diff options
Diffstat (limited to 'qemu/target-mips/mips-semi.c')
-rw-r--r-- | qemu/target-mips/mips-semi.c | 373 |
1 files changed, 0 insertions, 373 deletions
diff --git a/qemu/target-mips/mips-semi.c b/qemu/target-mips/mips-semi.c deleted file mode 100644 index ed235de99..000000000 --- a/qemu/target-mips/mips-semi.c +++ /dev/null @@ -1,373 +0,0 @@ -/* - * Unified Hosting Interface syscalls. - * - * Copyright (c) 2015 Imagination Technologies - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "qemu/osdep.h" -#include "cpu.h" -#include "exec/helper-proto.h" -#include "exec/softmmu-semi.h" -#include "exec/semihost.h" - -typedef enum UHIOp { - UHI_exit = 1, - UHI_open = 2, - UHI_close = 3, - UHI_read = 4, - UHI_write = 5, - UHI_lseek = 6, - UHI_unlink = 7, - UHI_fstat = 8, - UHI_argc = 9, - UHI_argnlen = 10, - UHI_argn = 11, - UHI_plog = 13, - UHI_assert = 14, - UHI_pread = 19, - UHI_pwrite = 20, - UHI_link = 22 -} UHIOp; - -typedef struct UHIStat { - int16_t uhi_st_dev; - uint16_t uhi_st_ino; - uint32_t uhi_st_mode; - uint16_t uhi_st_nlink; - uint16_t uhi_st_uid; - uint16_t uhi_st_gid; - int16_t uhi_st_rdev; - uint64_t uhi_st_size; - uint64_t uhi_st_atime; - uint64_t uhi_st_spare1; - uint64_t uhi_st_mtime; - uint64_t uhi_st_spare2; - uint64_t uhi_st_ctime; - uint64_t uhi_st_spare3; - uint64_t uhi_st_blksize; - uint64_t uhi_st_blocks; - uint64_t uhi_st_spare4[2]; -} UHIStat; - -enum UHIOpenFlags { - UHIOpen_RDONLY = 0x0, - UHIOpen_WRONLY = 0x1, - UHIOpen_RDWR = 0x2, - UHIOpen_APPEND = 0x8, - UHIOpen_CREAT = 0x200, - UHIOpen_TRUNC = 0x400, - UHIOpen_EXCL = 0x800 -}; - -/* Errno values taken from asm-mips/errno.h */ -static uint16_t host_to_mips_errno[] = { - [ENAMETOOLONG] = 78, -#ifdef EOVERFLOW - [EOVERFLOW] = 79, -#endif -#ifdef ELOOP - [ELOOP] = 90, -#endif -}; - -static int errno_mips(int err) -{ - if (err < 0 || err >= ARRAY_SIZE(host_to_mips_errno)) { - return EINVAL; - } else if (host_to_mips_errno[err]) { - return host_to_mips_errno[err]; - } else { - return err; - } -} - -static int copy_stat_to_target(CPUMIPSState *env, const struct stat *src, - target_ulong vaddr) -{ - hwaddr len = sizeof(struct UHIStat); - UHIStat *dst = lock_user(VERIFY_WRITE, vaddr, len, 0); - if (!dst) { - errno = EFAULT; - return -1; - } - - dst->uhi_st_dev = tswap16(src->st_dev); - dst->uhi_st_ino = tswap16(src->st_ino); - dst->uhi_st_mode = tswap32(src->st_mode); - dst->uhi_st_nlink = tswap16(src->st_nlink); - dst->uhi_st_uid = tswap16(src->st_uid); - dst->uhi_st_gid = tswap16(src->st_gid); - dst->uhi_st_rdev = tswap16(src->st_rdev); - dst->uhi_st_size = tswap64(src->st_size); - dst->uhi_st_atime = tswap64(src->st_atime); - dst->uhi_st_mtime = tswap64(src->st_mtime); - dst->uhi_st_ctime = tswap64(src->st_ctime); -#ifdef _WIN32 - dst->uhi_st_blksize = 0; - dst->uhi_st_blocks = 0; -#else - dst->uhi_st_blksize = tswap64(src->st_blksize); - dst->uhi_st_blocks = tswap64(src->st_blocks); -#endif - unlock_user(dst, vaddr, len); - return 0; -} - -static int get_open_flags(target_ulong target_flags) -{ - int open_flags = 0; - - if (target_flags & UHIOpen_RDWR) { - open_flags |= O_RDWR; - } else if (target_flags & UHIOpen_WRONLY) { - open_flags |= O_WRONLY; - } else { - open_flags |= O_RDONLY; - } - - open_flags |= (target_flags & UHIOpen_APPEND) ? O_APPEND : 0; - open_flags |= (target_flags & UHIOpen_CREAT) ? O_CREAT : 0; - open_flags |= (target_flags & UHIOpen_TRUNC) ? O_TRUNC : 0; - open_flags |= (target_flags & UHIOpen_EXCL) ? O_EXCL : 0; - - return open_flags; -} - -static int write_to_file(CPUMIPSState *env, target_ulong fd, target_ulong vaddr, - target_ulong len, target_ulong offset) -{ - int num_of_bytes; - void *dst = lock_user(VERIFY_READ, vaddr, len, 1); - if (!dst) { - errno = EFAULT; - return -1; - } - - if (offset) { -#ifdef _WIN32 - num_of_bytes = 0; -#else - num_of_bytes = pwrite(fd, dst, len, offset); -#endif - } else { - num_of_bytes = write(fd, dst, len); - } - - unlock_user(dst, vaddr, 0); - return num_of_bytes; -} - -static int read_from_file(CPUMIPSState *env, target_ulong fd, - target_ulong vaddr, target_ulong len, - target_ulong offset) -{ - int num_of_bytes; - void *dst = lock_user(VERIFY_WRITE, vaddr, len, 0); - if (!dst) { - errno = EFAULT; - return -1; - } - - if (offset) { -#ifdef _WIN32 - num_of_bytes = 0; -#else - num_of_bytes = pread(fd, dst, len, offset); -#endif - } else { - num_of_bytes = read(fd, dst, len); - } - - unlock_user(dst, vaddr, len); - return num_of_bytes; -} - -static int copy_argn_to_target(CPUMIPSState *env, int arg_num, - target_ulong vaddr) -{ - int strsize = strlen(semihosting_get_arg(arg_num)) + 1; - char *dst = lock_user(VERIFY_WRITE, vaddr, strsize, 0); - if (!dst) { - return -1; - } - - strcpy(dst, semihosting_get_arg(arg_num)); - - unlock_user(dst, vaddr, strsize); - return 0; -} - -#define GET_TARGET_STRING(p, addr) \ - do { \ - p = lock_user_string(addr); \ - if (!p) { \ - gpr[2] = -1; \ - gpr[3] = EFAULT; \ - goto uhi_done; \ - } \ - } while (0) - -#define GET_TARGET_STRINGS_2(p, addr, p2, addr2) \ - do { \ - p = lock_user_string(addr); \ - if (!p) { \ - gpr[2] = -1; \ - gpr[3] = EFAULT; \ - goto uhi_done; \ - } \ - p2 = lock_user_string(addr2); \ - if (!p2) { \ - unlock_user(p, addr, 0); \ - gpr[2] = -1; \ - gpr[3] = EFAULT; \ - goto uhi_done; \ - } \ - } while (0) - -#define FREE_TARGET_STRING(p, gpr) \ - do { \ - unlock_user(p, gpr, 0); \ - } while (0) - -void helper_do_semihosting(CPUMIPSState *env) -{ - target_ulong *gpr = env->active_tc.gpr; - const UHIOp op = gpr[25]; - char *p, *p2; - - switch (op) { - case UHI_exit: - qemu_log("UHI(%d): exit(%d)\n", op, (int)gpr[4]); - exit(gpr[4]); - case UHI_open: - GET_TARGET_STRING(p, gpr[4]); - if (!strcmp("/dev/stdin", p)) { - gpr[2] = 0; - } else if (!strcmp("/dev/stdout", p)) { - gpr[2] = 1; - } else if (!strcmp("/dev/stderr", p)) { - gpr[2] = 2; - } else { - gpr[2] = open(p, get_open_flags(gpr[5]), gpr[6]); - gpr[3] = errno_mips(errno); - } - FREE_TARGET_STRING(p, gpr[4]); - break; - case UHI_close: - if (gpr[4] < 3) { - /* ignore closing stdin/stdout/stderr */ - gpr[2] = 0; - goto uhi_done; - } - gpr[2] = close(gpr[4]); - gpr[3] = errno_mips(errno); - break; - case UHI_read: - gpr[2] = read_from_file(env, gpr[4], gpr[5], gpr[6], 0); - gpr[3] = errno_mips(errno); - break; - case UHI_write: - gpr[2] = write_to_file(env, gpr[4], gpr[5], gpr[6], 0); - gpr[3] = errno_mips(errno); - break; - case UHI_lseek: - gpr[2] = lseek(gpr[4], gpr[5], gpr[6]); - gpr[3] = errno_mips(errno); - break; - case UHI_unlink: - GET_TARGET_STRING(p, gpr[4]); - gpr[2] = remove(p); - gpr[3] = errno_mips(errno); - FREE_TARGET_STRING(p, gpr[4]); - break; - case UHI_fstat: - { - struct stat sbuf; - memset(&sbuf, 0, sizeof(sbuf)); - gpr[2] = fstat(gpr[4], &sbuf); - gpr[3] = errno_mips(errno); - if (gpr[2]) { - goto uhi_done; - } - gpr[2] = copy_stat_to_target(env, &sbuf, gpr[5]); - gpr[3] = errno_mips(errno); - } - break; - case UHI_argc: - gpr[2] = semihosting_get_argc(); - break; - case UHI_argnlen: - if (gpr[4] >= semihosting_get_argc()) { - gpr[2] = -1; - goto uhi_done; - } - gpr[2] = strlen(semihosting_get_arg(gpr[4])); - break; - case UHI_argn: - if (gpr[4] >= semihosting_get_argc()) { - gpr[2] = -1; - goto uhi_done; - } - gpr[2] = copy_argn_to_target(env, gpr[4], gpr[5]); - break; - case UHI_plog: - GET_TARGET_STRING(p, gpr[4]); - p2 = strstr(p, "%d"); - if (p2) { - int char_num = p2 - p; - char *buf = g_malloc(char_num + 1); - strncpy(buf, p, char_num); - buf[char_num] = '\0'; - gpr[2] = printf("%s%d%s", buf, (int)gpr[5], p2 + 2); - g_free(buf); - } else { - gpr[2] = printf("%s", p); - } - FREE_TARGET_STRING(p, gpr[4]); - break; - case UHI_assert: - GET_TARGET_STRINGS_2(p, gpr[4], p2, gpr[5]); - printf("assertion '"); - printf("\"%s\"", p); - printf("': file \"%s\", line %d\n", p2, (int)gpr[6]); - FREE_TARGET_STRING(p2, gpr[5]); - FREE_TARGET_STRING(p, gpr[4]); - abort(); - break; - case UHI_pread: - gpr[2] = read_from_file(env, gpr[4], gpr[5], gpr[6], gpr[7]); - gpr[3] = errno_mips(errno); - break; - case UHI_pwrite: - gpr[2] = write_to_file(env, gpr[4], gpr[5], gpr[6], gpr[7]); - gpr[3] = errno_mips(errno); - break; -#ifndef _WIN32 - case UHI_link: - GET_TARGET_STRINGS_2(p, gpr[4], p2, gpr[5]); - gpr[2] = link(p, p2); - gpr[3] = errno_mips(errno); - FREE_TARGET_STRING(p2, gpr[5]); - FREE_TARGET_STRING(p, gpr[4]); - break; -#endif - default: - fprintf(stderr, "Unknown UHI operation %d\n", op); - abort(); - } -uhi_done: - return; -} |