Changeset 8044533 in rtems

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)

Files:

• c/src/exec/score/cpu/i386/cpu.c (modified) (2 diffs)
• c/src/exec/score/cpu/unix/cpu.c (modified) (1 diff)
• c/src/exec/score/cpu/unix/cpu.h (modified) (3 diffs)
• c/src/exec/score/cpu/unix/unix.h (modified) (1 diff)
• cpukit/score/cpu/i386/cpu.c (modified) (2 diffs)
• cpukit/score/cpu/unix/cpu.c (modified) (1 diff)

c/src/exec/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();
 

c/src/exec/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!!!"

c/src/exec/score/cpu/unix/cpu.h

@@ -265 +265 @@
 #if defined(hppa1_1)
 #define CPU_STACK_GROWS_UP               TRUE
-#elif defined(sparc)
+#elif defined(sparc) || defined(i386)
 #define CPU_STACK_GROWS_UP               FALSE
 #else
@@ -363 +363 @@
 #endif
 
+#if defined(i386)
+ 
+#ifdef RTEMS_NEWLIB
+#error "Newlib not installed"
+#endif
+ 
+/*
+ *  For Linux 1.1
+ */
+ 
+#ifdef RTEMS_UNIXLIB
+#define EBX_OFF    0
+#define ESI_OFF    1
+#define EDI_OFF    2
+#define EBP_OFF    3
+#define ESP_OFF    4
+#define RET_OFF    5
+#endif
+ 
+#endif
+ 
 #if defined(sparc)
 
@@ -516 +537 @@
 #elif defined(sparc)
 #define CPU_FRAME_SIZE  (112)   /* based on disassembled test code */
+#elif defined(i386)
+#define CPU_FRAME_SIZE  (24)  /* return address, sp, and bp pushed plus fudge */
 #else
 #error "Unknown CPU!!!"

c/src/exec/score/cpu/unix/unix.h

@@ -65 +65 @@
 #if defined(hpux)
  
-#define RTEMS_MODEL_NAME  "hpux"
+#define RTEMS_MODEL_NAME  "HP-UX"
  
 #elif defined(solaris)
  
-#define RTEMS_MODEL_NAME  "solaris"
+#define RTEMS_MODEL_NAME  "Solaris"
+ 
+#elif defined(linux)
+ 
+#define RTEMS_MODEL_NAME  "Linux"
  
 #else

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!!!"