From edf9e71e2a7b6b89775c29cf28c19c6b89992c25 Mon Sep 17 00:00:00 2001 From: aqua Date: Mon, 28 Mar 2022 20:03:38 +0300 Subject: Initial commit x86 kernel that prints a hello world message to com1 --- arch/i686/test/gdt.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 arch/i686/test/gdt.c (limited to 'arch/i686/test/gdt.c') diff --git a/arch/i686/test/gdt.c b/arch/i686/test/gdt.c new file mode 100644 index 0000000..2947b42 --- /dev/null +++ b/arch/i686/test/gdt.c @@ -0,0 +1,20 @@ +#include "gdt.h" +#include +#include + +int +main() +{ + assert(*(uint8_t *)&null_access == 0x00); + assert(*(uint8_t *)&ktext_access == 0x9a); + assert(*(uint8_t *)&kdata_access == 0x92); + + struct SegmentDescriptor_t d; + SegmentDescriptor(&d, 0, 0, 0); + assert(*(uint64_t *)&d == 0); + + assert(ktextDescriptor == 0x10); + assert(kdataDescriptor == 0x18); + + return EXIT_SUCCESS; +} -- cgit v1.2.1