mii/qemu
1
0
Fork 0
mirror of https://github.com/mii443/qemu.git synced 2025-12-03 11:08:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

semihosting: Split out semihost_sys_rename

Browse Source 
Split out the non-ARM specific portions of SYS_RENAME to a
reusable function.

Reviewed-by: Luc Michel <lmichel@kalray.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2022-04-29 10:11:31 -07:00
parent d49e79b8e2
commit 25a95da0be
3 changed files with 62 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
semihosting/syscalls.c
View File

@@ -145,6 +145,26 @@ static void gdb_remove(CPUState *cs, gdb_syscall_complete_cb complete,
gdb_do_syscall(complete, "unlink,%s", fname, len);
}
static void gdb_rename(CPUState *cs, gdb_syscall_complete_cb complete,
target_ulong oname, target_ulong oname_len,
target_ulong nname, target_ulong nname_len)
{
int olen, nlen;
olen = validate_strlen(cs, oname, oname_len);
if (olen < 0) {
complete(cs, -1, -olen);
return;
}
nlen = validate_strlen(cs, nname, nname_len);
if (nlen < 0) {
complete(cs, -1, -nlen);
return;
}
gdb_do_syscall(complete, "rename,%s,%s", oname, olen, nname, nlen);
}
/*
* Host semihosting syscall implementations.
*/
@@ -307,6 +327,32 @@ static void host_remove(CPUState *cs, gdb_syscall_complete_cb complete,
unlock_user(p, fname, 0);
}
static void host_rename(CPUState *cs, gdb_syscall_complete_cb complete,
target_ulong oname, target_ulong oname_len,
target_ulong nname, target_ulong nname_len)
{
CPUArchState *env G_GNUC_UNUSED = cs->env_ptr;
char *ostr, *nstr;
int ret;
ret = validate_lock_user_string(&ostr, cs, oname, oname_len);
if (ret < 0) {
complete(cs, -1, -ret);
return;
}
ret = validate_lock_user_string(&nstr, cs, nname, nname_len);
if (ret < 0) {
unlock_user(ostr, oname, 0);
complete(cs, -1, -ret);
return;
}
ret = rename(ostr, nstr);
complete(cs, ret, ret ? errno : 0);
unlock_user(ostr, oname, 0);
unlock_user(nstr, nname, 0);
}
/*
* Static file semihosting syscall implementations.
*/
@@ -562,3 +608,14 @@ void semihost_sys_remove(CPUState *cs, gdb_syscall_complete_cb complete,
host_remove(cs, complete, fname, fname_len);
}
}
void semihost_sys_rename(CPUState *cs, gdb_syscall_complete_cb complete,
target_ulong oname, target_ulong oname_len,
target_ulong nname, target_ulong nname_len)
{
if (use_gdb_syscalls()) {
gdb_rename(cs, complete, oname, oname_len, nname, nname_len);
} else {
host_rename(cs, complete, oname, oname_len, nname, nname_len);
}
}