e216256ae9
This replaces the exit calls by shutdown requests, ensuring a proper cleanup of Qemu. Features like net/vhost-vdpa.c are expecting qemu_cleanup to be called to remove their last residuals. Signed-off-by: Clément Chigot <chigot@adacore.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-ID: <20231003071427.188697-6-chigot@adacore.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* GDB Syscall support
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*
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* Copyright (c) 2023 Linaro Ltd
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*
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* SPDX-License-Identifier: LGPL-2.0+
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*/
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#ifndef _SYSCALLS_H_
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#define _SYSCALLS_H_
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/* For gdb file i/o remote protocol open flags. */
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#define GDB_O_RDONLY 0
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#define GDB_O_WRONLY 1
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#define GDB_O_RDWR 2
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#define GDB_O_APPEND 8
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#define GDB_O_CREAT 0x200
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#define GDB_O_TRUNC 0x400
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#define GDB_O_EXCL 0x800
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/* For gdb file i/o remote protocol errno values */
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#define GDB_EPERM 1
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#define GDB_ENOENT 2
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#define GDB_EINTR 4
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#define GDB_EBADF 9
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#define GDB_EACCES 13
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#define GDB_EFAULT 14
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#define GDB_EBUSY 16
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#define GDB_EEXIST 17
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#define GDB_ENODEV 19
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#define GDB_ENOTDIR 20
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#define GDB_EISDIR 21
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#define GDB_EINVAL 22
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#define GDB_ENFILE 23
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#define GDB_EMFILE 24
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#define GDB_EFBIG 27
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#define GDB_ENOSPC 28
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#define GDB_ESPIPE 29
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#define GDB_EROFS 30
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#define GDB_ENAMETOOLONG 91
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#define GDB_EUNKNOWN 9999
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/* For gdb file i/o remote protocol lseek whence. */
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#define GDB_SEEK_SET 0
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#define GDB_SEEK_CUR 1
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#define GDB_SEEK_END 2
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/* For gdb file i/o stat/fstat. */
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typedef uint32_t gdb_mode_t;
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typedef uint32_t gdb_time_t;
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struct gdb_stat {
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uint32_t gdb_st_dev; /* device */
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uint32_t gdb_st_ino; /* inode */
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gdb_mode_t gdb_st_mode; /* protection */
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uint32_t gdb_st_nlink; /* number of hard links */
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uint32_t gdb_st_uid; /* user ID of owner */
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uint32_t gdb_st_gid; /* group ID of owner */
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uint32_t gdb_st_rdev; /* device type (if inode device) */
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uint64_t gdb_st_size; /* total size, in bytes */
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uint64_t gdb_st_blksize; /* blocksize for filesystem I/O */
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uint64_t gdb_st_blocks; /* number of blocks allocated */
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gdb_time_t gdb_st_atime; /* time of last access */
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gdb_time_t gdb_st_mtime; /* time of last modification */
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gdb_time_t gdb_st_ctime; /* time of last change */
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} QEMU_PACKED;
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struct gdb_timeval {
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gdb_time_t tv_sec; /* second */
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uint64_t tv_usec; /* microsecond */
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} QEMU_PACKED;
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typedef void (*gdb_syscall_complete_cb)(CPUState *cpu, uint64_t ret, int err);
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/**
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* gdb_do_syscall:
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* @cb: function to call when the system call has completed
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* @fmt: gdb syscall format string
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* ...: list of arguments to interpolate into @fmt
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*
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* Send a GDB syscall request. This function will return immediately;
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* the callback function will be called later when the remote system
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* call has completed.
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*
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* @fmt should be in the 'call-id,parameter,parameter...' format documented
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* for the F request packet in the GDB remote protocol. A limited set of
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* printf-style format specifiers is supported:
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* %x - target_ulong argument printed in hex
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* %lx - 64-bit argument printed in hex
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* %s - string pointer (target_ulong) and length (int) pair
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*/
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void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...);
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/**
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* use_gdb_syscalls() - report if GDB should be used for syscalls
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*
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* This is mostly driven by the semihosting mode the user configures
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* but assuming GDB is allowed by that we report true if GDB is
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* connected to the stub.
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*/
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int use_gdb_syscalls(void);
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/**
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* gdb_exit: exit gdb session, reporting inferior status
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* @code: exit code reported
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*
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* This closes the session and sends a final packet to GDB reporting
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* the exit status of the program. It also cleans up any connections
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* detritus before returning.
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*/
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void gdb_exit(int code);
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/**
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* gdb_qemu_exit: ask qemu to exit
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* @code: exit code reported
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*
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* This requests qemu to exit. This function is allowed to return as
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* the exit request might be processed asynchronously by qemu backend.
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*/
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void gdb_qemu_exit(int code);
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#endif /* _SYSCALLS_H_ */
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