Setup project skeleton

23 files changed, 617 insertions, 0 deletions

diff --git a/src/drv/ps1/bios/CMakeLists.txt b/src/drv/ps1/bios/CMakeLists.txt
new file mode 100644
index 0000000..ebc0937
--- /dev/null
+++ b/src/drv/ps1/bios/CMakeLists.txt
@@ -0,0 +1,19 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(drv_ps1_bios)
+add_subdirectory(src)
+target_include_directories(drv_ps1_bios INTERFACE include)
diff --git a/src/drv/ps1/bios/include/drv/ps1/bios.h b/src/drv/ps1/bios/include/drv/ps1/bios.h
new file mode 100644
index 0000000..ca53194
--- /dev/null
+++ b/src/drv/ps1/bios/include/drv/ps1/bios.h
@@ -0,0 +1,128 @@
+/*
+ * wnix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef PS1_BIOS_H
+#define PS1_BIOS_H
+
+#include <stdint.h>
+#include <setjmp.h>
+
+#if __GNUC__
+#define PRINTF_ATTR __attribute__ ((format (__printf__, 1, 2)))
+#else
+#define PRINTF_ATTR
+#endif
+
+enum
+{
+    CLASS_IRQ0 = (long)0xf0000001,
+    CLASS_GPU,
+    CLASS_CDROM,
+    CLASS_DMA,
+    CLASS_RTC0  = (long)0xf2000000,
+    CLASS_RTC1,
+    CLASS_RTC2,
+    CLASS_VBLANK,
+    CLASS_CONTROLLER = (long)0xf0000008,
+    CLASS_SPU,
+    CLASS_PIO,
+    CLASS_SIO
+};
+
+enum
+{
+    MODE_EXECUTE = 0x1000,
+    MODE_READY = 0x2000
+};
+
+enum
+{
+    SPEC_COUNTER_ZERO = 1,
+    SPEC_INTERRUPTED = 1 << 1,
+    SPEC_EOF = 1 << 2,
+    SPEC_FILE_CLOSED = 1 << 3,
+    SPEC_COMMAND_ACK = 1 << 4,
+    SPEC_COMMAND_COMPLETE = 1 << 5,
+    SPEC_DATA_READY = 1 << 6,
+    SPEC_DATA_END = 1 << 7,
+    SPEC_TIMEOUT = 1 << 8,
+    SPEC_UNKNOWN_CMD = 1 << 9,
+    SPEC_END_READ_BUF = 1 << 10,
+    SPEC_END_WRITE_BUF = 1 << 11,
+    SPEC_GENERAL_INTERRUPT = 1 << 12,
+    SPEC_NEW_DEVICE = 1 << 13,
+    SPEC_SYSCALL = 1 << 14,
+    SPEC_ERROR = 1 << 15,
+    SPEC_WRITE_ERROR,
+    SPEC_DOMAIN_ERROR = 0x301,
+    SPEC_RANGE_RNG
+};
+
+struct CdAsyncSeekL
+{
+    uint8_t minutes, seconds, frames;
+};
+
+union SetMode
+{
+    struct
+    {
+        uint8_t cdda :1, autopause :1, report :1, xa_filter :1, ignore :1,
+            whole_sector :1, xa_adpcm :1, speed :1;
+    } bits;
+
+    uint8_t mask;
+};
+
+struct CdAsyncReadSector_mode
+{
+    union SetMode mode;
+    union
+    {
+        struct
+        {
+            uint8_t reads :1, :7;
+        } bits;
+    } read;
+
+    uint16_t reserved;
+};
+
+int EnterCriticalSection(void);
+void ExitCriticalSection(void);
+void GetConf(uint32_t *events, uint32_t *tcb, void **stacktop);
+void SetConf(uint32_t events, uint32_t tcb, void *stacktop);
+int OpenEvent(int class, int spec, int mode, int (*f)(void));
+int EnableEvent(int event);
+int DisableEvent(int event);
+int CloseEvent(int event);
+int TestEvent(int event);
+int WaitEvent(int event);
+int CdAsyncGetStatus(uint8_t *response);
+int CdAsyncReadSector(unsigned count, void *dst,
+    struct CdAsyncReadSector_mode mode);
+int CdAsyncSeekL(const struct CdAsyncSeekL *seekl);
+int Printf(const char *fmt, ...) PRINTF_ATTR;
+void SetCustomExitFromException(jmp_buf jmp);
+void CdInit(void);
+void CdRemove(void);
+int SaveState(jmp_buf buf);
+void RestoreState(jmp_buf buf, int value);
+void ReturnFromException(void);
+
+#endif
diff --git a/src/drv/ps1/bios/src/CMakeLists.txt b/src/drv/ps1/bios/src/CMakeLists.txt
new file mode 100644
index 0000000..67ea62b
--- /dev/null
+++ b/src/drv/ps1/bios/src/CMakeLists.txt
@@ -0,0 +1,38 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(drv_ps1_bios PRIVATE
+    CdAsyncGetStatus.s
+    CdAsyncReadSector.s
+    CdAsyncSeekL.s
+    CdInit.s
+    CdRemove.s
+    CloseEvent.s
+    DisableEvent.s
+    EnableEvent.s
+    EnterCriticalSection.s
+    ExitCriticalSection.s
+    GetConf.s
+    OpenEvent.s
+    Printf.s
+    RestoreState.s
+    ReturnFromException.s
+    SaveState.s
+    SetConf.s
+    SetCustomExitFromException.s
+    TestEvent.s
+    WaitEvent.s
+)
diff --git a/src/drv/ps1/bios/src/CdAsyncGetStatus.s b/src/drv/ps1/bios/src/CdAsyncGetStatus.s
new file mode 100644
index 0000000..18922da
--- /dev/null
+++ b/src/drv/ps1/bios/src/CdAsyncGetStatus.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CdAsyncGetStatus
+
+CdAsyncGetStatus:
+    li $9, 0x7c
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/CdAsyncReadSector.s b/src/drv/ps1/bios/src/CdAsyncReadSector.s
new file mode 100644
index 0000000..6411e12
--- /dev/null
+++ b/src/drv/ps1/bios/src/CdAsyncReadSector.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CdAsyncReadSector
+
+CdAsyncReadSector:
+    li $9, 0x7e
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/CdAsyncSeekL.s b/src/drv/ps1/bios/src/CdAsyncSeekL.s
new file mode 100644
index 0000000..529d116
--- /dev/null
+++ b/src/drv/ps1/bios/src/CdAsyncSeekL.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CdAsyncSeekL
+
+CdAsyncSeekL:
+    li $9, 0x78
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/CdInit.s b/src/drv/ps1/bios/src/CdInit.s
new file mode 100644
index 0000000..dcf3474
--- /dev/null
+++ b/src/drv/ps1/bios/src/CdInit.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CdInit
+
+CdInit:
+    li $9, 0x54
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/CdRemove.s b/src/drv/ps1/bios/src/CdRemove.s
new file mode 100644
index 0000000..e3bb34d
--- /dev/null
+++ b/src/drv/ps1/bios/src/CdRemove.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CdRemove
+
+CdRemove:
+    li $9, 0x56
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/CloseEvent.s b/src/drv/ps1/bios/src/CloseEvent.s
new file mode 100644
index 0000000..7dd47e3
--- /dev/null
+++ b/src/drv/ps1/bios/src/CloseEvent.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global CloseEvent
+
+CloseEvent:
+    li $9, 0x9
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/DisableEvent.s b/src/drv/ps1/bios/src/DisableEvent.s
new file mode 100644
index 0000000..f32dcf8
--- /dev/null
+++ b/src/drv/ps1/bios/src/DisableEvent.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global DisableEvent
+
+DisableEvent:
+    li $9, 0xd
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/EnableEvent.s b/src/drv/ps1/bios/src/EnableEvent.s
new file mode 100644
index 0000000..f6da29d
--- /dev/null
+++ b/src/drv/ps1/bios/src/EnableEvent.s
@@ -0,0 +1,23 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.text
+
+.global EnableEvent
+
+EnableEvent:
+    li $9, 0xc
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/EnterCriticalSection.s b/src/drv/ps1/bios/src/EnterCriticalSection.s
new file mode 100644
index 0000000..c8302e0
--- /dev/null
+++ b/src/drv/ps1/bios/src/EnterCriticalSection.s
@@ -0,0 +1,25 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.text
+
+.global EnterCriticalSection
+
+EnterCriticalSection:
+    li $a0, 1
+    syscall
+    nop
+    jr $ra
+    nop
diff --git a/src/drv/ps1/bios/src/ExitCriticalSection.s b/src/drv/ps1/bios/src/ExitCriticalSection.s
new file mode 100644
index 0000000..198b040
--- /dev/null
+++ b/src/drv/ps1/bios/src/ExitCriticalSection.s
@@ -0,0 +1,23 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global ExitCriticalSection
+
+ExitCriticalSection:
+    li $a0, 2
+    syscall
+    nop
+    jr $ra
+    nop
diff --git a/src/drv/ps1/bios/src/GetConf.s b/src/drv/ps1/bios/src/GetConf.s
new file mode 100644
index 0000000..927b950
--- /dev/null
+++ b/src/drv/ps1/bios/src/GetConf.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global GetConf
+
+GetConf:
+    li $9, 0x9d
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/OpenEvent.s b/src/drv/ps1/bios/src/OpenEvent.s
new file mode 100644
index 0000000..dca7141
--- /dev/null
+++ b/src/drv/ps1/bios/src/OpenEvent.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global OpenEvent
+
+OpenEvent:
+    li $9, 0x8
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/Printf.s b/src/drv/ps1/bios/src/Printf.s
new file mode 100644
index 0000000..9e0a77f
--- /dev/null
+++ b/src/drv/ps1/bios/src/Printf.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global Printf
+
+Printf:
+    li $9, 0x3f
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/RestoreState.s b/src/drv/ps1/bios/src/RestoreState.s
new file mode 100644
index 0000000..c830296
--- /dev/null
+++ b/src/drv/ps1/bios/src/RestoreState.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global RestoreState
+
+RestoreState:
+    li $9, 0x14
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/ReturnFromException.s b/src/drv/ps1/bios/src/ReturnFromException.s
new file mode 100644
index 0000000..6af3bb3
--- /dev/null
+++ b/src/drv/ps1/bios/src/ReturnFromException.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global ReturnFromException
+
+ReturnFromException:
+    li $9, 0x17
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/SaveState.s b/src/drv/ps1/bios/src/SaveState.s
new file mode 100644
index 0000000..eb72ea3
--- /dev/null
+++ b/src/drv/ps1/bios/src/SaveState.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global SaveState
+
+SaveState:
+    li $9, 0x13
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/SetConf.s b/src/drv/ps1/bios/src/SetConf.s
new file mode 100644
index 0000000..5063667
--- /dev/null
+++ b/src/drv/ps1/bios/src/SetConf.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global SetConf
+
+SetConf:
+    li $9, 0x9c
+    j 0xa0
+    nop
diff --git a/src/drv/ps1/bios/src/SetCustomExitFromException.s b/src/drv/ps1/bios/src/SetCustomExitFromException.s
new file mode 100644
index 0000000..75cf8cc
--- /dev/null
+++ b/src/drv/ps1/bios/src/SetCustomExitFromException.s
@@ -0,0 +1,21 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.global SetCustomExitFromException
+
+SetCustomExitFromException:
+    li $9, 0x19
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/TestEvent.s b/src/drv/ps1/bios/src/TestEvent.s
new file mode 100644
index 0000000..af0edab
--- /dev/null
+++ b/src/drv/ps1/bios/src/TestEvent.s
@@ -0,0 +1,23 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.text
+
+.global TestEvent
+
+TestEvent:
+    li $9, 0xb
+    j 0xb0
+    nop
diff --git a/src/drv/ps1/bios/src/WaitEvent.s b/src/drv/ps1/bios/src/WaitEvent.s
new file mode 100644
index 0000000..8f58d52
--- /dev/null
+++ b/src/drv/ps1/bios/src/WaitEvent.s
@@ -0,0 +1,23 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+.text
+
+.global WaitEvent
+
+WaitEvent:
+    li $9, 0xa
+    j 0xb0
+    nop