7 files changed, 166 insertions, 6 deletions
diff --git a/sys/inc/arch/amd64/cpu.h b/sys/inc/arch/amd64/cpu.h
new file mode 100644
index 0000000..67af48b
--- /dev/null
+++ b/sys/inc/arch/amd64/cpu.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _MACHINE_CPU_H_
+#define _MACHINE_CPU_H_ 1
+
+void cpu_loinit(void);
+
+#endif  /* !_MACHINE_CPU_H_ */
diff --git a/sys/inc/arch/amd64/frame.h b/sys/inc/arch/amd64/frame.h
new file mode 100644
index 0000000..821a414
--- /dev/null
+++ b/sys/inc/arch/amd64/frame.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _MACHINE_FRAME_H_
+#define _MACHINE_FRAME_H_ 1
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+
+/*
+ * Processor state
+ */
+struct __packed trapframe {
+    uint64_t vector;
+    uint64_t r15;
+    uint64_t r14;
+    uint64_t r13;
+    uint64_t r12;
+    uint64_t r11;
+    uint64_t r10;
+    uint64_t r9;
+    uint64_t r8;
+    uint64_t rbp;
+    uint64_t rdi;
+    uint64_t rsi;
+    uint64_t rbx;
+    uint64_t rdx;
+    uint64_t rcx;
+    uint64_t rax;
+    uint64_t error_code;
+    uint64_t rip;
+    uint64_t cs;
+    uint64_t rflags;
+    uint64_t rsp;
+    uint64_t ss;
+};
+
+#endif  /* !_MACHINE_FRAME_H_ */
diff --git a/sys/inc/arch/amd64/idt.h b/sys/inc/arch/amd64/idt.h
index 69ca30a..1099310 100644
--- a/sys/inc/arch/amd64/idt.h
+++ b/sys/inc/arch/amd64/idt.h
@@ -30,11 +30,18 @@
 #ifndef _MACHINE_IDT_H_
 #define _MACHINE_IDT_H_ 1
 
+#define INT_GATE 0x8E
+#define TRAP_GATE 0x8F
+
+#if !defined(__ASSEMBLER__)
 #include <sys/types.h>
+#endif  /* __ASSEMBLER__ */
 
+#if !defined(__ASSEMBLER__)
 /*
  * Set an interrupt gate
  */
 void idt_set_gate(uint8_t vector, uint8_t type, uintptr_t isr, uint8_t ist);
+#endif  /* !__ASSEMBLER__ */
 
 #endif  /* !_MACHINE_IDT_H_ */
diff --git a/sys/inc/arch/amd64/lapic.h b/sys/inc/arch/amd64/lapic.h
index 35ba778..d22a560 100644
--- a/sys/inc/arch/amd64/lapic.h
+++ b/sys/inc/arch/amd64/lapic.h
@@ -31,6 +31,7 @@
 #define _MACHINE_LAPIC_H_ 1
 
 #include <sys/types.h>
+#include <lib/stdbool.h>
 #include <mu/cpu.h>
 
 #define LAPIC_TMR_VEC 0x81
@@ -91,6 +92,12 @@ struct lapic_ipi {
 };
 
 /*
+ * Put the local APIC timer in one shot mode and fire it
+ * off
+ */
+void lapic_oneshot_usec(struct mcb *mcb, size_t usec);
+
+/*
  * Read the current local APIC id
  */
 uint32_t lapic_read_id(struct mcb *mcb);
diff --git a/sys/inc/arch/amd64/mcb.h b/sys/inc/arch/amd64/mcb.h
index ccd71ce..d48526f 100644
--- a/sys/inc/arch/amd64/mcb.h
+++ b/sys/inc/arch/amd64/mcb.h
@@ -16,15 +16,15 @@
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPKERNE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LKERNS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * PKERNSIBILITY OF SUCH DAMAGE.
+ * POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef _MACHINE_MCB_H_
diff --git a/sys/inc/arch/amd64/msr.h b/sys/inc/arch/amd64/msr.h
index f962d21..74566ce 100644
--- a/sys/inc/arch/amd64/msr.h
+++ b/sys/inc/arch/amd64/msr.h
@@ -16,15 +16,15 @@
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPKERNE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LKERNS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * PKERNSIBILITY OF SUCH DAMAGE.
+ * POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef _MACHINE_MSR_H_
diff --git a/sys/inc/arch/amd64/pcb.h b/sys/inc/arch/amd64/pcb.h
new file mode 100644
index 0000000..7b3e3d3
--- /dev/null
+++ b/sys/inc/arch/amd64/pcb.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _MACHINE_PCB_H_
+#define _MACHINE_PCB_H_ 1
+
+#include <md/frame.h>
+#include <md/vas.h>
+
+/*
+ * Represents the process control block
+ *
+ * @vas: Virtual address space in-use
+ * @tf: Trapframe snapshot
+ */
+struct pcb {
+    struct mmu_vas vas;
+    struct trapframe tf;
+};
+
+#endif  /* !_MACHINE_PCB_H_ */