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boreddevnl
2026-03-03 20:34:50 +01:00
parent 8b3ca448ed
commit 3c7d36a50f
42 changed files with 5841 additions and 78 deletions
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17
src/kernel/platform.c
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@@ -23,6 +23,23 @@ void platform_init(void) {
kernel_phys_base = kernel_addr_request.response->physical_base;
kernel_virt_base = kernel_addr_request.response->virtual_base;
}
// Enable FPU and SSE
uint64_t cr0;
asm volatile("mov %%cr0, %0" : "=r"(cr0));
cr0 &= ~(1ULL << 2); // Clear EM (Emulation)
cr0 |= (1ULL << 1); // Set MP (Monitor Coprocessor)
cr0 |= (1ULL << 5); // Set NE (Numeric Error)
asm volatile("mov %0, %%cr0" : : "r"(cr0));
uint64_t cr4;
asm volatile("mov %%cr4, %0" : "=r"(cr4));
cr4 |= (1ULL << 9); // Set OSFXSR (FXSAVE/FXRSTOR support)
cr4 |= (1ULL << 10); // Set OSXMMEXCPT (SIMD exception support)
asm volatile("mov %0, %%cr4" : : "r"(cr4));
// Initialize FPU
asm volatile("fninit");
}
uint64_t p2v(uint64_t phys) { return phys + hhdm_offset; }
uint64_t v2p(uint64_t virt) {