Squash commits for public release

kernel/include/platform/arm64/tasking/context.h

@@ -0,0 +1,22 @@
+#ifndef _KERNEL_PLATFORM_ARM64_TASKING_CONTEXT_H
+#define _KERNEL_PLATFORM_ARM64_TASKING_CONTEXT_H
+
+#include <libkern/c_attrs.h>
+#include <libkern/types.h>
+
+typedef struct {
+    uint64_t x[22];
+    uint64_t lr;
+} PACKED context_t;
+
+static inline uintptr_t context_get_instruction_pointer(context_t* ctx)
+{
+    return ctx->lr;
+}
+
+static inline void context_set_instruction_pointer(context_t* ctx, uintptr_t ip)
+{
+    ctx->lr = ip;
+}
+
+#endif // _KERNEL_PLATFORM_ARM64_TASKING_CONTEXT_H

kernel/include/platform/arm64/tasking/dump_impl.h

@@ -0,0 +1,12 @@
+#ifndef _KERNEL_PLATFORM_ARM64_TASKING_DUMP_IMPL_H
+#define _KERNEL_PLATFORM_ARM64_TASKING_DUMP_IMPL_H
+
+#include <libkern/types.h>
+#include <tasking/bits/dump.h>
+#include <tasking/tasking.h>
+
+int dump_impl(dump_data_t* data);
+int dump_kernel_impl(dump_data_t* dump_data, const char* err_desc);
+int dump_kernel_impl_from_tf(dump_data_t* dump_data, const char* err_desc, trapframe_t* tf);
+
+#endif // _KERNEL_PLATFORM_ARM64_TASKING_DUMP_IMPL_H

kernel/include/platform/arm64/tasking/signal_impl.h

@@ -0,0 +1,10 @@
+#ifndef _KERNEL_PLATFORM_ARM64_TASKING_SIGNAL_IMPL_H
+#define _KERNEL_PLATFORM_ARM64_TASKING_SIGNAL_IMPL_H
+
+#include <libkern/types.h>
+struct thread;
+
+int signal_impl_prepare_stack(struct thread* thread, int signo, uintptr_t old_sp, uintptr_t magic);
+int signal_impl_restore_stack(struct thread* thread, uintptr_t* old_sp, uintptr_t* magic);
+
+#endif // _KERNEL_PLATFORM_ARM64_TASKING_SIGNAL_IMPL_H

kernel/include/platform/arm64/tasking/trapframe.h

@@ -0,0 +1,103 @@
+#ifndef _KERNEL_PLATFORM_ARM64_TASKING_TRAPFRAME_H
+#define _KERNEL_PLATFORM_ARM64_TASKING_TRAPFRAME_H
+
+#include <libkern/c_attrs.h>
+#include <libkern/log.h>
+#include <libkern/types.h>
+
+typedef struct {
+    uint64_t x[31];
+    uint64_t esr;
+    uint64_t elr;
+    uint64_t far;
+    uint64_t spsr;
+    uint64_t sp;
+} PACKED trapframe_t;
+
+static inline uintptr_t get_stack_pointer(trapframe_t* tf)
+{
+    return tf->sp;
+}
+
+static inline void set_stack_pointer(trapframe_t* tf, uintptr_t sp)
+{
+    tf->sp = sp;
+}
+
+static inline uintptr_t get_frame_pointer(trapframe_t* tf)
+{
+    return tf->x[29];
+}
+
+static inline void set_frame_pointer(trapframe_t* tf, uintptr_t bp)
+{
+    tf->x[29] = bp;
+}
+
+static inline uintptr_t get_instruction_pointer(trapframe_t* tf)
+{
+    return tf->elr;
+}
+
+static inline void set_instruction_pointer(trapframe_t* tf, uintptr_t ip)
+{
+    tf->elr = ip;
+}
+
+static inline uintptr_t get_syscall_result(trapframe_t* tf)
+{
+    return tf->x[0];
+}
+
+static inline void set_syscall_result(trapframe_t* tf, uintptr_t val)
+{
+    tf->x[0] = val;
+}
+
+/**
+ * STACK FUNCTIONS
+ */
+
+static inline void tf_push_to_stack(trapframe_t* tf, uintptr_t val)
+{
+    tf->sp -= sizeof(uintptr_t);
+    *((uintptr_t*)tf->sp) = val;
+}
+
+static inline uintptr_t tf_pop_to_stack(trapframe_t* tf)
+{
+    uintptr_t val = *((uintptr_t*)tf->sp);
+    tf->sp += sizeof(uintptr_t);
+    return val;
+}
+
+static inline void tf_move_stack_pointer(trapframe_t* tf, int32_t val)
+{
+    tf->sp += val;
+}
+
+static inline void tf_setup_as_user_thread(trapframe_t* tf)
+{
+    tf->spsr = 0x0;
+}
+
+static inline void tf_setup_as_kernel_thread(trapframe_t* tf)
+{
+    tf->spsr = 0x4;
+}
+
+static void dump_tf(trapframe_t* tf)
+{
+    for (int i = 0; i < 31; i++) {
+        log("x[%d]: %zx", i, tf->x[i]);
+    }
+
+    log("tf: %p", tf);
+    log("sp: %zx", tf->sp);
+    log("ip: %zx", tf->elr);
+    log("fl: %zx", tf->spsr);
+    log("far: %zx", tf->far);
+    log("esr: %zx", tf->esr);
+}
+
+#endif // _KERNEL_PLATFORM_ARM64_TASKING_TRAPFRAME_H