92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
/*
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* Graphics.hpp
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* SYS_FBINFO, SYS_FBMAP, SYS_TERMSIZE, SYS_TERMSCALE syscalls
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* Copyright (c) 2026 Daniel Hammer
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*/
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#pragma once
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#include <cstdint>
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#include <Sched/Scheduler.hpp>
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#include <Memory/Paging.hpp>
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#include <Memory/HHDM.hpp>
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#include <Graphics/Framebuffer.hpp>
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#include <Terminal/Terminal.hpp>
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#include "Syscall.hpp"
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#include "Common.hpp"
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#include "../Libraries/flanterm/src/flanterm.h"
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namespace montauk::abi {
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static void Sys_FbInfo(FbInfo* out) {
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if (out == nullptr) return;
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out->width = Graphics::Framebuffer::GetWidth();
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out->height = Graphics::Framebuffer::GetHeight();
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out->pitch = Graphics::Framebuffer::GetPitch();
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out->bpp = 32;
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out->userAddr = 0;
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}
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static uint64_t Sys_FbMap() {
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auto* proc = Sched::GetCurrentProcessPtr();
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if (proc == nullptr) return 0;
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uint32_t* fbBase = Graphics::Framebuffer::GetBase();
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if (fbBase == nullptr) return 0;
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uint64_t fbPhys = Memory::SubHHDM((uint64_t)fbBase);
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uint64_t fbSize = Graphics::Framebuffer::GetHeight()
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* Graphics::Framebuffer::GetPitch();
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uint64_t numPages = (fbSize + 0xFFF) / 0x1000;
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Kt::KernelLogStream(Kt::INFO, "FbMap") << "fbPhys=" << kcp::hex << fbPhys
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<< " size=" << kcp::dec << fbSize
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<< " pages=" << numPages
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<< " (" << Graphics::Framebuffer::GetWidth()
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<< "x" << Graphics::Framebuffer::GetHeight()
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<< " pitch=" << Graphics::Framebuffer::GetPitch() << ")";
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// Map at a fixed user VA
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constexpr uint64_t userVa = 0x50000000ULL;
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for (uint64_t i = 0; i < numPages; i++) {
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if (!Memory::VMM::Paging::MapUserInWC(
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proc->pml4Phys,
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fbPhys + i * 0x1000,
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userVa + i * 0x1000
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)) {
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return 0;
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}
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}
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return userVa;
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}
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static uint64_t Sys_TermSize() {
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// If the process is redirected to a GUI terminal, return those dimensions
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auto* proc = Sched::GetCurrentProcessPtr();
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if (proc && proc->redirected) {
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if (proc->termCols > 0 && proc->termRows > 0) {
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return ((uint64_t)proc->termRows << 32) | ((uint64_t)proc->termCols & 0xFFFFFFFF);
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}
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auto* target = GetRedirTarget(proc);
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if (target && target->termCols > 0 && target->termRows > 0) {
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return ((uint64_t)target->termRows << 32) | ((uint64_t)target->termCols & 0xFFFFFFFF);
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}
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}
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size_t cols = 0, rows = 0;
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flanterm_get_dimensions(Kt::ctx, &cols, &rows);
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return (rows << 32) | (cols & 0xFFFFFFFF);
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}
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static int64_t Sys_TermScale(uint64_t scale_x, uint64_t scale_y) {
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if (scale_x == 0) {
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return (int64_t)((Kt::GetFontScaleY() << 32) | (Kt::GetFontScaleX() & 0xFFFFFFFF));
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}
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Kt::Rescale((size_t)scale_x, (size_t)scale_y);
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size_t cols = 0, rows = 0;
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flanterm_get_dimensions(Kt::ctx, &cols, &rows);
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return (int64_t)((rows << 32) | (cols & 0xFFFFFFFF));
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}
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};
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