added symbiotic interface and a number of other small changes

[palacios.git] / palacios / src / palacios / vm_guest.c

diff --git a/palacios/src/palacios/vm_guest.c b/palacios/src/palacios/vm_guest.c
index 8a2e4d4..94bbc7b 100644 (file)
--- a/palacios/src/palacios/vm_guest.c
+++ b/palacios/src/palacios/vm_guest.c
@@ -25,6 +25,10 @@
 #include <palacios/vmm.h>
 #include <palacios/vmm_decoder.h>
 #include <palacios/vmcb.h>
+#include <palacios/vm_guest_mem.h>
+#include <palacios/vmm_lowlevel.h>
+#include <palacios/vmm_sprintf.h>
+
 
 
 v3_cpu_mode_t v3_get_vm_cpu_mode(struct guest_info * info) {
@@ -173,10 +177,67 @@ void v3_print_segments(struct guest_info * info) {
                   seg_ptr[i].long_mode, seg_ptr[i].db);
 
     }
+}
+
+//
+// We don't handle those fancy 64 bit system segments...
+//
+int v3_translate_segment(struct guest_info * info, uint16_t selector, struct v3_segment * seg) {
+    struct v3_segment * gdt = &(info->segments.gdtr);
+    addr_t gdt_addr = 0;
+    uint16_t seg_offset = (selector & ~0x7);
+    addr_t seg_addr = 0;
+    struct gen_segment * gen_seg = NULL;
+    struct seg_selector sel;
+
+    memset(seg, 0, sizeof(struct v3_segment));
+
+    sel.value = selector;
+
+    if (sel.ti == 1) {
+       PrintError("LDT translations not supported\n");
+       return -1;
+    }
 
+    if (guest_va_to_host_va(info, gdt->base, &gdt_addr) == -1) {
+       PrintError("Unable to translate GDT address\n");
+       return -1;
+    }
+
+    seg_addr = gdt_addr + seg_offset;
+    gen_seg = (struct gen_segment *)seg_addr;
+
+    //translate
+    seg->selector = selector;
+
+    seg->limit = gen_seg->limit_hi;
+    seg->limit <<= 16;
+    seg->limit += gen_seg->limit_lo;
+
+    seg->base = gen_seg->base_hi;
+    seg->base <<= 24;
+    seg->base += gen_seg->base_lo;
+
+    if (gen_seg->granularity == 1) {
+       seg->limit <<= 12;
+       seg->limit |= 0xfff;
+    }
+
+    seg->type = gen_seg->type;
+    seg->system = gen_seg->system;
+    seg->dpl = gen_seg->dpl;
+    seg->present = gen_seg->present;
+    seg->avail = gen_seg->avail;
+    seg->long_mode = gen_seg->long_mode;
+    seg->db = gen_seg->db;
+    seg->granularity = gen_seg->granularity;
+    
+    return 0;
 }
 
 
+
+
 void v3_print_ctrl_regs(struct guest_info * info) {
     struct v3_ctrl_regs * regs = &(info->ctrl_regs);
     int i = 0;