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Start working on memory-mapped files.

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First of all, change sys$mmap to take a struct SC_mmap_params since our
sycsall calling convention can't handle more than 3 arguments.

This exposed a bug in Syscall::invoke() needing to use clobber lists.
It was a bit confusing to debug. :^)
This commit is contained in:
Andreas Kling 2018-11-08 11:37:01 +01:00
parent 41a751c90c
commit fdbd9f1e27
14 changed files with 82 additions and 26 deletions
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5
Kernel/i386.cpp
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@ -232,6 +232,11 @@ void exception_14_handler(RegisterDumpWithExceptionCode& regs)
if (response == PageFaultResponse::ShouldCrash) {
kprintf("Crashing after unresolved page fault\n");
kprintf("exception code: %w\n", regs.exception_code);
kprintf("pc=%w:%x ds=%w es=%w fs=%w gs=%w\n", regs.cs, regs.eip, regs.ds, regs.es, regs.fs, regs.gs);
kprintf("stk=%w:%x\n", ss, esp);
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);
current->crash();
} else if (response == PageFaultResponse::Continue) {
#ifdef PAGE_FAULT_DEBUG