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/*
* Copyright (C) 2010-2012 Guan Xuetao
*
* 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.
*
* Contributions from 2012-04-01 on are considered under GPL version 2,
* or (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "semihosting/console.h"
#undef DEBUG_UC32
#ifdef DEBUG_UC32
#define DPRINTF(fmt, ...) printf("%s: " fmt , __func__, ## __VA_ARGS__)
#else
#define DPRINTF(fmt, ...) do {} while (0)
#endif
#ifndef CONFIG_USER_ONLY
void helper_cp0_set(CPUUniCore32State *env, uint32_t val, uint32_t creg,
uint32_t cop)
{
/*
* movc pp.nn, rn, #imm9
* rn: UCOP_REG_D
* nn: UCOP_REG_N
* 1: sys control reg.
* 2: page table base reg.
* 3: data fault status reg.
* 4: insn fault status reg.
* 5: cache op. reg.
* 6: tlb op. reg.
* imm9: split UCOP_IMM10 with bit5 is 0
*/
switch (creg) {
case 1:
if (cop != 0) {
goto unrecognized;
}
env->cp0.c1_sys = val;
break;
case 2:
if (cop != 0) {
goto unrecognized;
}
env->cp0.c2_base = val;
break;
case 3:
if (cop != 0) {
goto unrecognized;
}
env->cp0.c3_faultstatus = val;
break;
case 4:
if (cop != 0) {
goto unrecognized;
}
env->cp0.c4_faultaddr = val;
break;
case 5:
switch (cop) {
case 28:
DPRINTF("Invalidate Entire I&D cache\n");
return;
case 20:
DPRINTF("Invalidate Entire Icache\n");
return;
case 12:
DPRINTF("Invalidate Entire Dcache\n");
return;
case 10:
DPRINTF("Clean Entire Dcache\n");
return;
case 14:
DPRINTF("Flush Entire Dcache\n");
return;
case 13:
DPRINTF("Invalidate Dcache line\n");
return;
case 11:
DPRINTF("Clean Dcache line\n");
return;
case 15:
DPRINTF("Flush Dcache line\n");
return;
}
break;
case 6:
if ((cop <= 6) && (cop >= 2)) {
/* invalid all tlb */
tlb_flush(env_cpu(env));
return;
}
break;
default:
goto unrecognized;
}
return;
unrecognized:
qemu_log_mask(LOG_GUEST_ERROR,
"Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
creg, cop);
}
uint32_t helper_cp0_get(CPUUniCore32State *env, uint32_t creg, uint32_t cop)
{
/*
* movc rd, pp.nn, #imm9
* rd: UCOP_REG_D
* nn: UCOP_REG_N
* 0: cpuid and cachetype
* 1: sys control reg.
* 2: page table base reg.
* 3: data fault status reg.
* 4: insn fault status reg.
* imm9: split UCOP_IMM10 with bit5 is 0
*/
switch (creg) {
case 0:
switch (cop) {
case 0:
return env->cp0.c0_cpuid;
case 1:
return env->cp0.c0_cachetype;
}
break;
case 1:
if (cop == 0) {
return env->cp0.c1_sys;
}
break;
case 2:
if (cop == 0) {
return env->cp0.c2_base;
}
break;
case 3:
if (cop == 0) {
return env->cp0.c3_faultstatus;
}
break;
case 4:
if (cop == 0) {
return env->cp0.c4_faultaddr;
}
break;
}
qemu_log_mask(LOG_GUEST_ERROR,
"Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
creg, cop);
return 0;
}
void helper_cp1_putc(target_ulong regval)
{
const char c = regval;
qemu_semihosting_log_out(&c, sizeof(c));
}
#endif /* !CONFIG_USER_ONLY */
bool uc32_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
{
if (interrupt_request & CPU_INTERRUPT_HARD) {
UniCore32CPU *cpu = UNICORE32_CPU(cs);
CPUUniCore32State *env = &cpu->env;
if (!(env->uncached_asr & ASR_I)) {
cs->exception_index = UC32_EXCP_INTR;
uc32_cpu_do_interrupt(cs);
return true;
}
}
return false;
}
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