X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/0ca0e2a565657cd3e37315fe665b45b13daaebf4..0cf90cca0c924622f3fee8d2a3fafa8238363dc6:/lunaix-os/kernel/process/sched.c

diff --git a/lunaix-os/kernel/process/sched.c b/lunaix-os/kernel/process/sched.c
index 19a31c7..ade13b3 100644
--- a/lunaix-os/kernel/process/sched.c
+++ b/lunaix-os/kernel/process/sched.c
@@ -60,23 +60,23 @@ sched_init_dummy()
     extern void my_dummy();
     static char dummy_stack[DUMMY_STACK_SIZE] __attribute__((aligned(16)));
 
-    // memset to 0
-    dummy_proc = (struct proc_info){};
-    dummy_proc.intr_ctx = (isr_param){
-        .registers = { .ds = KDATA_SEG,
-                       .es = KDATA_SEG,
-                       .fs = KDATA_SEG,
-                       .gs = KDATA_SEG,
-                       .esp = (void*)dummy_stack + DUMMY_STACK_SIZE - 20 },
+    struct exec_param* execp =
+      (void*)dummy_stack + DUMMY_STACK_SIZE - sizeof(struct exec_param);
+
+    *execp = (struct exec_param){
         .cs = KCODE_SEG,
+        .eflags = cpu_reflags() | 0x0200,
         .eip = (void*)my_dummy,
         .ss = KDATA_SEG,
-        .eflags = cpu_reflags() | 0x0200
     };
 
-    *(u32_t*)(&dummy_stack[DUMMY_STACK_SIZE - 4]) = dummy_proc.intr_ctx.eflags;
-    *(u32_t*)(&dummy_stack[DUMMY_STACK_SIZE - 8]) = KCODE_SEG;
-    *(u32_t*)(&dummy_stack[DUMMY_STACK_SIZE - 12]) = dummy_proc.intr_ctx.eip;
+    // memset to 0
+    dummy_proc = (struct proc_info){};
+    dummy_proc.intr_ctx = (isr_param){ .registers = { .ds = KDATA_SEG,
+                                                      .es = KDATA_SEG,
+                                                      .fs = KDATA_SEG,
+                                                      .gs = KDATA_SEG },
+                                       .execp = execp };
 
     dummy_proc.page_table = cpu_rcr3();
     dummy_proc.state = PS_READY;
@@ -99,7 +99,7 @@ run(struct proc_info* proc)
         由于这中间没有进行地址空间的交换，所以第二次跳转使用的是同一个内核栈，而之前默认tss.esp0的值是永远指向最顶部
         这样一来就有可能会覆盖更早的上下文信息（比如嵌套的信号捕获函数）
     */
-    tss_update_esp(proc->intr_ctx.registers.esp);
+    tss_update_esp(proc->intr_ctx.esp);
 
     apic_done_servicing();