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increasing the readability

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This commit is contained in:
Stefan Lankes 2017-08-03 00:43:01 +02:00
parent cd6ebf5d8f
commit 3cc3cb0a29
1 changed files with 4 additions and 4 deletions
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8
arch/x86/kernel/gdt.c
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@ -41,7 +41,7 @@ gdt_ptr_t gp;
// currently, our kernel has full access to the ioports
static gdt_entry_t gdt[GDT_ENTRIES] = {[0 ... GDT_ENTRIES-1] = {0, 0, 0, 0, 0, 0}};
static tss_t task_state_segments[MAX_CORES] __attribute__ ((aligned (PAGE_SIZE)));
static uint8_t stack_table[MAX_CORES*KERNEL_STACK_SIZE*MAX_IST] __attribute__ ((aligned (PAGE_SIZE)));
static uint8_t stack_table[MAX_CORES][KERNEL_STACK_SIZE*MAX_IST] __attribute__ ((aligned (PAGE_SIZE)));
extern const void boot_stack;
@ -149,9 +149,9 @@ void gdt_install(void)
for(i=0; i<MAX_CORES; i++) {
task_state_segments[i].rsp0 = (size_t)&boot_stack + (i+1) * KERNEL_STACK_SIZE - 0x10;
task_state_segments[i].ist1 = 0; // ist will created per task
task_state_segments[i].ist2 = (size_t)stack_table + MAX_IST*i * KERNEL_STACK_SIZE + (2 /*IST number */ - 1) * KERNEL_STACK_SIZE - 0x10;
task_state_segments[i].ist3 = (size_t)stack_table + MAX_IST*i * KERNEL_STACK_SIZE + (3 /*IST number */ - 1) * KERNEL_STACK_SIZE - 0x10;
task_state_segments[i].ist4 = (size_t)stack_table + MAX_IST*i * KERNEL_STACK_SIZE + (4 /*IST number */ - 1) * KERNEL_STACK_SIZE - 0x10;
task_state_segments[i].ist2 = (size_t) stack_table[i] + (2 /*IST number */ - 1) * KERNEL_STACK_SIZE - 0x10;
task_state_segments[i].ist3 = (size_t) stack_table[i] + (3 /*IST number */ - 1) * KERNEL_STACK_SIZE - 0x10;
task_state_segments[i].ist4 = (size_t) stack_table[i] + (4 /*IST number */ - 1) * KERNEL_STACK_SIZE - 0x10;
gdt_set_gate(num+i*2, (unsigned long) (task_state_segments+i), sizeof(tss_t)-1,
GDT_FLAG_PRESENT | GDT_FLAG_TSS | GDT_FLAG_RING0, 0);