| 52,13 → 52,13 |
|---|
| |
| /* Setup syscall entry address */ |
| |
| /* This is _mess_ - the 64-bit CS is argument+16, |
| * the SS is argument+8. The order is: |
| /* This is _mess_ - the 64-bit CS is argument + 16, |
| * the SS is argument + 8. The order is: |
| * +0(KDATA_DES), +8(UDATA_DES), +16(UTEXT_DES) |
| */ |
| write_msr(AMD_MSR_STAR, |
| ((uint64_t)(gdtselector(KDATA_DES) | PL_USER)<<48) \ |
| | ((uint64_t)(gdtselector(KTEXT_DES) | PL_KERNEL)<<32)); |
| ((uint64_t)(gdtselector(KDATA_DES) | PL_USER) << 48) | |
| ((uint64_t)(gdtselector(KTEXT_DES) | PL_KERNEL) << 32)); |
| write_msr(AMD_MSR_LSTAR, (uint64_t)syscall_entry); |
| /* Mask RFLAGS on syscall |
| * - disable interrupts, until we exchange the stack register |