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[PATCH v3 31/49] semihosting: Split out semihost_sys_remove
From: |
Richard Henderson |
Subject: |
[PATCH v3 31/49] semihosting: Split out semihost_sys_remove |
Date: |
Fri, 20 May 2022 17:03:42 -0700 |
Split out the non-ARM specific portions of SYS_REMOVE to a
reusable function.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/semihosting/syscalls.h | 3 +++
semihosting/arm-compat-semi.c | 13 +----------
semihosting/syscalls.c | 40 ++++++++++++++++++++++++++++++++++
3 files changed, 44 insertions(+), 12 deletions(-)
diff --git a/include/semihosting/syscalls.h b/include/semihosting/syscalls.h
index 1ae5ba6716..748a4b5e47 100644
--- a/include/semihosting/syscalls.h
+++ b/include/semihosting/syscalls.h
@@ -49,4 +49,7 @@ void semihost_sys_flen(CPUState *cs, gdb_syscall_complete_cb
fstat_cb,
gdb_syscall_complete_cb flen_cb,
int fd, target_ulong fstat_addr);
+void semihost_sys_remove(CPUState *cs, gdb_syscall_complete_cb complete,
+ target_ulong fname, target_ulong fname_len);
+
#endif /* SEMIHOSTING_SYSCALLS_H */
diff --git a/semihosting/arm-compat-semi.c b/semihosting/arm-compat-semi.c
index 5dd8c800cc..b4320939a1 100644
--- a/semihosting/arm-compat-semi.c
+++ b/semihosting/arm-compat-semi.c
@@ -470,18 +470,7 @@ void do_common_semihosting(CPUState *cs)
case TARGET_SYS_REMOVE:
GET_ARG(0);
GET_ARG(1);
- if (use_gdb_syscalls()) {
- gdb_do_syscall(common_semi_cb, "unlink,%s",
- arg0, (int)arg1 + 1);
- break;
- }
- s = lock_user_string(arg0);
- if (!s) {
- goto do_fault;
- }
- ret = remove(s);
- unlock_user(s, arg0, 0);
- common_semi_cb(cs, ret, ret ? errno : 0);
+ semihost_sys_remove(cs, common_semi_cb, arg0, arg1 + 1);
break;
case TARGET_SYS_RENAME:
diff --git a/semihosting/syscalls.c b/semihosting/syscalls.c
index 1425156bf6..3464896281 100644
--- a/semihosting/syscalls.c
+++ b/semihosting/syscalls.c
@@ -163,6 +163,18 @@ static void gdb_fstat(CPUState *cs,
gdb_syscall_complete_cb complete,
gdb_do_syscall(complete, "fstat,%x,%x", (target_ulong)gf->hostfd, addr);
}
+static void gdb_remove(CPUState *cs, gdb_syscall_complete_cb complete,
+ target_ulong fname, target_ulong fname_len)
+{
+ int len = validate_strlen(cs, fname, fname_len);
+ if (len < 0) {
+ complete(cs, -1, -len);
+ return;
+ }
+
+ gdb_do_syscall(complete, "unlink,%s", fname, len);
+}
+
/*
* Host semihosting syscall implementations.
*/
@@ -307,6 +319,24 @@ static void host_flen(CPUState *cs,
gdb_syscall_complete_cb complete,
}
}
+static void host_remove(CPUState *cs, gdb_syscall_complete_cb complete,
+ target_ulong fname, target_ulong fname_len)
+{
+ CPUArchState *env G_GNUC_UNUSED = cs->env_ptr;
+ char *p;
+ int ret;
+
+ ret = validate_lock_user_string(&p, cs, fname, fname_len);
+ if (ret < 0) {
+ complete(cs, -1, -ret);
+ return;
+ }
+
+ ret = remove(p);
+ complete(cs, ret, ret ? errno_for_gdb() : 0);
+ unlock_user(p, fname, 0);
+}
+
/*
* Static file semihosting syscall implementations.
*/
@@ -552,3 +582,13 @@ void semihost_sys_flen(CPUState *cs,
gdb_syscall_complete_cb fstat_cb,
g_assert_not_reached();
}
}
+
+void semihost_sys_remove(CPUState *cs, gdb_syscall_complete_cb complete,
+ target_ulong fname, target_ulong fname_len)
+{
+ if (use_gdb_syscalls()) {
+ gdb_remove(cs, complete, fname, fname_len);
+ } else {
+ host_remove(cs, complete, fname, fname_len);
+ }
+}
--
2.34.1
- Re: [PATCH v3 38/49] semihosting: Pass CPUState to qemu_semihosting_console_inc, (continued)
- [PATCH v3 32/49] semihosting: Split out semihost_sys_rename, Richard Henderson, 2022/05/20
- [PATCH v3 22/49] semihosting: Move GET_ARG/SET_ARG earlier in the file, Richard Henderson, 2022/05/20
- [PATCH v3 30/49] semihosting: Split out semihost_sys_flen, Richard Henderson, 2022/05/20
- [PATCH v3 15/49] include/exec: Move gdb_stat and gdb_timeval to gdbstub.h, Richard Henderson, 2022/05/20
- [PATCH v3 37/49] semihosting: Fix docs comment for qemu_semihosting_console_inc, Richard Henderson, 2022/05/20
- [PATCH v3 29/49] semihosting: Split out semihost_sys_isatty, Richard Henderson, 2022/05/20
- [PATCH v3 31/49] semihosting: Split out semihost_sys_remove,
Richard Henderson <=
- [PATCH v3 17/49] semihosting: Use struct gdb_stat in common_semi_flen_cb, Richard Henderson, 2022/05/20
- [PATCH v3 21/49] semihosting: Use env more often in do_common_semihosting, Richard Henderson, 2022/05/20
- [PATCH v3 28/49] semihosting: Split out semihost_sys_lseek, Richard Henderson, 2022/05/20
- [PATCH v3 34/49] semihosting: Create semihost_sys_{stat,fstat}, Richard Henderson, 2022/05/20
- [PATCH v3 35/49] semihosting: Create semihost_sys_gettimeofday, Richard Henderson, 2022/05/20
- [PATCH v3 14/49] include/exec: Move gdb open flags to gdbstub.h, Richard Henderson, 2022/05/20