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/* |
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* Copyright (C) 2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: cpu_alpha_palcode.c,v 1.6 2005/08/04 00:25:08 debug Exp $ |
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* |
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* Alpha PALcode-related functionality. |
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*/ |
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|
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <ctype.h> |
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|
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#include "misc.h" |
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|
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|
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#ifndef ENABLE_ALPHA |
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|
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|
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#include "cpu_alpha.h" |
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|
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|
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void alpha_palcode_name(uint32_t palcode, char *buf, size_t buflen) |
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{ buf[0]='\0'; } |
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void alpha_palcode(struct cpu *cpu, uint32_t palcode) { } |
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|
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|
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#else /* ENABLE_ALPHA */ |
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|
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|
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#include "console.h" |
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#include "cpu.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "symbol.h" |
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|
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|
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/* |
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* alpha_palcode_name(): |
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* |
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* Return the name of a PALcode number, as a string. |
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*/ |
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void alpha_palcode_name(uint32_t palcode, char *buf, size_t buflen) |
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{ |
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switch (palcode) { |
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case 0x10: snprintf(buf, buflen, "PAL_OSF1_rdmces"); break; |
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case 0x11: snprintf(buf, buflen, "PAL_OSF1_wrmces"); break; |
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case 0x2b: snprintf(buf, buflen, "PAL_OSF1_wrfen"); break; |
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case 0x2d: snprintf(buf, buflen, "PAL_OSF1_wrvptptr"); break; |
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case 0x30: snprintf(buf, buflen, "PAL_OSF1_swpctx"); break; |
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case 0x31: snprintf(buf, buflen, "PAL_OSF1_wrval"); break; |
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case 0x32: snprintf(buf, buflen, "PAL_OSF1_rdval"); break; |
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case 0x33: snprintf(buf, buflen, "PAL_OSF1_tbi"); break; |
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case 0x34: snprintf(buf, buflen, "PAL_OSF1_wrent"); break; |
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case 0x35: snprintf(buf, buflen, "PAL_OSF1_swpipl"); break; |
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case 0x36: snprintf(buf, buflen, "PAL_OSF1_rdps"); break; |
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case 0x37: snprintf(buf, buflen, "PAL_OSF1_wrkgp"); break; |
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case 0x38: snprintf(buf, buflen, "PAL_OSF1_wrusp"); break; |
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case 0x39: snprintf(buf, buflen, "PAL_OSF1_wrperfmon"); break; |
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case 0x3a: snprintf(buf, buflen, "PAL_OSF1_rdusp"); break; |
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case 0x3c: snprintf(buf, buflen, "PAL_OSF1_whami"); break; |
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case 0x3d: snprintf(buf, buflen, "PAL_OSF1_retsys"); break; |
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case 0x3f: snprintf(buf, buflen, "PAL_OSF1_rti"); break; |
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case 0x83: snprintf(buf, buflen, "PAL_OSF1_callsys"); break; |
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case 0x86: snprintf(buf, buflen, "PAL_OSF1_imb"); break; |
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case 0x92: snprintf(buf, buflen, "PAL_OSF1_urti"); break; |
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case 0x3fffffe: snprintf(buf, buflen, "GXemul_PROM"); break; |
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default:snprintf(buf, buflen, "UNKNOWN 0x%x", palcode); |
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} |
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} |
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|
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|
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/* |
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* alpha_prom_call(): |
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*/ |
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void alpha_prom_call(struct cpu *cpu) |
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{ |
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uint64_t addr; |
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|
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switch (cpu->cd.alpha.r[ALPHA_A0]) { |
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case 0x02: |
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/* put string. a1 = channel, a2 = ptr to buf, a3 = len */ |
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for (addr = cpu->cd.alpha.r[ALPHA_A2]; |
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addr < cpu->cd.alpha.r[ALPHA_A2] + |
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cpu->cd.alpha.r[ALPHA_A3]; addr ++) { |
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unsigned char ch; |
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cpu->memory_rw(cpu, cpu->mem, addr, &ch, sizeof(ch), |
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MEM_READ, CACHE_DATA | NO_EXCEPTIONS); |
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console_putchar(cpu->machine->main_console_handle, ch); |
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} |
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cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.r[ALPHA_A3]; |
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break; |
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case 0x22: |
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fatal("[ Alpha PALcode: GXemul PROM call 0x22: TODO ]\n"); |
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break; |
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default:fatal("[ Alpha PALcode: GXemul PROM call, a0=0x%llx ]\n", |
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(long long)cpu->cd.alpha.r[ALPHA_A0]); |
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cpu->running = 0; |
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} |
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|
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/* Return from the PROM call. */ |
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cpu->pc = cpu->cd.alpha.r[ALPHA_RA]; |
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} |
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|
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|
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/* |
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* alpha_palcode(): |
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* |
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* Execute an Alpha PALcode instruction. (Most of these correspond to |
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* NetBSD/alpha code). |
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*/ |
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void alpha_palcode(struct cpu *cpu, uint32_t palcode) |
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{ |
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switch (palcode) { |
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case 0x10: /* PAL_OSF1_rdmces */ |
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/* TODO? Return something in v0. */ |
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break; |
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case 0x11: /* PAL_OSF1_wrmces */ |
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/* TODO? Set something to a0. */ |
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break; |
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case 0x2b: /* PAL_OSF1_wrfen */ |
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/* Floating point enable: a0 = 1 or 0. */ |
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/* TODO */ |
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break; |
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case 0x33: /* PAL_OSF1_tbi */ |
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/* a0 = op, a1 = vaddr */ |
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debug("[ Alpha PALcode: PAL_OSF1_tbi: a0=%lli a1=0x%llx ]\n", |
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(signed long long)cpu->cd.alpha.r[ALPHA_A0], |
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(long long)cpu->cd.alpha.r[ALPHA_A1]); |
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/* TODO */ |
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break; |
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case 0x34: /* PAL_OSF1_wrent (Write System Entry Address) */ |
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/* a0 = new vector, a1 = vector selector */ |
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debug("[ Alpha PALcode: PAL_OSF1_tbi: a0=%lli a1=0x%llx ]\n", |
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(signed long long)cpu->cd.alpha.r[ALPHA_A0], |
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(long long)cpu->cd.alpha.r[ALPHA_A1]); |
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/* TODO */ |
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break; |
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case 0x35: /* PAL_OSF1_swpipl */ |
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/* a0 = new ipl, v0 = return old ipl */ |
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cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.ipl; |
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cpu->cd.alpha.ipl = cpu->cd.alpha.r[ALPHA_A0]; |
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break; |
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case 0x36: /* PAL_OSF1_rdps */ |
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/* TODO */ |
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cpu->cd.alpha.r[ALPHA_V0] = 0; |
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break; |
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case 0x37: /* PAL_OSF1_wrkgp */ |
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/* "clobbers a0, t0, t8-t11" according to comments in |
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NetBSD sources */ |
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|
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/* KGP shoudl be set to a0. (TODO) */ |
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break; |
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case 0x3c: /* PAL_OSF1_whami */ |
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/* Returns CPU id in v0: */ |
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cpu->cd.alpha.r[ALPHA_V0] = cpu->cpu_id; |
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break; |
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case 0x83: /* PAL_OSF1_syscall */ |
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if (cpu->machine->userland_emul != NULL) |
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useremul_syscall(cpu, 0); |
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else { |
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fatal("[ Alpha PALcode: syscall, but no" |
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" syscall handler? ]\n"); |
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cpu->running = 0; |
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} |
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break; |
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case 0x86: /* PAL_OSF1_imb */ |
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/* TODO */ |
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break; |
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case 0x3fffffe: |
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alpha_prom_call(cpu); |
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break; |
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default:fatal("[ Alpha PALcode 0x%x unimplemented! ]\n", palcode); |
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cpu->running = 0; |
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} |
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} |
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|
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|
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#endif /* ENABLE_ALPHA */ |
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