY*2)) {
                gHostClockScale--;
                q >>= 1;
        }
        gClientTimeBaseFrequency = q;
        gClientBusFrequency = gClientTimeBaseFrequency * 4;
        gClientClockFrequency = gClientBusFrequency * 5;

        return jitc_init(4096, 32*1024*1024);
}

void ppc_cpu_init_config()
{
        gConfig->acceptConfigEntryIntDef("cpu_pvr", 0x000c0201);
}
1	dpavlin	1	/*
2			* PearPC
3			* ppc_cpu.cc
4			*
5			* Copyright (C) 2003 Sebastian Biallas (sb@biallas.net)
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License version 2 as
9			* published by the Free Software Foundation.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19			*/
20
21			#include <cerrno>
22			#include <cstring>
23
24			#include "debug/tracers.h"
25			#include "system/sys.h"
26			#include "system/sysclk.h"
27			#include "system/systhread.h"
28			#include "system/systimer.h"
29			#include "ppc_cpu.h"
30			#include "ppc_dec.h"
31			#include "ppc_mmu.h"
32			#include "jitc.h"
33			#include "jitc_asm.h"
34			#include "jitc_debug.h"
35
36			PPC_CPU_State gCPU;
37			bool gSinglestep = false;
38			uint32 gBreakpoint;
39			uint32 gBreakpoint2;
40
41			extern "C" void ppc_display_jitc_stats()
42			{
43			ht_printf("pg.dest: write: %qd out of pages: %qd out of tc: %qd\r", &gJITC.destroy_write, &gJITC.destroy_oopages, &gJITC.destroy_ootc);
44			}
45
46			void ppc_fpu_test();
47
48			uint64 gJITCCompileTicks;
49			uint64 gJITCRunTicks;
50			uint64 gJITCRunTicksStart;
51
52			uint64 gClientClockFrequency;
53			uint64 gClientBusFrequency;
54			uint64 gClientTimeBaseFrequency;
55			uint64 gStartHostCLKTicks;
56			uint64 gTBreadITB;
57			int gHostClockScale;
58
59			uint64 ppc_get_cpu_ideal_timebase()
60			{
61			uint64 ticks = sys_get_hiresclk_ticks();
62			if (gHostClockScale < 0) {
63			// negative shift count -> make it positive
64			return (ticks - gStartHostCLKTicks) >> (-gHostClockScale);
65			} else {
66			return (ticks - gStartHostCLKTicks) << gHostClockScale;
67			}
68			}
69
70			uint64 ppc_get_cpu_timebase()
71			{
72			uint64 ticks = sys_get_hiresclk_ticks();
73			if (gHostClockScale < 0) {
74			gCPU.tb += (ticks - gTBreadITB) >> (-gHostClockScale);
75			} else {
76			gCPU.tb += (ticks - gTBreadITB) << gHostClockScale;
77			}
78
79			gTBreadITB = ticks;
80			return gCPU.tb;
81			}
82
83			sys_timer gDECtimer;
84			sys_semaphore gCPUDozeSem;
85
86			extern "C" void cpu_doze()
87			{
88			sys_lock_semaphore(gCPUDozeSem);
89			if (!gCPU.exception_pending) sys_wait_semaphore_bounded(gCPUDozeSem, 10);
90			sys_unlock_semaphore(gCPUDozeSem);
91			}
92
93			void ppc_cpu_wakeup()
94			{
95			sys_signal_semaphore(gCPUDozeSem);
96			}
97
98			static void decTimerCB(sys_timer t)
99			{
100			ppc_cpu_atomic_raise_dec_exception();
101			// cpu_wakeup();
102			}
103
104			void ppc_cpu_run()
105			{
106			// ppc_fpu_test();
107			// return;
108			gJITCRunTicks = 0;
109			gJITCCompileTicks = 0;
110			gJITCRunTicksStart = jitcDebugGetTicks();
111			PPC_CPU_TRACE("execution started at %08x\n", gCPU.pc);
112			jitcDebugInit();
113			/*
114			PPC_CPU_WARN("clock ticks / second = %08qx\n", q);
115			q = sys_get_cpu_ticks();
116			PPC_CPU_WARN("ticks = %08qx\n", q);
117			q = sys_get_cpu_ticks();
118			PPC_CPU_WARN("ticks = %08qx\n", q);
119			q = sys_get_cpu_ticks();
120			PPC_CPU_WARN("ticks = %08qx\n", q);*/
121
122			if (!sys_create_timer(&gDECtimer, decTimerCB)) {
123			ht_printf("Unable to create timer\n");
124			exit(1);
125			}
126			ppc_start_jitc_asm(gCPU.pc);
127			}
128
129			void ppc_cpu_map_framebuffer(uint32 pa, uint32 ea)
130			{
131			// use BAT for framebuffer
132			gCPU.dbatu[0] = ea\|(7<<2)\|0x3;
133			gCPU.dbatl[0] = pa;
134
135			gCPU.dbat_bl[0] = (~gCPU.dbatu[0] << 15) & 0xfffe0000;
136			gCPU.dbat_nbl[0] = ~gCPU.dbat_bl[0];
137
138			gCPU.dbat_bepi[0] = gCPU.dbatu[0] & gCPU.dbat_bl[0];
139			gCPU.dbat_brpn[0] = gCPU.dbatl[0] & gCPU.dbat_bl[0];
140			}
141
142
143			void ppc_cpu_stop()
144			{
145			gCPU.exception_pending = true;
146			gCPU.stop_exception = true;
147			}
148
149			uint64 ppc_get_clock_frequency(int cpu)
150			{
151			return gClientClockFrequency;
152			}
153
154			uint64 ppc_get_bus_frequency(int cpu)
155			{
156			return gClientBusFrequency;
157			}
158
159			uint64 ppc_get_timebase_frequency(int cpu)
160			{
161			return gClientTimeBaseFrequency;
162			}
163
164
165			void ppc_machine_check_exception()
166			{
167			PPC_CPU_ERR("machine check exception\n");
168			}
169
170			uint32 ppc_cpu_get_gpr(int cpu, int i)
171			{
172			return gCPU.gpr[i];
173			}
174
175			void ppc_cpu_set_gpr(int cpu, int i, uint32 newvalue)
176			{
177			gCPU.gpr[i] = newvalue;
178			}
179
180			void ppc_cpu_set_msr(int cpu, uint32 newvalue)
181			{
182			gCPU.msr = newvalue;
183			}
184
185			void ppc_cpu_set_pc(int cpu, uint32 newvalue)
186			{
187			gCPU.pc = newvalue;
188			}
189
190			uint32 ppc_cpu_get_pc(int cpu)
191			{
192			return gCPU.pc_ofs + gCPU.current_code_base;
193			}
194
195			uint32 ppc_cpu_get_pvr(int cpu)
196			{
197			return gCPU.pvr;
198			}
199
200
201			void ppc_set_singlestep_v(bool v, const char file, int line, const char format, ...)
202			{
203			va_list arg;
204			va_start(arg, format);
205			ht_fprintf(stdout, "singlestep %s from %s:%d, info: ", v ? "set" : "cleared", file, line);
206			ht_vfprintf(stdout, format, arg);
207			ht_fprintf(stdout, "\n");
208			va_end(arg);
209			gSinglestep = v;
210			}
211
212			void ppc_set_singlestep_nonverbose(bool v)
213			{
214			gSinglestep = v;
215			}
216
217			#define CPU_KEY_PVR "cpu_pvr"
218
219			#include "configparser.h"
220
221			bool ppc_cpu_init()
222			{
223			memset(&gCPU, 0, sizeof gCPU);
224			gCPU.pvr = gConfig->getConfigInt(CPU_KEY_PVR);
225
226			ppc_dec_init();
227			// initialize srs (mostly for prom)
228			for (int i=0; i<16; i++) {
229			gCPU.sr[i] = 0x2aa*i;
230			}
231
232			gCPU.x87cw = 0x37f;
233
234			sys_create_semaphore(&gCPUDozeSem);
235
236			gStartHostCLKTicks = sys_get_hiresclk_ticks();
237			uint64 q = sys_get_hiresclk_ticks_per_second();
238			gHostClockScale = 0;
239			while (q < PPC_TIMEBASE_FREQUENCY) {
240			gHostClockScale++;
241			q <<= 1;
242			}
243			while (q > (PPC_TIMEBASE_FREQUENCY*2)) {
244			gHostClockScale--;
245			q >>= 1;
246			}
247			gClientTimeBaseFrequency = q;
248			gClientBusFrequency = gClientTimeBaseFrequency * 4;
249			gClientClockFrequency = gClientBusFrequency * 5;
250
251			return jitc_init(4096, 3210241024);
252			}
253
254			void ppc_cpu_init_config()
255			{
256			gConfig->acceptConfigEntryIntDef("cpu_pvr", 0x000c0201);
257			}