mirror of
https://github.com/yuzu-emu/unicorn
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114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/*
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* m68k/ColdFire Semihosting syscall interface
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*
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* Copyright (c) 2005-2007 CodeSourcery.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include "unicorn/platform.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include "cpu.h"
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#if defined(CONFIG_USER_ONLY)
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#include "qemu.h"
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#define SEMIHOSTING_HEAP_SIZE (128 * 1024 * 1024)
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#else
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#include "qemu-common.h"
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#include "exec/softmmu-semi.h"
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#endif
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#include "sysemu/sysemu.h"
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#define HOSTED_EXIT 0
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#define HOSTED_INIT_SIM 1
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#define HOSTED_OPEN 2
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#define HOSTED_CLOSE 3
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#define HOSTED_READ 4
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#define HOSTED_WRITE 5
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#define HOSTED_LSEEK 6
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#define HOSTED_RENAME 7
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#define HOSTED_UNLINK 8
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#define HOSTED_STAT 9
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#define HOSTED_FSTAT 10
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#define HOSTED_GETTIMEOFDAY 11
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#define HOSTED_ISATTY 12
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#define HOSTED_SYSTEM 13
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static void translate_stat(CPUM68KState *env, target_ulong addr, struct stat *s)
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{
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}
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static void m68k_semi_return_u32(CPUM68KState *env, uint32_t ret, uint32_t err)
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{
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target_ulong args = env->dregs[1];
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if (put_user_u32(ret, args) ||
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put_user_u32(err, args + 4)) {
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/* The m68k semihosting ABI does not provide any way to report this
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* error to the guest, so the best we can do is log it in qemu.
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* It is always a guest error not to pass us a valid argument block.
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*/
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qemu_log_mask(LOG_GUEST_ERROR, "m68k-semihosting: return value "
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"discarded because argument block not writable\n");
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}
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}
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static void m68k_semi_return_u64(CPUM68KState *env, uint64_t ret, uint32_t err)
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{
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target_ulong args = env->dregs[1];
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if (put_user_u32(ret >> 32, args) ||
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put_user_u32(ret, args + 4) ||
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put_user_u32(err, args + 8)) {
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/* No way to report this via m68k semihosting ABI; just log it */
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qemu_log_mask(LOG_GUEST_ERROR, "m68k-semihosting: return value "
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"discarded because argument block not writable\n");
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}
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}
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static int m68k_semi_is_fseek;
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static void m68k_semi_cb(CPUState *cs, target_ulong ret, target_ulong err)
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{
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M68kCPU *cpu = M68K_CPU(cs->uc, cs);
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CPUM68KState *env = &cpu->env;
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if (m68k_semi_is_fseek) {
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/* FIXME: We've already lost the high bits of the fseek
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return value. */
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m68k_semi_return_u64(env, ret, err);
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m68k_semi_is_fseek = 0;
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} else {
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m68k_semi_return_u32(env, ret, err);
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}
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}
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/* Read the input value from the argument block; fail the semihosting
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* call if the memory read fails.
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*/
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#define GET_ARG(n) do { \
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if (get_user_ual(arg ## n, args + (n) * 4)) { \
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result = -1; \
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errno = EFAULT; \
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goto failed; \
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} \
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} while (0)
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void do_m68k_semihosting(CPUM68KState *env, int nr)
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{
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}
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