qemu/target-unicore32/helper.c
Guan Xuetao ff5928d0f2 unicore32-softmmu: Add a minimal curses screen support
This patch adds a minimal curses screen support for unicore32-softmmu.
We assume 80*30 screen size to minimize the implementation.
Two problems are not solved, but they are innocuous.
1. curses windows will be blank when switching to monitor screen and back
2. backspace is not handled yet

v1->v2: add extra handler for '\r'

Signed-off-by: Zhang Mengchi <zhangmengchi@mprc.pku.edu.cn>
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-08-11 09:37:05 +00:00

257 lines
5.9 KiB
C

/*
* 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 "cpu.h"
#include "gdbstub.h"
#include "helper.h"
#include "host-utils.h"
#include "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
CPUUniCore32State *uc32_cpu_init(const char *cpu_model)
{
UniCore32CPU *cpu;
CPUUniCore32State *env;
static int inited = 1;
if (object_class_by_name(cpu_model) == NULL) {
return NULL;
}
cpu = UNICORE32_CPU(object_new(cpu_model));
env = &cpu->env;
if (inited) {
inited = 0;
uc32_translate_init();
}
qemu_init_vcpu(env);
return env;
}
uint32_t HELPER(clo)(uint32_t x)
{
return clo32(x);
}
uint32_t HELPER(clz)(uint32_t x)
{
return clz32(x);
}
#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, 1);
return;
}
break;
default:
goto unrecognized;
}
return;
unrecognized:
DPRINTF("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;
}
DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
creg, cop);
return 0;
}
#ifdef CONFIG_CURSES
/*
* FIXME:
* 1. curses windows will be blank when switching back
* 2. backspace is not handled yet
*/
static void putc_on_screen(unsigned char ch)
{
static WINDOW *localwin;
static int init;
if (!init) {
/* Assume 80 * 30 screen to minimize the implementation */
localwin = newwin(30, 80, 0, 0);
scrollok(localwin, TRUE);
init = TRUE;
}
if (isprint(ch)) {
wprintw(localwin, "%c", ch);
} else {
switch (ch) {
case '\n':
wprintw(localwin, "%c", ch);
break;
case '\r':
/* If '\r' is put before '\n', the curses window will destroy the
* last print line. And meanwhile, '\n' implifies '\r' inside. */
break;
default: /* Not handled, so just print it hex code */
wprintw(localwin, "-- 0x%x --", ch);
}
}
wrefresh(localwin);
}
#else
#define putc_on_screen(c) do { } while (0)
#endif
void helper_cp1_putc(target_ulong x)
{
putc_on_screen((unsigned char)x); /* Output to screen */
DPRINTF("%c", x); /* Output to stdout */
}
#endif
#ifdef CONFIG_USER_ONLY
void switch_mode(CPUUniCore32State *env, int mode)
{
if (mode != ASR_MODE_USER) {
cpu_abort(env, "Tried to switch out of user mode\n");
}
}
void do_interrupt(CPUUniCore32State *env)
{
cpu_abort(env, "NO interrupt in user mode\n");
}
int uc32_cpu_handle_mmu_fault(CPUUniCore32State *env, target_ulong address,
int access_type, int mmu_idx)
{
cpu_abort(env, "NO mmu fault in user mode\n");
return 1;
}
#endif