Squash commits for public release

kernel/include/platform/generic/cpu.h

@@ -0,0 +1,67 @@
+#ifndef _KERNEL_PLATFORM_GENERIC_CPU_H
+#define _KERNEL_PLATFORM_GENERIC_CPU_H
+
+#include <libkern/types.h>
+#include <mem/kmemzone.h>
+#include <mem/vmm.h>
+#include <platform/generic/fpu/fpu.h>
+#include <platform/generic/tasking/context.h>
+#include <tasking/bits/sched.h>
+
+#define MAX_CPU_CNT 4
+#define THIS_CPU (&cpus[system_cpu_id()])
+
+// TODO: Add support for RiscV FPU.
+#ifndef __riscv
+#define FPU_ENABLED
+#endif
+
+typedef uint32_t cpufeat_flags_t;
+
+struct thread;
+typedef int cpu_state_t;
+enum CPU_STATE {
+    CPU_IN_KERNEL,
+    CPU_IN_USERLAND,
+};
+
+typedef int data_access_type_t;
+enum DATA_ACCESS_TYPE {
+    DATA_ACCESS_REGULAR,
+    DATA_ACCESS_KERNEL, // Allows umem_copy on kernel addresses.
+};
+
+typedef struct {
+    int id;
+    int int_depth_counter;
+
+    vm_address_space_t* active_address_space;
+    kmemzone_t sched_stack_zone;
+    context_t* sched_context; // context of sched's registers
+    struct thread* running_thread;
+    cpu_state_t current_state;
+    data_access_type_t data_access_type;
+    struct thread* idle_thread;
+
+    sched_data_t sched;
+
+    /* Stat */
+    time_t stat_ticks_since_boot;
+    time_t stat_system_and_idle_ticks;
+    time_t stat_user_ticks;
+
+#ifdef FPU_ENABLED
+    // Information about current state of fpu.
+    struct thread* fpu_for_thread;
+    pid_t fpu_for_pid;
+#endif // FPU_ENABLED
+#ifdef KASAN_ENABLED
+    int kasan_depth_counter;
+#endif
+
+    cpufeat_flags_t cpufeat;
+} cpu_t;
+
+extern cpu_t cpus[MAX_CPU_CNT];
+
+#endif // _KERNEL_PLATFORM_GENERIC_CPU_H

kernel/include/platform/generic/cpuinfo.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/cpuinfo.h>
+#elif __arm__
+#include <platform/arm32/cpuinfo.h>
+#elif __aarch64__
+#include <platform/arm64/cpuinfo.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/cpuinfo.h>
+#endif

kernel/include/platform/generic/fpu/fpu.h

@@ -0,0 +1,7 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/fpu/fpu.h>
+#elif __arm__
+#include <platform/arm32/fpu/fpuv4.h>
+#elif __aarch64__
+#include <platform/arm64/fpu/fpu.h>
+#endif

kernel/include/platform/generic/init.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/init.h>
+#elif __arm__
+#include <platform/arm32/init.h>
+#elif __aarch64__
+#include <platform/arm64/init.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/init.h>
+#endif

kernel/include/platform/generic/pmm/settings.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/pmm/settings.h>
+#elif __arm__
+#include <platform/arm32/pmm/settings.h>
+#elif __aarch64__
+#include <platform/arm64/pmm/settings.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/pmm/settings.h>
+#endif

kernel/include/platform/generic/registers.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/registers.h>
+#elif __arm__
+#include <platform/arm32/registers.h>
+#elif __aarch64__
+#include <platform/arm64/registers.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/registers.h>
+#endif

kernel/include/platform/generic/syscalls/params.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/syscalls/params.h>
+#elif __arm__
+#include <platform/arm32/syscalls/params.h>
+#elif __aarch64__
+#include <platform/arm64/syscalls/params.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/syscalls/params.h>
+#endif

kernel/include/platform/generic/system.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/system.h>
+#elif __arm__
+#include <platform/arm32/system.h>
+#elif __aarch64__
+#include <platform/arm64/system.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/system.h>
+#endif

kernel/include/platform/generic/tasking/context.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/tasking/context.h>
+#elif __arm__
+#include <platform/arm32/tasking/context.h>
+#elif __aarch64__
+#include <platform/arm64/tasking/context.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/tasking/context.h>
+#endif

kernel/include/platform/generic/tasking/dump_impl.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/tasking/dump_impl.h>
+#elif __arm__
+#include <platform/arm32/tasking/dump_impl.h>
+#elif __aarch64__
+#include <platform/arm64/tasking/dump_impl.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/tasking/dump_impl.h>
+#endif

kernel/include/platform/generic/tasking/signal_impl.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/tasking/signal_impl.h>
+#elif __arm__
+#include <platform/arm32/tasking/signal_impl.h>
+#elif __aarch64__
+#include <platform/arm64/tasking/signal_impl.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/tasking/signal_impl.h>
+#endif

kernel/include/platform/generic/tasking/trapframe.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/tasking/trapframe.h>
+#elif __arm__
+#include <platform/arm32/tasking/trapframe.h>
+#elif __aarch64__
+#include <platform/arm64/tasking/trapframe.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/tasking/trapframe.h>
+#endif

kernel/include/platform/generic/vmm/consts.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/vmm/consts.h>
+#elif __arm__
+#include <platform/arm32/vmm/consts.h>
+#elif __aarch64__
+#include <platform/arm64/vmm/consts.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/vmm/consts.h>
+#endif

kernel/include/platform/generic/vmm/mapping_table.h

@@ -0,0 +1,17 @@
+#ifndef _KERNEL_PLATFORM_GENERIC_VMM_MAPPING_TABLE_H
+#define _KERNEL_PLATFORM_GENERIC_VMM_MAPPING_TABLE_H
+
+#include <libkern/types.h>
+
+struct mapping_entry {
+    uintptr_t paddr;
+    uintptr_t vaddr;
+    size_t pages;
+    uint32_t flags;
+    uint32_t last; // 1 if an element is the last.
+};
+typedef struct mapping_entry mapping_entry_t;
+
+extern mapping_entry_t extern_mapping_table[]; // Maps after kernel tables are ready, so can be outside kernelspace
+
+#endif // _KERNEL_PLATFORM_GENERIC_VMM_MAPPING_TABLE_H

kernel/include/platform/generic/vmm/mmu.h

@@ -0,0 +1,9 @@
+#if defined(__i386__) || defined(__x86_64__)
+#include <platform/x86/vmm/mmu.h>
+#elif __arm__
+#include <platform/arm32/vmm/mmu.h>
+#elif __aarch64__
+#include <platform/arm64/vmm/mmu.h>
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <platform/riscv64/vmm/mmu.h>
+#endif