implement proper IRQL, DPCs, kernel and user APCs, alertable waits, async file I/O with cancellation, trap frames, selftests, a real driver/device model, native async FAT32, VFAT dotfile fixes, syscall ABI cleanup, async_apc and async_cancel tests, POSIX multi-volume paths, and pimp the readme.
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@@ -1,132 +1,126 @@
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#pragma once
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// hal_api.h - HAL interface table exported as HalGetApi()
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#include <stdint.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <ke_status.h>
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typedef struct BOOT_INFO BOOT_INFO;
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typedef struct HAL_SCREEN {
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void (*Clear)(uint32_t color);
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void (*PutPixel)(int x, int y, uint32_t color);
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void (*Blit)(int x, int y, int w, int h, const uint32_t* pixels);
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void (*GetSize)(int* width, int* height);
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void (*Scroll)(int lines);
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void (*PutChar)(char c, int x, int y, uint32_t fg, uint32_t bg);
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void (*PrintChar)(char c, uint32_t fg, uint32_t bg);
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// Hardware mouse cursor: save/restore background and blit sprite
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void (*DrawCursor)(int x, int y);
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void (*EraseCursor)(void);
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} HAL_SCREEN;
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typedef struct HAL_KEYBOARD {
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uint8_t (*Poll)(void);
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uint8_t (*ReadScancode)(void);
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char (*ReadChar)(void);
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uint32_t (*GetModifiers)(void);
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void (*SetCallback)(void (*cb)(uint8_t scancode));
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bool (*IsKeyDown)(uint8_t scancode, bool extended);
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void (*Isr)(void);
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uint8_t IrqNumber;
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} HAL_KEYBOARD;
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// HAL_MOUSE – PS/2 auxiliary mouse on IRQ 12.
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// Packet format: standard 3-byte PS/2 (buttons, deltaX, deltaY).
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// Y is already screen-oriented (positive = down) after ISR inversion.
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typedef struct HAL_MOUSE {
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// Non-blocking: returns true if a packet is waiting in the ring buffer.
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bool (*Poll)(void);
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// Non-blocking dequeue. Returns false when buffer is empty.
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// buttons: bit0=left, bit1=right, bit2=middle
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bool (*Read)(int* dx, int* dy, uint8_t* buttons);
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// Callback invoked from ISR context after every completed packet.
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void (*SetCallback)(void (*cb)(int dx, int dy, uint8_t buttons));
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// Absolute cursor position, clamped to screen bounds.
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void (*GetPosition)(int* x, int* y);
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void (*SetPosition)(int x, int y);
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// Update the clamping rectangle (call after mode change / resize).
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void (*SetBounds)(int w, int h);
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// Raw ISR – called by KeIrqDispatch for IRQ 12.
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void (*Isr)(void);
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uint8_t IrqNumber; // always 12
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} HAL_MOUSE;
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typedef struct HAL_DISK {
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KSTATUS (*ReadSectors)(uint8_t drive, uint64_t lba,
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uint32_t count, void* buf);
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KSTATUS (*WriteSectors)(uint8_t drive, uint64_t lba,
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uint32_t count, const void* buf);
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bool (*DrivePresent)(uint8_t drive);
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uint64_t (*DriveSectorCount)(uint8_t drive);
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} HAL_DISK;
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typedef struct HAL_TIMER {
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uint64_t (*QueryTicks)(void);
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void (*Stall)(uint32_t us);
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void (*Isr)(void);
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uint8_t IrqNumber;
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} HAL_TIMER;
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typedef struct HAL_PCI {
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uint32_t (*Read32)(uint8_t bus, uint8_t dev,
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uint8_t fn, uint8_t reg);
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void (*Write32)(uint8_t bus, uint8_t dev,
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uint8_t fn, uint8_t reg, uint32_t val);
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bool (*FindDevice)(uint16_t vendor, uint16_t device,
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uint8_t* bus, uint8_t* dev, uint8_t* fn);
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bool (*FindClass)(uint8_t classCode, uint8_t subclass,
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uint8_t* bus, uint8_t* dev, uint8_t* fn);
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// Returns the IRQ line from PCI config space (register 0x3C, byte 0).
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// Returns 0xFF if no interrupt is wired.
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uint8_t (*GetIrqLine)(uint8_t bus, uint8_t dev, uint8_t fn);
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} HAL_PCI;
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typedef struct HAL_INTC {
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void (*RouteIrq)(uint8_t irq);
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void (*MaskIrq)(uint8_t irq);
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void (*UnmaskIrq)(uint8_t irq);
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void (*SendEoi)(void);
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} HAL_INTC;
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typedef struct HAL_POWER {
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// ACPI S5 soft-off. Disables interrupts, writes SLP_EN to PM1a/b_CNT,
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// and halts if firmware doesn't respond. Does not return.
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void (*Shutdown)(void);
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} HAL_POWER;
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typedef struct HAL_API {
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uint32_t Version;
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void *(*PhysToVirt)(uint64_t physAddr);
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HAL_SCREEN Screen;
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HAL_KEYBOARD Keyboard;
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HAL_MOUSE Mouse;
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HAL_DISK Disk;
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HAL_TIMER Timer;
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HAL_PCI Pci;
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HAL_INTC Intc;
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HAL_POWER Power;
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} HAL_API;
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typedef struct HAL_INIT_PARAMS {
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// Framebuffer
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uintptr_t FramebufferBase;
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uint32_t FramebufferWidth;
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uint32_t FramebufferHeight;
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uint32_t FramebufferStride;
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// ACPI
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uintptr_t RsdpPhysical;
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// Memory
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uint64_t PhysicalWindowBase;
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// Debug
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int DebugEnabled;
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} HAL_INIT_PARAMS;
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#define HAL_API_VERSION 1
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__declspec(dllexport) const HAL_API* HalGetApi(void);
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__declspec(dllexport) void HalRegisterScheduler(void (*pKeSchedulerTick)(void));
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__declspec(dllexport) KSTATUS HalInitialize(const HAL_INIT_PARAMS* params);
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#pragma once
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// hal_api.h - HAL interface table exported as HalGetApi()
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#include <stdint.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <ke_status.h>
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typedef struct BOOT_INFO BOOT_INFO;
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typedef struct HAL_SCREEN {
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void (*Clear)(uint32_t color);
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void (*PutPixel)(int x, int y, uint32_t color);
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void (*Blit)(int x, int y, int w, int h, const uint32_t* pixels);
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void (*GetSize)(int* width, int* height);
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void (*Scroll)(int lines);
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void (*PutChar)(char c, int x, int y, uint32_t fg, uint32_t bg);
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void (*PrintChar)(char c, uint32_t fg, uint32_t bg);
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// Hardware mouse cursor: save/restore background and blit sprite
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void (*DrawCursor)(int x, int y);
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void (*EraseCursor)(void);
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} HAL_SCREEN;
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typedef struct HAL_KEYBOARD {
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uint8_t (*Poll)(void);
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uint8_t (*ReadScancode)(void);
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char (*ReadChar)(void);
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uint32_t (*GetModifiers)(void);
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void (*SetCallback)(void (*cb)(uint8_t scancode));
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bool (*IsKeyDown)(uint8_t scancode, bool extended);
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void (*Isr)(void);
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// Optional bottom half, queued by the kernel after IRQ dispatch.
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void (*Dpc)(void);
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uint8_t IrqNumber;
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} HAL_KEYBOARD;
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// HAL_MOUSE – PS/2 auxiliary mouse on IRQ 12.
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// Packet format: standard 3-byte PS/2 (buttons, deltaX, deltaY).
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// Y is already screen-oriented (positive = down) after ISR inversion.
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typedef struct HAL_MOUSE {
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// Non-blocking: returns true if a packet is waiting in the ring buffer.
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bool (*Poll)(void);
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// Non-blocking dequeue. Returns false when buffer is empty.
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// buttons: bit0=left, bit1=right, bit2=middle
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bool (*Read)(int* dx, int* dy, uint8_t* buttons);
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// Callback invoked from DPC context after every completed packet.
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void (*SetCallback)(void (*cb)(int dx, int dy, uint8_t buttons));
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// Absolute cursor position, clamped to screen bounds.
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void (*GetPosition)(int* x, int* y);
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void (*SetPosition)(int x, int y);
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// Update the clamping rectangle (call after mode change / resize).
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void (*SetBounds)(int w, int h);
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// Raw ISR – called by KeIrqDispatch for IRQ 12.
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void (*Isr)(void);
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// Optional bottom half, queued by the kernel after IRQ dispatch.
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void (*Dpc)(void);
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uint8_t IrqNumber; // always 12
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} HAL_MOUSE;
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typedef struct HAL_TIMER {
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uint64_t (*QueryTicks)(void);
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void (*Stall)(uint32_t us);
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void (*Isr)(void);
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uint8_t IrqNumber;
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} HAL_TIMER;
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typedef struct HAL_PCI {
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uint32_t (*Read32)(uint8_t bus, uint8_t dev,
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uint8_t fn, uint8_t reg);
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void (*Write32)(uint8_t bus, uint8_t dev,
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uint8_t fn, uint8_t reg, uint32_t val);
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bool (*FindDevice)(uint16_t vendor, uint16_t device,
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uint8_t* bus, uint8_t* dev, uint8_t* fn);
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bool (*FindClass)(uint8_t classCode, uint8_t subclass,
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uint8_t* bus, uint8_t* dev, uint8_t* fn);
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// Returns the IRQ line from PCI config space (register 0x3C, byte 0).
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// Returns 0xFF if no interrupt is wired.
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uint8_t (*GetIrqLine)(uint8_t bus, uint8_t dev, uint8_t fn);
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} HAL_PCI;
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typedef struct HAL_INTC {
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void (*RouteIrq)(uint8_t irq);
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void (*MaskIrq)(uint8_t irq);
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void (*UnmaskIrq)(uint8_t irq);
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void (*SendEoi)(void);
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} HAL_INTC;
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typedef struct HAL_POWER {
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// ACPI S5 soft-off. Disables interrupts, writes SLP_EN to PM1a/b_CNT,
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// and halts if firmware doesn't respond. Does not return.
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void (*Shutdown)(void);
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} HAL_POWER;
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typedef struct HAL_API {
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uint32_t Version;
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void *(*PhysToVirt)(uint64_t physAddr);
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HAL_SCREEN Screen;
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HAL_KEYBOARD Keyboard;
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HAL_MOUSE Mouse;
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HAL_TIMER Timer;
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HAL_PCI Pci;
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HAL_INTC Intc;
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HAL_POWER Power;
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} HAL_API;
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typedef struct HAL_INIT_PARAMS {
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// Framebuffer
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uintptr_t FramebufferBase;
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uint32_t FramebufferWidth;
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uint32_t FramebufferHeight;
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uint32_t FramebufferStride;
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// ACPI
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uintptr_t RsdpPhysical;
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// Memory
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uint64_t PhysicalWindowBase;
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// Debug
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int Debug;
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} HAL_INIT_PARAMS;
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#define HAL_API_VERSION 2
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__declspec(dllexport) const HAL_API* HalGetApi(void);
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__declspec(dllexport) void HalRegisterScheduler(void (*pKeSchedulerTick)(void));
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__declspec(dllexport) KSTATUS HalInitialize(const HAL_INIT_PARAMS* params);
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