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kernel: archctl syscall

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Matheus
2023-05-10 21:20:31 -03:00
parent eb6edee82f
commit 0b0184de76
3 changed files with 60 additions and 7 deletions
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patches/mlibc/jinx-working-patch.patch
+29 -6
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@@ -71,7 +71,27 @@ index 0000000..0a0a4a0
+
diff --git mlibc-workdir/sysdeps/astral/generic/astral.cpp mlibc-workdir/sysdeps/astral/generic/astral.cpp
new file mode 100644
index 0000000..e69de29
index 0000000..7d5b1e3
--- /dev/null
+++ mlibc-workdir/sysdeps/astral/generic/astral.cpp
@@ -0,0 +1,17 @@
+#include <astral/archctl.h>
+#include <errno.h>
+
+#define ARCH_CTL_GSBASE 0
+#define ARCH_CTL_FSBASE 1
+
+#ifndef MLIBC_BUILDING_RTDL
+
+int syscall_archctl(int func, void *arg) {
+ long ret;
+ long error = syscall(SYSCALL_ARCHCTL, &ret, func, (uint64_t)arg);
+ if (error)
+ errno = error;
+ return error ? -1 : ret;
+}
+
+#endif
diff --git mlibc-workdir/sysdeps/astral/generic/entry.cpp mlibc-workdir/sysdeps/astral/generic/entry.cpp
new file mode 100644
index 0000000..e5b087a
@@ -113,10 +133,10 @@ index 0000000..e5b087a
+
diff --git mlibc-workdir/sysdeps/astral/generic/generic.cpp mlibc-workdir/sysdeps/astral/generic/generic.cpp
new file mode 100644
index 0000000..0f88fe5
index 0000000..1bf8c55
--- /dev/null
+++ mlibc-workdir/sysdeps/astral/generic/generic.cpp
@@ -0,0 +1,152 @@
@@ -0,0 +1,154 @@
+#include <bits/ensure.h>
+#include <mlibc/debug.hpp>
+#include <mlibc/all-sysdeps.hpp>
@@ -197,7 +217,8 @@ index 0000000..0f88fe5
+ }
+
+ int sys_tcb_set(void *pointer) {
+ return ENOSYS;
+ long r;
+ return syscall(SYSCALL_ARCHCTL, &r, ARCH_CTL_FSBASE, (uint64_t)pointer);
+ }
+
+ int sys_futex_wait(int *pointer, int expected, const struct timespec *time) {
@@ -236,6 +257,7 @@ index 0000000..0f88fe5
+ int sys_write(int fd, const void *buff, size_t count, ssize_t *bytes_written) {
+ return ENOSYS;
+ }
+
+ int sys_seek(int fd, off_t offset, int whence, off_t *new_offset) {
+ long ret = 0;
+ long error = syscall(SYSCALL_SEEK, &ret, fd, offset, whence);
@@ -288,10 +310,10 @@ index 0000000..990eca0
+#endif
diff --git mlibc-workdir/sysdeps/astral/include/astral/syscall.h mlibc-workdir/sysdeps/astral/include/astral/syscall.h
new file mode 100644
index 0000000..bb2e40d
index 0000000..2d4b960
--- /dev/null
+++ mlibc-workdir/sysdeps/astral/include/astral/syscall.h
@@ -0,0 +1,29 @@
@@ -0,0 +1,30 @@
+#ifndef _SYSCALL_H_INCLUDE
+#define _SYSCALL_H_INCLUDE
+
@@ -301,6 +323,7 @@ index 0000000..bb2e40d
+#define SYSCALL_READ 3
+#define SYSCALL_SEEK 4
+#define SYSCALL_CLOSE 5
+#define SYSCALL_ARCHCTL 6
+
+#include <stddef.h>
+#include <stdint.h>