Changeset 8044533 in rtems for cpukit

Timestamp:

07/18/95 19:27:50 (28 years ago)

Author:

Joel Sherrill <joel.sherrill@…>

Branches:

4.10, 4.11, 4.8, 4.9, 5, master

Children:

10aed1e3

Parents:

f67ad3d

Message:

merged Linux UNIX simulator support (C)

Location:

cpukit/score/cpu

Files:

• i386/cpu.c (modified) (2 diffs)
• unix/cpu.c (modified) (1 diff)

cpukit/score/cpu/i386/cpu.c

@@ -74 +74 @@
  
 #if __GO32__
-#include <cpu.h>
 #include <go32.h>
 #include <dpmi.h>
@@ -90 +89 @@
     *old_handler =  0;    /* XXX not supported */
 
-    handler_info.pm_offset = new_handler;
+    handler_info.pm_offset = (u_long) new_handler;
     handler_info.pm_selector = _go32_my_cs();
 

cpukit/score/cpu/unix/cpu.c

@@ -392 +392 @@
   *(addr + SP_OFF) = (unsigned32)(_stack_high - CPU_FRAME_SIZE);
   *(addr + FP_OFF) = (unsigned32)(_stack_high);
+
+#elif defined(i386)
+ 
+    /*
+     *  This information was gathered by disassembling setjmp().
+     */
+ 
+    stack_ptr = _stack_high - CPU_FRAME_SIZE;
+    *(addr + EBX_OFF) = 0xFEEDFEED;
+    *(addr + ESI_OFF) = 0xDEADDEAD;
+    *(addr + EDI_OFF) = 0xDEAFDEAF;
+    *(addr + EBP_OFF) = stack_ptr;
+    *(addr + ESP_OFF) = stack_ptr;
+    *(addr + RET_OFF) = jmp_addr;
+ 
+ 
+    addr = (unsigned32 *) stack_ptr;
+ 
+    addr[ 0 ] = jmp_addr;
+    addr[ 1 ] = (unsigned32) stack_ptr;
+    addr[ 2 ] = (unsigned32) stack_ptr;
+
 #else
 #error "UNKNOWN CPU!!!"