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Implement loading of linked ELF executables.

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This took me a couple hours. :^)

The ELF loading code now allocates a single region for the entire
file and creates virtual memory mappings for the sections as needed.

Very nice!
This commit is contained in:
Andreas Kling 2018-10-27 14:56:52 +02:00
parent 99ee6acd69
commit 9a71c7759a
16 changed files with 258 additions and 57 deletions
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14
Kernel/i386.cpp
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@ -218,10 +218,22 @@ void exception_14_handler()
kprintf("eax=%x ebx=%x ecx=%x edx=%x\n", regs.eax, regs.ebx, regs.ecx, regs.edx);
kprintf("ebp=%x esp=%x esi=%x edi=%x\n", regs.ebp, esp, regs.esi, regs.edi);
byte* codeptr = (byte*)regs.eip;
kprintf("code: %b %b %b %b %b %b %b %b\n",
codeptr[0],
codeptr[1],
codeptr[2],
codeptr[3],
codeptr[4],
codeptr[5],
codeptr[6],
codeptr[7]
);
if (current->isRing0())
HANG;
auto response = MemoryManager::the().handlePageFault(PageFault(exception_code, LinearAddress(faultAddress)));
auto response = MM.handlePageFault(PageFault(exception_code, LinearAddress(faultAddress)));
if (response == PageFaultResponse::ShouldCrash) {
kprintf("Crashing after unresolved page fault\n");