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kernel: add yield syscall

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Matheus
2026-03-08 14:47:18 -03:00
parent 1991751d17
commit 5b44d3557a
3 changed files with 32 additions and 3 deletions
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patches/mlibc/jinx-working-patch.patch
+19 -2
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@@ -89,10 +89,10 @@ index 1ed110d..ded9114 100644
+void backtrace_symbols_fd(void *const *, int, int) {
}
diff --git mlibc-clean/sysdeps/astral/generic/generic.cpp mlibc-workdir/sysdeps/astral/generic/generic.cpp
index 939925e..5ee7fad 100644
index 939925e..eb6a6aa 100644
--- mlibc-clean/sysdeps/astral/generic/generic.cpp
+++ mlibc-workdir/sysdeps/astral/generic/generic.cpp
@@ -47,6 +47,12 @@ namespace mlibc {
@@ -47,6 +47,17 @@ namespace mlibc {
return 0;
}
@@ -101,6 +101,11 @@ index 939925e..5ee7fad 100644
+ // unlockpt is a no-op kernel side, so use this to check for an invalid pty
+ return sys_ioctl(fd, 0x13376167, NULL, &r);
+ }
+
+ void sys_yield() {
+ long r;
+ syscall(SYSCALL_YIELD, &r);
+ }
+
int sys_readv(int fd, const struct iovec *iovs, int iovc, ssize_t *bytes_read) {
long r;
@@ -121,3 +126,15 @@ index 7e4f2a1..a5f382d 100644
#ifdef __cplusplus
extern "C" {
diff --git mlibc-clean/sysdeps/astral/include/astral/syscall.h mlibc-workdir/sysdeps/astral/include/astral/syscall.h
index a6c4067..d1656ca 100644
--- mlibc-clean/sysdeps/astral/include/astral/syscall.h
+++ mlibc-workdir/sysdeps/astral/include/astral/syscall.h
@@ -103,6 +103,7 @@
#define SYSCALL_SYSINFO 96
#define SYSCALL_WRITEV 97
#define SYSCALL_READV 98
+#define SYSCALL_YIELD 99
#ifndef __MLIBC_ABI_ONLY