root / hw / alpha_palcode.c @ 6ebbf390
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/*
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* Alpha emulation - PALcode emulation for qemu.
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*
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* Copyright (c) 2007 Jocelyn Mayer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdint.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include "qemu.h" |
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#include "cpu.h" |
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#include "exec-all.h" |
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#if !defined (CONFIG_USER_ONLY)
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/* Shared handlers */
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static void pal_reset (CPUState *env); |
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/* Console handlers */
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static void pal_console_call (CPUState *env, uint32_t palcode); |
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/* OpenVMS handlers */
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static void pal_openvms_call (CPUState *env, uint32_t palcode); |
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/* UNIX / Linux handlers */
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static void pal_unix_call (CPUState *env, uint32_t palcode); |
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pal_handler_t pal_handlers[] = {
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/* Console handler */
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{
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.reset = &pal_reset, |
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.call_pal = &pal_console_call, |
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}, |
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/* OpenVMS handler */
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{
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.reset = &pal_reset, |
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.call_pal = &pal_openvms_call, |
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}, |
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/* UNIX / Linux handler */
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{
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.reset = &pal_reset, |
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.call_pal = &pal_unix_call, |
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}, |
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}; |
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#if 0
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/* One must explicitely check that the TB is valid and the FOE bit is reset */
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static void update_itb ()
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{
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/* This writes into a temp register, not the actual one */
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mtpr(TB_TAG);
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mtpr(TB_CTL);
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/* This commits the TB update */
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mtpr(ITB_PTE);
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}
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static void update_dtb ();
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{
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mtpr(TB_CTL);
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/* This write into a temp register, not the actual one */
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mtpr(TB_TAG);
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/* This commits the TB update */
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mtpr(DTB_PTE);
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}
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#endif
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static void pal_reset (CPUState *env) |
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{
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} |
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static void do_swappal (CPUState *env, uint64_t palid) |
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{
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pal_handler_t *pal_handler; |
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int status;
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status = 0;
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switch (palid) {
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case 0 ... 2: |
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pal_handler = &pal_handlers[palid]; |
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env->pal_handler = pal_handler; |
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env->ipr[IPR_PAL_BASE] = -1ULL;
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(*pal_handler->reset)(env); |
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break;
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case 3 ... 255: |
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/* Unknown identifier */
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env->ir[0] = 1; |
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return;
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default:
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/* We were given the entry point address */
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env->pal_handler = NULL;
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env->ipr[IPR_PAL_BASE] = palid; |
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env->pc = env->ipr[IPR_PAL_BASE]; |
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cpu_loop_exit(); |
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} |
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} |
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static void pal_console_call (CPUState *env, uint32_t palcode) |
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{
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uint64_t palid; |
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if (palcode < 0x00000080) { |
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/* Privileged palcodes */
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if (!(env->ps >> 3)) { |
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/* TODO: generate privilege exception */
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} |
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} |
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switch (palcode) {
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case 0x00000000: |
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/* HALT */
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/* REQUIRED */
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break;
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case 0x00000001: |
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/* CFLUSH */
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break;
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case 0x00000002: |
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/* DRAINA */
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/* REQUIRED */
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/* Implemented as no-op */
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break;
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case 0x00000009: |
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/* CSERVE */
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/* REQUIRED */
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break;
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case 0x0000000A: |
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/* SWPPAL */
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/* REQUIRED */
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palid = env->ir[16];
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do_swappal(env, palid); |
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break;
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case 0x00000080: |
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/* BPT */
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/* REQUIRED */
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break;
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case 0x00000081: |
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/* BUGCHK */
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/* REQUIRED */
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break;
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case 0x00000086: |
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/* IMB */
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/* REQUIRED */
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/* Implemented as no-op */
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break;
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case 0x0000009E: |
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/* RDUNIQUE */
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/* REQUIRED */
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break;
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case 0x0000009F: |
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/* WRUNIQUE */
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/* REQUIRED */
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break;
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case 0x000000AA: |
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/* GENTRAP */
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/* REQUIRED */
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break;
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default:
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break;
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} |
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} |
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static void pal_openvms_call (CPUState *env, uint32_t palcode) |
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{
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uint64_t palid, val, oldval; |
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if (palcode < 0x00000080) { |
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/* Privileged palcodes */
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if (!(env->ps >> 3)) { |
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/* TODO: generate privilege exception */
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} |
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} |
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switch (palcode) {
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case 0x00000000: |
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/* HALT */
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/* REQUIRED */
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break;
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case 0x00000001: |
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/* CFLUSH */
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break;
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case 0x00000002: |
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/* DRAINA */
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/* REQUIRED */
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/* Implemented as no-op */
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break;
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case 0x00000003: |
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/* LDQP */
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break;
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case 0x00000004: |
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/* STQP */
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break;
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case 0x00000005: |
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/* SWPCTX */
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break;
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case 0x00000006: |
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/* MFPR_ASN */
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if (cpu_alpha_mfpr(env, IPR_ASN, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x00000007: |
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/* MTPR_ASTEN */
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val = env->ir[16];
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if (cpu_alpha_mtpr(env, IPR_ASTEN, val, &oldval) == 1) |
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env->ir[0] = val;
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break;
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case 0x00000008: |
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/* MTPR_ASTSR */
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val = env->ir[16];
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if (cpu_alpha_mtpr(env, IPR_ASTSR, val, &oldval) == 1) |
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env->ir[0] = val;
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break;
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case 0x00000009: |
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/* CSERVE */
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/* REQUIRED */
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break;
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case 0x0000000A: |
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/* SWPPAL */
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/* REQUIRED */
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palid = env->ir[16];
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do_swappal(env, palid); |
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break;
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case 0x0000000B: |
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/* MFPR_FEN */
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if (cpu_alpha_mfpr(env, IPR_FEN, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x0000000C: |
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/* MTPR_FEN */
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val = env->ir[16];
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if (cpu_alpha_mtpr(env, IPR_FEN, val, &oldval) == 1) |
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env->ir[0] = val;
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break;
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case 0x0000000D: |
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/* MTPR_IPIR */
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val = env->ir[16];
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if (cpu_alpha_mtpr(env, IPR_IPIR, val, &oldval) == 1) |
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env->ir[0] = val;
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break;
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case 0x0000000E: |
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/* MFPR_IPL */
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if (cpu_alpha_mfpr(env, IPR_IPL, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x0000000F: |
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/* MTPR_IPL */
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val = env->ir[16];
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if (cpu_alpha_mtpr(env, IPR_IPL, val, &oldval) == 1) |
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env->ir[0] = val;
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break;
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case 0x00000010: |
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/* MFPR_MCES */
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if (cpu_alpha_mfpr(env, IPR_MCES, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x00000011: |
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/* MTPR_MCES */
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val = env->ir[16];
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if (cpu_alpha_mtpr(env, IPR_MCES, val, &oldval) == 1) |
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env->ir[0] = val;
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break;
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case 0x00000012: |
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/* MFPR_PCBB */
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if (cpu_alpha_mfpr(env, IPR_PCBB, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x00000013: |
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/* MFPR_PRBR */
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if (cpu_alpha_mfpr(env, IPR_PRBR, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x00000014: |
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/* MTPR_PRBR */
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val = env->ir[16];
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if (cpu_alpha_mtpr(env, IPR_PRBR, val, &oldval) == 1) |
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env->ir[0] = val;
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break;
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case 0x00000015: |
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/* MFPR_PTBR */
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if (cpu_alpha_mfpr(env, IPR_PTBR, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x00000016: |
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/* MFPR_SCBB */
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if (cpu_alpha_mfpr(env, IPR_SCBB, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x00000017: |
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/* MTPR_SCBB */
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val = env->ir[16];
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if (cpu_alpha_mtpr(env, IPR_SCBB, val, &oldval) == 1) |
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env->ir[0] = val;
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break;
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case 0x00000018: |
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/* MTPR_SIRR */
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val = env->ir[16];
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if (cpu_alpha_mtpr(env, IPR_SIRR, val, &oldval) == 1) |
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env->ir[0] = val;
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break;
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case 0x00000019: |
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/* MFPR_SISR */
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if (cpu_alpha_mfpr(env, IPR_SISR, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x0000001A: |
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/* MFPR_TBCHK */
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if (cpu_alpha_mfpr(env, IPR_TBCHK, &val) == 0) |
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env->ir[0] = val;
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break;
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case 0x0000001B: |
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/* MTPR_TBIA */
|
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val = env->ir[16];
|
| 320 |
if (cpu_alpha_mtpr(env, IPR_TBIA, val, &oldval) == 1) |
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env->ir[0] = val;
|
| 322 |
break;
|
| 323 |
case 0x0000001C: |
| 324 |
/* MTPR_TBIAP */
|
| 325 |
val = env->ir[16];
|
| 326 |
if (cpu_alpha_mtpr(env, IPR_TBIAP, val, &oldval) == 1) |
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env->ir[0] = val;
|
| 328 |
break;
|
| 329 |
case 0x0000001D: |
| 330 |
/* MTPR_TBIS */
|
| 331 |
val = env->ir[16];
|
| 332 |
if (cpu_alpha_mtpr(env, IPR_TBIS, val, &oldval) == 1) |
| 333 |
env->ir[0] = val;
|
| 334 |
break;
|
| 335 |
case 0x0000001E: |
| 336 |
/* MFPR_ESP */
|
| 337 |
if (cpu_alpha_mfpr(env, IPR_ESP, &val) == 0) |
| 338 |
env->ir[0] = val;
|
| 339 |
break;
|
| 340 |
case 0x0000001F: |
| 341 |
/* MTPR_ESP */
|
| 342 |
val = env->ir[16];
|
| 343 |
if (cpu_alpha_mtpr(env, IPR_ESP, val, &oldval) == 1) |
| 344 |
env->ir[0] = val;
|
| 345 |
break;
|
| 346 |
case 0x00000020: |
| 347 |
/* MFPR_SSP */
|
| 348 |
if (cpu_alpha_mfpr(env, IPR_SSP, &val) == 0) |
| 349 |
env->ir[0] = val;
|
| 350 |
break;
|
| 351 |
case 0x00000021: |
| 352 |
/* MTPR_SSP */
|
| 353 |
val = env->ir[16];
|
| 354 |
if (cpu_alpha_mtpr(env, IPR_SSP, val, &oldval) == 1) |
| 355 |
env->ir[0] = val;
|
| 356 |
break;
|
| 357 |
case 0x00000022: |
| 358 |
/* MFPR_USP */
|
| 359 |
if (cpu_alpha_mfpr(env, IPR_USP, &val) == 0) |
| 360 |
env->ir[0] = val;
|
| 361 |
break;
|
| 362 |
case 0x00000023: |
| 363 |
/* MTPR_USP */
|
| 364 |
val = env->ir[16];
|
| 365 |
if (cpu_alpha_mtpr(env, IPR_USP, val, &oldval) == 1) |
| 366 |
env->ir[0] = val;
|
| 367 |
break;
|
| 368 |
case 0x00000024: |
| 369 |
/* MTPR_TBISD */
|
| 370 |
val = env->ir[16];
|
| 371 |
if (cpu_alpha_mtpr(env, IPR_TBISD, val, &oldval) == 1) |
| 372 |
env->ir[0] = val;
|
| 373 |
break;
|
| 374 |
case 0x00000025: |
| 375 |
/* MTPR_TBISI */
|
| 376 |
val = env->ir[16];
|
| 377 |
if (cpu_alpha_mtpr(env, IPR_TBISI, val, &oldval) == 1) |
| 378 |
env->ir[0] = val;
|
| 379 |
break;
|
| 380 |
case 0x00000026: |
| 381 |
/* MFPR_ASTEN */
|
| 382 |
if (cpu_alpha_mfpr(env, IPR_ASTEN, &val) == 0) |
| 383 |
env->ir[0] = val;
|
| 384 |
break;
|
| 385 |
case 0x00000027: |
| 386 |
/* MFPR_ASTSR */
|
| 387 |
if (cpu_alpha_mfpr(env, IPR_ASTSR, &val) == 0) |
| 388 |
env->ir[0] = val;
|
| 389 |
break;
|
| 390 |
case 0x00000029: |
| 391 |
/* MFPR_VPTB */
|
| 392 |
if (cpu_alpha_mfpr(env, IPR_VPTB, &val) == 0) |
| 393 |
env->ir[0] = val;
|
| 394 |
break;
|
| 395 |
case 0x0000002A: |
| 396 |
/* MTPR_VPTB */
|
| 397 |
val = env->ir[16];
|
| 398 |
if (cpu_alpha_mtpr(env, IPR_VPTB, val, &oldval) == 1) |
| 399 |
env->ir[0] = val;
|
| 400 |
break;
|
| 401 |
case 0x0000002B: |
| 402 |
/* MTPR_PERFMON */
|
| 403 |
val = env->ir[16];
|
| 404 |
if (cpu_alpha_mtpr(env, IPR_PERFMON, val, &oldval) == 1) |
| 405 |
env->ir[0] = val;
|
| 406 |
break;
|
| 407 |
case 0x0000002E: |
| 408 |
/* MTPR_DATFX */
|
| 409 |
val = env->ir[16];
|
| 410 |
if (cpu_alpha_mtpr(env, IPR_DATFX, val, &oldval) == 1) |
| 411 |
env->ir[0] = val;
|
| 412 |
break;
|
| 413 |
case 0x0000003E: |
| 414 |
/* WTINT */
|
| 415 |
break;
|
| 416 |
case 0x0000003F: |
| 417 |
/* MFPR_WHAMI */
|
| 418 |
if (cpu_alpha_mfpr(env, IPR_WHAMI, &val) == 0) |
| 419 |
env->ir[0] = val;
|
| 420 |
break;
|
| 421 |
case 0x00000080: |
| 422 |
/* BPT */
|
| 423 |
/* REQUIRED */
|
| 424 |
break;
|
| 425 |
case 0x00000081: |
| 426 |
/* BUGCHK */
|
| 427 |
/* REQUIRED */
|
| 428 |
break;
|
| 429 |
case 0x00000082: |
| 430 |
/* CHME */
|
| 431 |
break;
|
| 432 |
case 0x00000083: |
| 433 |
/* CHMK */
|
| 434 |
break;
|
| 435 |
case 0x00000084: |
| 436 |
/* CHMS */
|
| 437 |
break;
|
| 438 |
case 0x00000085: |
| 439 |
/* CHMU */
|
| 440 |
break;
|
| 441 |
case 0x00000086: |
| 442 |
/* IMB */
|
| 443 |
/* REQUIRED */
|
| 444 |
/* Implemented as no-op */
|
| 445 |
break;
|
| 446 |
case 0x00000087: |
| 447 |
/* INSQHIL */
|
| 448 |
break;
|
| 449 |
case 0x00000088: |
| 450 |
/* INSQTIL */
|
| 451 |
break;
|
| 452 |
case 0x00000089: |
| 453 |
/* INSQHIQ */
|
| 454 |
break;
|
| 455 |
case 0x0000008A: |
| 456 |
/* INSQTIQ */
|
| 457 |
break;
|
| 458 |
case 0x0000008B: |
| 459 |
/* INSQUEL */
|
| 460 |
break;
|
| 461 |
case 0x0000008C: |
| 462 |
/* INSQUEQ */
|
| 463 |
break;
|
| 464 |
case 0x0000008D: |
| 465 |
/* INSQUEL/D */
|
| 466 |
break;
|
| 467 |
case 0x0000008E: |
| 468 |
/* INSQUEQ/D */
|
| 469 |
break;
|
| 470 |
case 0x0000008F: |
| 471 |
/* PROBER */
|
| 472 |
break;
|
| 473 |
case 0x00000090: |
| 474 |
/* PROBEW */
|
| 475 |
break;
|
| 476 |
case 0x00000091: |
| 477 |
/* RD_PS */
|
| 478 |
break;
|
| 479 |
case 0x00000092: |
| 480 |
/* REI */
|
| 481 |
break;
|
| 482 |
case 0x00000093: |
| 483 |
/* REMQHIL */
|
| 484 |
break;
|
| 485 |
case 0x00000094: |
| 486 |
/* REMQTIL */
|
| 487 |
break;
|
| 488 |
case 0x00000095: |
| 489 |
/* REMQHIQ */
|
| 490 |
break;
|
| 491 |
case 0x00000096: |
| 492 |
/* REMQTIQ */
|
| 493 |
break;
|
| 494 |
case 0x00000097: |
| 495 |
/* REMQUEL */
|
| 496 |
break;
|
| 497 |
case 0x00000098: |
| 498 |
/* REMQUEQ */
|
| 499 |
break;
|
| 500 |
case 0x00000099: |
| 501 |
/* REMQUEL/D */
|
| 502 |
break;
|
| 503 |
case 0x0000009A: |
| 504 |
/* REMQUEQ/D */
|
| 505 |
break;
|
| 506 |
case 0x0000009B: |
| 507 |
/* SWASTEN */
|
| 508 |
break;
|
| 509 |
case 0x0000009C: |
| 510 |
/* WR_PS_SW */
|
| 511 |
break;
|
| 512 |
case 0x0000009D: |
| 513 |
/* RSCC */
|
| 514 |
break;
|
| 515 |
case 0x0000009E: |
| 516 |
/* READ_UNQ */
|
| 517 |
/* REQUIRED */
|
| 518 |
break;
|
| 519 |
case 0x0000009F: |
| 520 |
/* WRITE_UNQ */
|
| 521 |
/* REQUIRED */
|
| 522 |
break;
|
| 523 |
case 0x000000A0: |
| 524 |
/* AMOVRR */
|
| 525 |
break;
|
| 526 |
case 0x000000A1: |
| 527 |
/* AMOVRM */
|
| 528 |
break;
|
| 529 |
case 0x000000A2: |
| 530 |
/* INSQHILR */
|
| 531 |
break;
|
| 532 |
case 0x000000A3: |
| 533 |
/* INSQTILR */
|
| 534 |
break;
|
| 535 |
case 0x000000A4: |
| 536 |
/* INSQHIQR */
|
| 537 |
break;
|
| 538 |
case 0x000000A5: |
| 539 |
/* INSQTIQR */
|
| 540 |
break;
|
| 541 |
case 0x000000A6: |
| 542 |
/* REMQHILR */
|
| 543 |
break;
|
| 544 |
case 0x000000A7: |
| 545 |
/* REMQTILR */
|
| 546 |
break;
|
| 547 |
case 0x000000A8: |
| 548 |
/* REMQHIQR */
|
| 549 |
break;
|
| 550 |
case 0x000000A9: |
| 551 |
/* REMQTIQR */
|
| 552 |
break;
|
| 553 |
case 0x000000AA: |
| 554 |
/* GENTRAP */
|
| 555 |
/* REQUIRED */
|
| 556 |
break;
|
| 557 |
case 0x000000AE: |
| 558 |
/* CLRFEN */
|
| 559 |
break;
|
| 560 |
default:
|
| 561 |
break;
|
| 562 |
} |
| 563 |
} |
| 564 |
|
| 565 |
static void pal_unix_call (CPUState *env, uint32_t palcode) |
| 566 |
{
|
| 567 |
uint64_t palid, val, oldval; |
| 568 |
|
| 569 |
if (palcode < 0x00000080) { |
| 570 |
/* Privileged palcodes */
|
| 571 |
if (!(env->ps >> 3)) { |
| 572 |
/* TODO: generate privilege exception */
|
| 573 |
} |
| 574 |
} |
| 575 |
switch (palcode) {
|
| 576 |
case 0x00000000: |
| 577 |
/* HALT */
|
| 578 |
/* REQUIRED */
|
| 579 |
break;
|
| 580 |
case 0x00000001: |
| 581 |
/* CFLUSH */
|
| 582 |
break;
|
| 583 |
case 0x00000002: |
| 584 |
/* DRAINA */
|
| 585 |
/* REQUIRED */
|
| 586 |
/* Implemented as no-op */
|
| 587 |
break;
|
| 588 |
case 0x00000009: |
| 589 |
/* CSERVE */
|
| 590 |
/* REQUIRED */
|
| 591 |
break;
|
| 592 |
case 0x0000000A: |
| 593 |
/* SWPPAL */
|
| 594 |
/* REQUIRED */
|
| 595 |
palid = env->ir[16];
|
| 596 |
do_swappal(env, palid); |
| 597 |
break;
|
| 598 |
case 0x0000000D: |
| 599 |
/* WRIPIR */
|
| 600 |
val = env->ir[16];
|
| 601 |
if (cpu_alpha_mtpr(env, IPR_IPIR, val, &oldval) == 1) |
| 602 |
env->ir[0] = val;
|
| 603 |
break;
|
| 604 |
case 0x00000010: |
| 605 |
/* RDMCES */
|
| 606 |
if (cpu_alpha_mfpr(env, IPR_MCES, &val) == 0) |
| 607 |
env->ir[0] = val;
|
| 608 |
break;
|
| 609 |
case 0x00000011: |
| 610 |
/* WRMCES */
|
| 611 |
val = env->ir[16];
|
| 612 |
if (cpu_alpha_mtpr(env, IPR_MCES, val, &oldval) == 1) |
| 613 |
env->ir[0] = val;
|
| 614 |
break;
|
| 615 |
case 0x0000002B: |
| 616 |
/* WRFEN */
|
| 617 |
val = env->ir[16];
|
| 618 |
if (cpu_alpha_mtpr(env, IPR_PERFMON, val, &oldval) == 1) |
| 619 |
env->ir[0] = val;
|
| 620 |
break;
|
| 621 |
case 0x0000002D: |
| 622 |
/* WRVPTPTR */
|
| 623 |
break;
|
| 624 |
case 0x00000030: |
| 625 |
/* SWPCTX */
|
| 626 |
break;
|
| 627 |
case 0x00000031: |
| 628 |
/* WRVAL */
|
| 629 |
break;
|
| 630 |
case 0x00000032: |
| 631 |
/* RDVAL */
|
| 632 |
break;
|
| 633 |
case 0x00000033: |
| 634 |
/* TBI */
|
| 635 |
val = env->ir[16];
|
| 636 |
if (cpu_alpha_mtpr(env, IPR_TBIS, val, &oldval) == 1) |
| 637 |
env->ir[0] = val;
|
| 638 |
break;
|
| 639 |
case 0x00000034: |
| 640 |
/* WRENT */
|
| 641 |
break;
|
| 642 |
case 0x00000035: |
| 643 |
/* SWPIPL */
|
| 644 |
break;
|
| 645 |
case 0x00000036: |
| 646 |
/* RDPS */
|
| 647 |
break;
|
| 648 |
case 0x00000037: |
| 649 |
/* WRKGP */
|
| 650 |
break;
|
| 651 |
case 0x00000038: |
| 652 |
/* WRUSP */
|
| 653 |
val = env->ir[16];
|
| 654 |
if (cpu_alpha_mtpr(env, IPR_USP, val, &oldval) == 1) |
| 655 |
env->ir[0] = val;
|
| 656 |
break;
|
| 657 |
case 0x00000039: |
| 658 |
/* WRPERFMON */
|
| 659 |
val = env->ir[16];
|
| 660 |
if (cpu_alpha_mtpr(env, IPR_PERFMON, val, &oldval) == 1) |
| 661 |
env->ir[0] = val;
|
| 662 |
break;
|
| 663 |
case 0x0000003A: |
| 664 |
/* RDUSP */
|
| 665 |
if (cpu_alpha_mfpr(env, IPR_USP, &val) == 0) |
| 666 |
env->ir[0] = val;
|
| 667 |
break;
|
| 668 |
case 0x0000003C: |
| 669 |
/* WHAMI */
|
| 670 |
if (cpu_alpha_mfpr(env, IPR_WHAMI, &val) == 0) |
| 671 |
env->ir[0] = val;
|
| 672 |
break;
|
| 673 |
case 0x0000003D: |
| 674 |
/* RETSYS */
|
| 675 |
break;
|
| 676 |
case 0x0000003E: |
| 677 |
/* WTINT */
|
| 678 |
break;
|
| 679 |
case 0x0000003F: |
| 680 |
/* RTI */
|
| 681 |
if (cpu_alpha_mfpr(env, IPR_WHAMI, &val) == 0) |
| 682 |
env->ir[0] = val;
|
| 683 |
break;
|
| 684 |
case 0x00000080: |
| 685 |
/* BPT */
|
| 686 |
/* REQUIRED */
|
| 687 |
break;
|
| 688 |
case 0x00000081: |
| 689 |
/* BUGCHK */
|
| 690 |
/* REQUIRED */
|
| 691 |
break;
|
| 692 |
case 0x00000083: |
| 693 |
/* CALLSYS */
|
| 694 |
break;
|
| 695 |
case 0x00000086: |
| 696 |
/* IMB */
|
| 697 |
/* REQUIRED */
|
| 698 |
/* Implemented as no-op */
|
| 699 |
break;
|
| 700 |
case 0x00000092: |
| 701 |
/* URTI */
|
| 702 |
break;
|
| 703 |
case 0x0000009E: |
| 704 |
/* RDUNIQUE */
|
| 705 |
/* REQUIRED */
|
| 706 |
break;
|
| 707 |
case 0x0000009F: |
| 708 |
/* WRUNIQUE */
|
| 709 |
/* REQUIRED */
|
| 710 |
break;
|
| 711 |
case 0x000000AA: |
| 712 |
/* GENTRAP */
|
| 713 |
/* REQUIRED */
|
| 714 |
break;
|
| 715 |
case 0x000000AE: |
| 716 |
/* CLRFEN */
|
| 717 |
break;
|
| 718 |
default:
|
| 719 |
break;
|
| 720 |
} |
| 721 |
} |
| 722 |
|
| 723 |
void call_pal (CPUState *env)
|
| 724 |
{
|
| 725 |
pal_handler_t *pal_handler = env->pal_handler; |
| 726 |
|
| 727 |
switch (env->exception_index) {
|
| 728 |
case EXCP_RESET:
|
| 729 |
(*pal_handler->reset)(env); |
| 730 |
break;
|
| 731 |
case EXCP_MCHK:
|
| 732 |
(*pal_handler->machine_check)(env); |
| 733 |
break;
|
| 734 |
case EXCP_ARITH:
|
| 735 |
(*pal_handler->arithmetic)(env); |
| 736 |
break;
|
| 737 |
case EXCP_INTERRUPT:
|
| 738 |
(*pal_handler->interrupt)(env); |
| 739 |
break;
|
| 740 |
case EXCP_DFAULT:
|
| 741 |
(*pal_handler->dfault)(env); |
| 742 |
break;
|
| 743 |
case EXCP_DTB_MISS_PAL:
|
| 744 |
(*pal_handler->dtb_miss_pal)(env); |
| 745 |
break;
|
| 746 |
case EXCP_DTB_MISS_NATIVE:
|
| 747 |
(*pal_handler->dtb_miss_native)(env); |
| 748 |
break;
|
| 749 |
case EXCP_UNALIGN:
|
| 750 |
(*pal_handler->unalign)(env); |
| 751 |
break;
|
| 752 |
case EXCP_ITB_MISS:
|
| 753 |
(*pal_handler->itb_miss)(env); |
| 754 |
break;
|
| 755 |
case EXCP_ITB_ACV:
|
| 756 |
(*pal_handler->itb_acv)(env); |
| 757 |
break;
|
| 758 |
case EXCP_OPCDEC:
|
| 759 |
(*pal_handler->opcdec)(env); |
| 760 |
break;
|
| 761 |
case EXCP_FEN:
|
| 762 |
(*pal_handler->fen)(env); |
| 763 |
break;
|
| 764 |
default:
|
| 765 |
if (env->exception_index >= EXCP_CALL_PAL &&
|
| 766 |
env->exception_index < EXCP_CALL_PALP) {
|
| 767 |
/* Unprivileged PAL call */
|
| 768 |
(*pal_handler->call_pal) |
| 769 |
(env, (env->exception_index - EXCP_CALL_PAL) >> 6);
|
| 770 |
} else if (env->exception_index >= EXCP_CALL_PALP && |
| 771 |
env->exception_index < EXCP_CALL_PALE) {
|
| 772 |
/* Privileged PAL call */
|
| 773 |
(*pal_handler->call_pal) |
| 774 |
(env, ((env->exception_index - EXCP_CALL_PALP) >> 6) + 0x80); |
| 775 |
} else {
|
| 776 |
/* Should never happen */
|
| 777 |
} |
| 778 |
break;
|
| 779 |
} |
| 780 |
env->ipr[IPR_EXC_ADDR] &= ~1;
|
| 781 |
} |
| 782 |
|
| 783 |
void pal_init (CPUState *env)
|
| 784 |
{
|
| 785 |
do_swappal(env, 0);
|
| 786 |
} |
| 787 |
|
| 788 |
#if 0
|
| 789 |
static uint64_t get_ptebase (CPUState *env, uint64_t vaddr)
|
| 790 |
{
|
| 791 |
uint64_t virbnd, ptbr;
|
| 792 |
|
| 793 |
if ((env->features & FEATURE_VIRBND)) {
|
| 794 |
cpu_alpha_mfpr(env, IPR_VIRBND, &virbnd);
|
| 795 |
if (vaddr >= virbnd)
|
| 796 |
cpu_alpha_mfpr(env, IPR_SYSPTBR, &ptbr);
|
| 797 |
else
|
| 798 |
cpu_alpha_mfpr(env, IPR_PTBR, &ptbr);
|
| 799 |
} else {
|
| 800 |
cpu_alpha_mfpr(env, IPR_PTBR, &ptbr);
|
| 801 |
}
|
| 802 |
|
| 803 |
return ptbr;
|
| 804 |
}
|
| 805 |
|
| 806 |
static int get_page_bits (CPUState *env)
|
| 807 |
{
|
| 808 |
/* XXX */
|
| 809 |
return 13;
|
| 810 |
}
|
| 811 |
|
| 812 |
static int get_pte (uint64_t *pfnp, int *zbitsp, int *protp,
|
| 813 |
uint64_t ptebase, int page_bits, uint64_t level,
|
| 814 |
int mmu_idx, int rw)
|
| 815 |
{
|
| 816 |
uint64_t pteaddr, pte, pfn;
|
| 817 |
uint8_t gh;
|
| 818 |
int ure, uwe, kre, kwe, foE, foR, foW, v, ret, ar, is_user;
|
| 819 |
|
| 820 |
/* XXX: TOFIX */
|
| 821 |
is_user = mmu_idx == MMU_USER_IDX;
|
| 822 |
pteaddr = (ptebase << page_bits) + (8 * level);
|
| 823 |
pte = ldq_raw(pteaddr);
|
| 824 |
/* Decode all interresting PTE fields */
|
| 825 |
pfn = pte >> 32;
|
| 826 |
uwe = (pte >> 13) & 1;
|
| 827 |
kwe = (pte >> 12) & 1;
|
| 828 |
ure = (pte >> 9) & 1;
|
| 829 |
kre = (pte >> 8) & 1;
|
| 830 |
gh = (pte >> 5) & 3;
|
| 831 |
foE = (pte >> 3) & 1;
|
| 832 |
foW = (pte >> 2) & 1;
|
| 833 |
foR = (pte >> 1) & 1;
|
| 834 |
v = pte & 1;
|
| 835 |
ret = 0;
|
| 836 |
if (!v)
|
| 837 |
ret = 0x1;
|
| 838 |
/* Check access rights */
|
| 839 |
ar = 0;
|
| 840 |
if (is_user) {
|
| 841 |
if (ure)
|
| 842 |
ar |= PAGE_READ;
|
| 843 |
if (uwe)
|
| 844 |
ar |= PAGE_WRITE;
|
| 845 |
if (rw == 1 && !uwe)
|
| 846 |
ret |= 0x2;
|
| 847 |
if (rw != 1 && !ure)
|
| 848 |
ret |= 0x2;
|
| 849 |
} else {
|
| 850 |
if (kre)
|
| 851 |
ar |= PAGE_READ;
|
| 852 |
if (kwe)
|
| 853 |
ar |= PAGE_WRITE;
|
| 854 |
if (rw == 1 && !kwe)
|
| 855 |
ret |= 0x2;
|
| 856 |
if (rw != 1 && !kre)
|
| 857 |
ret |= 0x2;
|
| 858 |
}
|
| 859 |
if (rw == 0 && foR)
|
| 860 |
ret |= 0x4;
|
| 861 |
if (rw == 2 && foE)
|
| 862 |
ret |= 0x8;
|
| 863 |
if (rw == 1 && foW)
|
| 864 |
ret |= 0xC;
|
| 865 |
*pfnp = pfn;
|
| 866 |
if (zbitsp != NULL)
|
| 867 |
*zbitsp = page_bits + (3 * gh);
|
| 868 |
if (protp != NULL)
|
| 869 |
*protp = ar;
|
| 870 |
|
| 871 |
return ret;
|
| 872 |
}
|
| 873 |
|
| 874 |
static int paddr_from_pte (uint64_t *paddr, int *zbitsp, int *prot,
|
| 875 |
uint64_t ptebase, int page_bits,
|
| 876 |
uint64_t vaddr, int mmu_idx, int rw)
|
| 877 |
{
|
| 878 |
uint64_t pfn, page_mask, lvl_mask, level1, level2, level3;
|
| 879 |
int lvl_bits, ret;
|
| 880 |
|
| 881 |
page_mask = (1ULL << page_bits) - 1ULL;
|
| 882 |
lvl_bits = page_bits - 3;
|
| 883 |
lvl_mask = (1ULL << lvl_bits) - 1ULL;
|
| 884 |
level3 = (vaddr >> page_bits) & lvl_mask;
|
| 885 |
level2 = (vaddr >> (page_bits + lvl_bits)) & lvl_mask;
|
| 886 |
level1 = (vaddr >> (page_bits + (2 * lvl_bits))) & lvl_mask;
|
| 887 |
/* Level 1 PTE */
|
| 888 |
ret = get_pte(&pfn, NULL, NULL, ptebase, page_bits, level1, 0, 0);
|
| 889 |
switch (ret) {
|
| 890 |
case 3:
|
| 891 |
/* Access violation */
|
| 892 |
return 2;
|
| 893 |
case 2:
|
| 894 |
/* translation not valid */
|
| 895 |
return 1;
|
| 896 |
default:
|
| 897 |
/* OK */
|
| 898 |
break;
|
| 899 |
}
|
| 900 |
/* Level 2 PTE */
|
| 901 |
ret = get_pte(&pfn, NULL, NULL, pfn, page_bits, level2, 0, 0);
|
| 902 |
switch (ret) {
|
| 903 |
case 3:
|
| 904 |
/* Access violation */
|
| 905 |
return 2;
|
| 906 |
case 2:
|
| 907 |
/* translation not valid */
|
| 908 |
return 1;
|
| 909 |
default:
|
| 910 |
/* OK */
|
| 911 |
break;
|
| 912 |
}
|
| 913 |
/* Level 3 PTE */
|
| 914 |
ret = get_pte(&pfn, zbitsp, prot, pfn, page_bits, level3, mmu_idx, rw);
|
| 915 |
if (ret & 0x1) {
|
| 916 |
/* Translation not valid */
|
| 917 |
ret = 1;
|
| 918 |
} else if (ret & 2) {
|
| 919 |
/* Access violation */
|
| 920 |
ret = 2;
|
| 921 |
} else {
|
| 922 |
switch (ret & 0xC) {
|
| 923 |
case 0:
|
| 924 |
/* OK */
|
| 925 |
ret = 0;
|
| 926 |
break;
|
| 927 |
case 0x4:
|
| 928 |
/* Fault on read */
|
| 929 |
ret = 3;
|
| 930 |
break;
|
| 931 |
case 0x8:
|
| 932 |
/* Fault on execute */
|
| 933 |
ret = 4;
|
| 934 |
break;
|
| 935 |
case 0xC:
|
| 936 |
/* Fault on write */
|
| 937 |
ret = 5;
|
| 938 |
break;
|
| 939 |
}
|
| 940 |
}
|
| 941 |
*paddr = (pfn << page_bits) | (vaddr & page_mask);
|
| 942 |
|
| 943 |
return 0;
|
| 944 |
}
|
| 945 |
|
| 946 |
static int virtual_to_physical (CPUState *env, uint64_t *physp,
|
| 947 |
int *zbitsp, int *protp,
|
| 948 |
uint64_t virtual, int mmu_idx, int rw)
|
| 949 |
{
|
| 950 |
uint64_t sva, ptebase;
|
| 951 |
int seg, page_bits, ret;
|
| 952 |
|
| 953 |
sva = ((int64_t)(virtual << (64 - VA_BITS))) >> (64 - VA_BITS);
|
| 954 |
if (sva != virtual)
|
| 955 |
seg = -1;
|
| 956 |
else
|
| 957 |
seg = sva >> (VA_BITS - 2);
|
| 958 |
virtual &= ~(0xFFFFFC0000000000ULL << (VA_BITS - 43));
|
| 959 |
ptebase = get_ptebase(env, virtual);
|
| 960 |
page_bits = get_page_bits(env);
|
| 961 |
ret = 0;
|
| 962 |
switch (seg) {
|
| 963 |
case 0:
|
| 964 |
/* seg1: 3 levels of PTE */
|
| 965 |
ret = paddr_from_pte(physp, zbitsp, protp, ptebase, page_bits,
|
| 966 |
virtual, mmu_idx, rw);
|
| 967 |
break;
|
| 968 |
case 1:
|
| 969 |
/* seg1: 2 levels of PTE */
|
| 970 |
ret = paddr_from_pte(physp, zbitsp, protp, ptebase, page_bits,
|
| 971 |
virtual, mmu_idx, rw);
|
| 972 |
break;
|
| 973 |
case 2:
|
| 974 |
/* kernel segment */
|
| 975 |
if (mmu_idx != 0) {
|
| 976 |
ret = 2;
|
| 977 |
} else {
|
| 978 |
*physp = virtual;
|
| 979 |
}
|
| 980 |
break;
|
| 981 |
case 3:
|
| 982 |
/* seg1: TB mapped */
|
| 983 |
ret = paddr_from_pte(physp, zbitsp, protp, ptebase, page_bits,
|
| 984 |
virtual, mmu_idx, rw);
|
| 985 |
break;
|
| 986 |
default:
|
| 987 |
ret = 1;
|
| 988 |
break;
|
| 989 |
}
|
| 990 |
|
| 991 |
return ret;
|
| 992 |
}
|
| 993 |
|
| 994 |
/* XXX: code provision */
|
| 995 |
int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
|
| 996 |
int mmu_idx, int is_softmmu)
|
| 997 |
{
|
| 998 |
uint64_t physical, page_size, end;
|
| 999 |
int prot, zbits, ret;
|
| 1000 |
|
| 1001 |
if (env->user_mode_only) {
|
| 1002 |
ret = 2;
|
| 1003 |
} else {
|
| 1004 |
ret = virtual_to_physical(env, &physical, &zbits, &prot,
|
| 1005 |
address, mmu_idx, rw);
|
| 1006 |
}
|
| 1007 |
switch (ret) {
|
| 1008 |
case 0:
|
| 1009 |
/* No fault */
|
| 1010 |
page_size = 1ULL << zbits;
|
| 1011 |
address &= ~(page_size - 1);
|
| 1012 |
for (end = physical + page_size; physical < end; physical += 0x1000) {
|
| 1013 |
ret = tlb_set_page(env, address, physical, prot,
|
| 1014 |
mmu_idx, is_softmmu);
|
| 1015 |
address += 0x1000;
|
| 1016 |
}
|
| 1017 |
break;
|
| 1018 |
#if 0
|
| 1019 |
case 1:
|
| 1020 |
env->exception_index = EXCP_DFAULT;
|
| 1021 |
env->ipr[IPR_EXC_ADDR] = address;
|
| 1022 |
ret = 1;
|
| 1023 |
break;
|
| 1024 |
case 2:
|
| 1025 |
env->exception_index = EXCP_ACCESS_VIOLATION;
|
| 1026 |
env->ipr[IPR_EXC_ADDR] = address;
|
| 1027 |
ret = 1;
|
| 1028 |
break;
|
| 1029 |
case 3:
|
| 1030 |
env->exception_index = EXCP_FAULT_ON_READ;
|
| 1031 |
env->ipr[IPR_EXC_ADDR] = address;
|
| 1032 |
ret = 1;
|
| 1033 |
break;
|
| 1034 |
case 4:
|
| 1035 |
env->exception_index = EXCP_FAULT_ON_EXECUTE;
|
| 1036 |
env->ipr[IPR_EXC_ADDR] = address;
|
| 1037 |
ret = 1;
|
| 1038 |
case 5:
|
| 1039 |
env->exception_index = EXCP_FAULT_ON_WRITE;
|
| 1040 |
env->ipr[IPR_EXC_ADDR] = address;
|
| 1041 |
ret = 1;
|
| 1042 |
#endif
|
| 1043 |
default:
|
| 1044 |
/* Should never happen */
|
| 1045 |
env->exception_index = EXCP_MCHK; |
| 1046 |
env->ipr[IPR_EXC_ADDR] = address; |
| 1047 |
ret = 1;
|
| 1048 |
break;
|
| 1049 |
} |
| 1050 |
|
| 1051 |
return ret;
|
| 1052 |
} |
| 1053 |
#endif
|
| 1054 |
|
| 1055 |
#else /* !defined (CONFIG_USER_ONLY) */ |
| 1056 |
void pal_init (CPUState *env)
|
| 1057 |
{
|
| 1058 |
} |
| 1059 |
|
| 1060 |
void call_pal (CPUState *env, int palcode) |
| 1061 |
{
|
| 1062 |
target_ulong ret; |
| 1063 |
|
| 1064 |
printf("%s: palcode %02x\n", __func__, palcode);
|
| 1065 |
if (logfile != NULL) |
| 1066 |
fprintf(logfile, "%s: palcode %02x\n", __func__, palcode);
|
| 1067 |
switch (palcode) {
|
| 1068 |
case 0x83: |
| 1069 |
/* CALLSYS */
|
| 1070 |
printf("CALLSYS n " TARGET_FMT_ld "\n", env->ir[0]); |
| 1071 |
if (logfile != NULL) |
| 1072 |
fprintf(logfile, "CALLSYS n " TARGET_FMT_ld "\n", env->ir[0]); |
| 1073 |
ret = do_syscall(env, env->ir[IR_V0], env->ir[IR_A0], env->ir[IR_A1], |
| 1074 |
env->ir[IR_A2], env->ir[IR_A3], env->ir[IR_A4], |
| 1075 |
env->ir[IR_A5]); |
| 1076 |
env->ir[IR_A3] = ret; |
| 1077 |
if (ret > (target_ulong)(-515)) { |
| 1078 |
env->ir[IR_V0] = 1;
|
| 1079 |
} else {
|
| 1080 |
env->ir[IR_V0] = 0;
|
| 1081 |
} |
| 1082 |
break;
|
| 1083 |
case 0x9E: |
| 1084 |
/* RDUNIQUE */
|
| 1085 |
env->ir[IR_V0] = env->unique; |
| 1086 |
printf("RDUNIQUE: " TARGET_FMT_lx "\n", env->unique); |
| 1087 |
break;
|
| 1088 |
case 0x9F: |
| 1089 |
/* WRUNIQUE */
|
| 1090 |
env->unique = env->ir[IR_A0]; |
| 1091 |
printf("WRUNIQUE: " TARGET_FMT_lx "\n", env->unique); |
| 1092 |
break;
|
| 1093 |
default:
|
| 1094 |
printf("%s: unhandled palcode %02x\n", __func__, palcode);
|
| 1095 |
if (logfile != NULL) |
| 1096 |
fprintf(logfile, "%s: unhandled palcode %02x\n",
|
| 1097 |
__func__, palcode); |
| 1098 |
exit(1);
|
| 1099 |
} |
| 1100 |
} |
| 1101 |
#endif
|