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Move boot_page_directory while increment

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Sam Tebbs 2019-04-23 18:51:44 +01:00 committed by SamTebbs33
parent 80b88c7d03
commit 24249a5f40
1 changed files with 12 additions and 11 deletions
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23
src/kernel/kmain.zig
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@ -41,28 +41,29 @@ export var boot_page_directory: [1024]u32 align(4096) linksection(".rodata.boot"
var i = 0;
var idx = 1;
// Fill preceding pages with zeroes. May not be unecessary but incurs no runtime cost
while (i < KERNEL_PAGE_NUMBER - 1) {
dir[idx] = 0;
// Fill preceding pages with zeroes. May be unecessary but incurs no runtime cost
while (i < KERNEL_PAGE_NUMBER - 1) : ({
i += 1;
idx += 1;
}) {
dir[idx] = 0;
}
// Map the kernel's higher half pages increasing by 4 MiB every time
i = 0;
while (i < KERNEL_NUM_PAGES) {
while (i < KERNEL_NUM_PAGES) : ({
i += 1;
idx += 1;
}) {
dir[idx] = 0x00000083 | (i << 22);
i += 1;
idx += 1;
}
// Increase max number of branches done by comptime evaluator
@setEvalBranchQuota(1024);
// Fill suceeding pages with zeroes. May not be unecessary but incurs no runtime cost
// Fill suceeding pages with zeroes. May be unecessary but incurs no runtime cost
i = 0;
while (i < 1024 - KERNEL_PAGE_NUMBER - KERNEL_NUM_PAGES) {
dir[idx] = 0;
while (i < 1024 - KERNEL_PAGE_NUMBER - KERNEL_NUM_PAGES) : ({
i += 1;
idx += 1;
}) {
dir[idx] = 0;
}
break :init dir;
};