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gdbstub: Export host_to_gdb_errno File-I/O helper function

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Move host_to_gdb_errno from target/m68k/m68k-semi.c to
gdbstub/syscalls.c. Declare it in include/gdbstub/syscalls.h.

Add both newly added GDB File-I/O supported errno values, EIO and
ENOSYS, to the mapping.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Yodel Eldar <yodel.eldar@yodel.dev>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20260116014612.226183-3-yodel.eldar@yodel.dev>
Message-ID: <20260203115201.2387721-9-alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Yodel Eldar
2026-02-03 11:51:58 +00:00
committed by Alex Bennée
parent 6a64470216
commit c3fbf1a5f0
3 changed files with 45 additions and 29 deletions
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36
gdbstub/syscalls.c
View File

@@ -145,6 +145,42 @@ void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...)
gdb_syscall_handling(gdbserver_syscall_state.syscall_buf);
}
/*
* Map host error numbers to their GDB protocol counterparts.
* For the list of GDB File-I/O supported error numbers, please consult:
* https://sourceware.org/gdb/current/onlinedocs/gdb.html/Errno-Values.html
*/
int host_to_gdb_errno(int err)
{
#define E(X) case E##X: return GDB_E##X
switch (err) {
E(PERM);
E(NOENT);
E(INTR);
E(IO);
E(BADF);
E(ACCES);
E(FAULT);
E(BUSY);
E(EXIST);
E(NODEV);
E(NOTDIR);
E(ISDIR);
E(INVAL);
E(NFILE);
E(MFILE);
E(FBIG);
E(NOSPC);
E(SPIPE);
E(ROFS);
E(NOSYS);
E(NAMETOOLONG);
default:
return GDB_EUNKNOWN;
}
#undef E
}
/*
* GDB Command Handlers
*/

9
include/gdbstub/syscalls.h
View File

@@ -102,6 +102,15 @@ void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...);
*/
int use_gdb_syscalls(void);
/**
* host_to_gdb_errno: convert host errno to GDB errno value
* @err: errno from host
*
* Given an error number from the host, this helper function returns
* its GDB File-I/O specified representation.
*/
int host_to_gdb_errno(int err);
/**
* gdb_exit: exit gdb session, reporting inferior status
* @code: exit code reported

29
target/m68k/m68k-semi.c
View File

@@ -46,35 +46,6 @@
#define HOSTED_ISATTY 12
#define HOSTED_SYSTEM 13
static int host_to_gdb_errno(int err)
{
#define E(X) case E##X: return GDB_E##X
switch (err) {
E(PERM);
E(NOENT);
E(INTR);
E(BADF);
E(ACCES);
E(FAULT);
E(BUSY);
E(EXIST);
E(NODEV);
E(NOTDIR);
E(ISDIR);
E(INVAL);
E(NFILE);
E(MFILE);
E(FBIG);
E(NOSPC);
E(SPIPE);
E(ROFS);
E(NAMETOOLONG);
default:
return GDB_EUNKNOWN;
}
#undef E
}
static void m68k_semi_u32_cb(CPUState *cs, uint64_t ret, int err)
{
CPUM68KState *env = cpu_env(cs);