ipc functions. work on process spawning

1 files changed, 41 insertions, 0 deletions

diff --git a/arch/x86_64/proc/process.c b/arch/x86_64/proc/process.c
index 5935303..b10d538 100644
--- a/arch/x86_64/proc/process.c
+++ b/arch/x86_64/proc/process.c
@@ -40,3 +40,44 @@ processing_setup(void (*process_main))
 
     scheduler_init(init_pcb_obj, process_main);
 }
+
+inline physaddr_t 
+pcb_get_syscall_stack(pcb_t *pcb)
+{
+    return pcb->syscall_page.pfn << 12;
+}
+
+inline physaddr_t 
+pcb_get_interrupt_stack(pcb_t *pcb)
+{
+    return pcb->interrupt_page.pfn << 12;
+}
+
+physaddr_t 
+pcb_set_syscall_stack(pcb_t *pcb, physaddr_t page)
+{
+    physaddr_t old_page = pcb_get_syscall_stack(pcb);
+    pcb->syscall_page.pfn = page >> 12;
+    pcb->syscall_page.p = 1;
+    pcb->syscall_page.rw = 1;
+    return old_page;
+}
+physaddr_t 
+pcb_set_interrupt_stack(pcb_t *pcb, physaddr_t page)
+{
+    physaddr_t old_page = pcb_get_interrupt_stack(pcb);
+    pcb->interrupt_page.pfn = page >> 12;
+    pcb->interrupt_page.p = 1;
+    pcb->interrupt_page.rw = 1;
+    return old_page;
+}
+
+inline void pcb_map_syscall_stack(pcb_t *pcb)
+{
+    *__syscall_stack_mapping = pcb->syscall_page.value;
+}
+
+inline void pcb_map_interrupt_stack(pcb_t *pcb)
+{
+    *__interrupt_stack_mapping = pcb->interrupt_page.value;
+}