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fix sse

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This commit is contained in:
Stepan Usatiuk
2023-10-22 10:44:14 +02:00
parent b94a46cd20
commit a1a0df3f00
5 changed files with 16 additions and 26 deletions
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10
src/arch/x86/task.cpp
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@@ -16,6 +16,8 @@
#include "timer.hpp"
#include "tty.hpp"
char temp_fxsave[512] __attribute__((aligned(16)));
void sanity_check_frame(struct task_frame *cur_frame) {
assert2((void *) cur_frame->ip != NULL, "Sanity check");
assert2((void *) cur_frame->sp != NULL, "Sanity check");
@@ -60,6 +62,7 @@ static std::atomic<bool> initialized = false;
static void free_task(struct Task *t) {
kfree(t->stack);
kfree(t->name);
kfree(t->fxsave);
kfree(t);
}
@@ -175,13 +178,16 @@ struct Task *new_ktask(void (*fn)(), const char *name) {
struct Task *newt = static_cast<Task *>(kmalloc(sizeof(struct Task)));
newt->stack = static_cast<uint64_t *>(kmalloc(TASK_SS));
newt->name = static_cast<char *>(kmalloc(strlen(name) + 1));
newt->fxsave = static_cast<char *>(kmalloc(512));
strcpy(name, newt->name);
newt->frame.sp = ((((uintptr_t) newt->stack) + TASK_SS - 1) & (~0xFULL));// Ensure 16byte alignment
newt->frame.ip = (uint64_t) fn;
newt->frame.cs = GDTSEL(gdt_code);
newt->frame.ss = GDTSEL(gdt_data);
for (int i = 0; i < 512; i++) newt->frame.ssestate[i] = 0;
for (int i = 0; i < 512; i++) newt->fxsave[i] = 0;
newt->frame.flags = flags();
newt->frame.guard = IDT_GUARD;
newt->addressSpace = KERN_AddressSpace;
@@ -249,6 +255,7 @@ extern "C" void switch_task(struct task_frame *cur_frame) {
if (RunningTask) {
RunningTask->task->frame = *cur_frame;
memcpy(RunningTask->task->fxsave, temp_fxsave, 512);
if (RunningTask->task->state == TS_RUNNING) {
assert2(RunningTask->next == NULL, "next should be removed from RunningTask!");
append_task_node(&NextTasks, RunningTask);
@@ -315,6 +322,7 @@ extern "C" void switch_task(struct task_frame *cur_frame) {
RunningTask = next;
*cur_frame = RunningTask->task->frame;
memcpy(temp_fxsave, RunningTask->task->fxsave, 512);
sanity_check_frame(cur_frame);
}