diff options
| author | Danny Holman <dholman@gymli.xyz> | 2021-08-27 08:21:54 -0500 |
|---|---|---|
| committer | Danny Holman <dholman@gymli.xyz> | 2021-08-27 08:21:54 -0500 |
| commit | 581d19fceeaadaeb2249ae485505e2b4c5340328 (patch) | |
| tree | 6de540c2212b0845417877bd8c73c33430db5125 | |
| parent | 9f09b01573a737c9a3274177a60cf51f1015f792 (diff) | |
arch: i386: add ring-3 descriptors to the GDT
Add two ring-3 segment discriptors to the GDT during gdt_install.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
| -rw-r--r-- | arch/i386/boot/gdt.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/i386/boot/gdt.c b/arch/i386/boot/gdt.c index 53853bb..8be5563 100644 --- a/arch/i386/boot/gdt.c +++ b/arch/i386/boot/gdt.c @@ -46,7 +46,7 @@ struct gpt_ptr { uint32_t base; }__attribute__((packed)); -uint64_t desc[3]; +uint64_t desc[5]; struct gpt_ptr gp; extern void flush_gdt(struct gpt_ptr *ptr); @@ -74,5 +74,7 @@ void gdt_install(void) { desc[0] = create_gdt_entry(0, 0, 0); desc[1] = create_gdt_entry(0, 0x000FFFFF, GDT_CODE_PL0); desc[2] = create_gdt_entry(0, 0x000FFFFF, GDT_DATA_PL0); + desc[3] = create_gdt_entry(0, 0x000FFFFF, GDT_DATA_PL3); + desc[4] = create_gdt_entry(0, 0x000FFFFF, GDT_DATA_PL3); flush_gdt(&gp); } |