Updated x86emu and resynced with upsteam at Scitech.

16 files changed, 166 insertions, 415 deletions

diff --git a/hw/xfree86/x86emu/debug.c b/hw/xfree86/x86emu/debug.c
index 481374d53..6fd7f11cf 100644
--- a/hw/xfree86/x86emu/debug.c
+++ b/hw/xfree86/x86emu/debug.c
@@ -36,12 +36,9 @@
 *				emulator.
 *
 ****************************************************************************/
-/* $XFree86: xc/extras/x86emu/src/x86emu/debug.c,v 1.2 2000/04/05 18:13:14 dawes Exp $ */
 
 #include "x86emu/x86emui.h"
-#ifdef IN_MODULE
-#include "xf86_ansic.h"
-#else
+#ifndef NO_SYS_HEADERS
 #include <stdarg.h>
 #include <stdlib.h>
 #endif
@@ -307,7 +304,8 @@ void x86emu_single_step (void)
             }
             break;
           case 'q':
-            exit(1);
+          M.x86.debug |= DEBUG_EXIT;
+          return;
 	  case 'P':
 	      noDecode = (noDecode)?0:1;
 	      printk("Toggled decoding to %s\n",(noDecode)?"FALSE":"TRUE");
diff --git a/hw/xfree86/x86emu/decode.c b/hw/xfree86/x86emu/decode.c
index 45a1a4b4c..25415d9fa 100644
--- a/hw/xfree86/x86emu/decode.c
+++ b/hw/xfree86/x86emu/decode.c
@@ -37,8 +37,6 @@
 *
 ****************************************************************************/
 
-/* $XdotOrg: xc/extras/x86emu/src/x86emu/decode.c,v 1.12 2003/12/05 19:23:23 dawes Exp $ */
-/* $XFree86: xc/extras/x86emu/src/x86emu/decode.c,v 1.11 2002/07/23 20:20:43 tsi Exp $ */
 
 #include "x86emu/x86emui.h"
 
@@ -105,8 +103,14 @@ DB(		if (CHECK_IP_FETCH())
 		INC_DECODED_INST_LEN(1);
 		if (M.x86.intr) {
 			if (M.x86.intr & INTR_HALTED) {
-DB(				printk("halted\n");
-				X86EMU_trace_regs();)
+DB(             if (M.x86.R_SP != 0) {
+                    printk("halted\n");
+                    X86EMU_trace_regs();
+                    }
+                else {
+                    if (M.x86.debug)
+                        printk("Service completed successfully\n");
+                    })
 				return;
             }
 			if (((M.x86.intr & INTR_SYNCH) && (M.x86.intno == 0 || M.x86.intno == 2)) ||
@@ -116,6 +120,10 @@ DB(				printk("halted\n");
 		}
 		op1 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++));
 		(*x86emu_optab[op1])(op1);
+        if (M.x86.debug & DEBUG_EXIT) {
+            M.x86.debug &= ~DEBUG_EXIT;
+            return;
+        }
     }
 }
 
@@ -834,6 +842,7 @@ u32 decode_rm00_address(
     int sib;
 
     if (M.x86.mode & SYSMODE_PREFIX_ADDR) {
+        /* 32-bit addressing */
 	switch (rm) {
 	  case 0:
 		DECODE_PRINTF("[EAX]");
@@ -863,21 +872,22 @@ u32 decode_rm00_address(
 	}
 	HALT_SYS();
     } else {
+        /* 16-bit addressing */
 	switch (rm) {
 	  case 0:
 		DECODE_PRINTF("[BX+SI]");
-		return M.x86.R_BX + M.x86.R_SI;
+            return (M.x86.R_BX + M.x86.R_SI) & 0xffff;
 	  case 1:
 		DECODE_PRINTF("[BX+DI]");
-		return M.x86.R_BX + M.x86.R_DI;
+            return (M.x86.R_BX + M.x86.R_DI) & 0xffff;
 	  case 2:
 		DECODE_PRINTF("[BP+SI]");
 		M.x86.mode |= SYSMODE_SEG_DS_SS;
-		return M.x86.R_BP + M.x86.R_SI;
+            return (M.x86.R_BP + M.x86.R_SI) & 0xffff;
 	  case 3:
 		DECODE_PRINTF("[BP+DI]");
 		M.x86.mode |= SYSMODE_SEG_DS_SS;
-		return M.x86.R_BP + M.x86.R_DI;
+            return (M.x86.R_BP + M.x86.R_DI) & 0xffff;
 	  case 4:
 		DECODE_PRINTF("[SI]");
 		return M.x86.R_SI;
@@ -919,6 +929,7 @@ u32 decode_rm01_address(
 	displacement = (s8)fetch_byte_imm();
 
     if (M.x86.mode & SYSMODE_PREFIX_ADDR) {
+        /* 32-bit addressing */
 	switch (rm) {
 	  case 0:
 		DECODE_PRINTF2("%d[EAX]", displacement);
@@ -949,34 +960,35 @@ u32 decode_rm01_address(
 	}
 	HALT_SYS();
     } else {
+        /* 16-bit addressing */
 	switch (rm) {
 	  case 0:
 		DECODE_PRINTF2("%d[BX+SI]", displacement);
-		return M.x86.R_BX + M.x86.R_SI + displacement;
+            return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff;
 	  case 1:
 		DECODE_PRINTF2("%d[BX+DI]", displacement);
-		return M.x86.R_BX + M.x86.R_DI + displacement;
+            return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff;
 	  case 2:
 		DECODE_PRINTF2("%d[BP+SI]", displacement);
 		M.x86.mode |= SYSMODE_SEG_DS_SS;
-		return M.x86.R_BP + M.x86.R_SI + displacement;
+            return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff;
 	  case 3:
 		DECODE_PRINTF2("%d[BP+DI]", displacement);
 		M.x86.mode |= SYSMODE_SEG_DS_SS;
-		return M.x86.R_BP + M.x86.R_DI + displacement;
+            return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff;
 	  case 4:
 		DECODE_PRINTF2("%d[SI]", displacement);
-		return M.x86.R_SI + displacement;
+            return (M.x86.R_SI + displacement) & 0xffff;
 	  case 5:
 		DECODE_PRINTF2("%d[DI]", displacement);
-		return M.x86.R_DI + displacement;
+            return (M.x86.R_DI + displacement) & 0xffff;
 	  case 6:
 		DECODE_PRINTF2("%d[BP]", displacement);
 		M.x86.mode |= SYSMODE_SEG_DS_SS;
-		return M.x86.R_BP + displacement;
+            return (M.x86.R_BP + displacement) & 0xffff;
 	  case 7:
 		DECODE_PRINTF2("%d[BX]", displacement);
-		return M.x86.R_BX + displacement;
+            return (M.x86.R_BX + displacement) & 0xffff;
 	}
 	HALT_SYS();
     }
@@ -1010,6 +1022,7 @@ u32 decode_rm10_address(
     }
 
     if (M.x86.mode & SYSMODE_PREFIX_ADDR) {
+        /* 32-bit addressing */
       switch (rm) {
 	  case 0:
 		DECODE_PRINTF2("%08x[EAX]", displacement);
@@ -1042,34 +1055,35 @@ u32 decode_rm10_address(
 	}
 	HALT_SYS();
     } else {
+        /* 16-bit addressing */
       switch (rm) {
 	  case 0:
-		DECODE_PRINTF2("%04x[BX+SI]", displacement);
-		return M.x86.R_BX + M.x86.R_SI + displacement;
+            DECODE_PRINTF2("%04x[BX+SI]", displacement);
+            return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff;
 	  case 1:
-		DECODE_PRINTF2("%04x[BX+DI]", displacement);
-		return M.x86.R_BX + M.x86.R_DI + displacement;
+            DECODE_PRINTF2("%04x[BX+DI]", displacement);
+            return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff;
 	  case 2:
 		DECODE_PRINTF2("%04x[BP+SI]", displacement);
 		M.x86.mode |= SYSMODE_SEG_DS_SS;
-		return M.x86.R_BP + M.x86.R_SI + displacement;
+            return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff;
 	  case 3:
 		DECODE_PRINTF2("%04x[BP+DI]", displacement);
 		M.x86.mode |= SYSMODE_SEG_DS_SS;
-		return M.x86.R_BP + M.x86.R_DI + displacement;
+            return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff;
 	  case 4:
-		DECODE_PRINTF2("%04x[SI]", displacement);
-		return M.x86.R_SI + displacement;
+            DECODE_PRINTF2("%04x[SI]", displacement);
+            return (M.x86.R_SI + displacement) & 0xffff;
 	  case 5:
-		DECODE_PRINTF2("%04x[DI]", displacement);
-		return M.x86.R_DI + displacement;
+            DECODE_PRINTF2("%04x[DI]", displacement);
+            return (M.x86.R_DI + displacement) & 0xffff;
 	  case 6:
 		DECODE_PRINTF2("%04x[BP]", displacement);
 		M.x86.mode |= SYSMODE_SEG_DS_SS;
-		return M.x86.R_BP + displacement;
+            return (M.x86.R_BP + displacement) & 0xffff;
 	  case 7:
-		DECODE_PRINTF2("%04x[BX]", displacement);
-		return M.x86.R_BX + displacement;
+            DECODE_PRINTF2("%04x[BX]", displacement);
+            return (M.x86.R_BX + displacement) & 0xffff;
 	}
 	HALT_SYS();
     }
diff --git a/hw/xfree86/x86emu/fpu.c b/hw/xfree86/x86emu/fpu.c
index 4b801dc94..b72de1ee5 100644
--- a/hw/xfree86/x86emu/fpu.c
+++ b/hw/xfree86/x86emu/fpu.c
@@ -36,7 +36,6 @@
 *               emulation of the FPU instructions.
 *
 ****************************************************************************/
-/* $XFree86$ */
 
 #include "x86emu/x86emui.h"
 
diff --git a/hw/xfree86/x86emu/ops.c b/hw/xfree86/x86emu/ops.c
index 88ee7e108..37ae2c9c9 100644
--- a/hw/xfree86/x86emu/ops.c
+++ b/hw/xfree86/x86emu/ops.c
@@ -70,8 +70,6 @@
 *
 ****************************************************************************/
 
-/* $XFree86: xc/extras/x86emu/src/x86emu/ops.c,v 1.8tsi Exp $ */
-
 #include "x86emu/x86emui.h"
 
 /*----------------------------- Implementation ----------------------------*/
@@ -87,11 +85,22 @@ static void x86emuOp_illegal_op(
     u8 op1)
 {
     START_OF_INSTR();
+    if (M.x86.R_SP != 0) {
     DECODE_PRINTF("ILLEGAL X86 OPCODE\n");
     TRACE_REGS();
-    printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n",
-        M.x86.R_CS, M.x86.R_IP-1,op1);
+    DB( printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n",
+        M.x86.R_CS, M.x86.R_IP-1,op1));
     HALT_SYS();
+        }
+    else {
+        /* If we get here, it means the stack pointer is back to zero
+         * so we are just returning from an emulator service call
+         * so therte is no need to display an error message. We trap
+         * the emulator with an 0xF1 opcode to finish the service
+         * call.
+         */
+        X86EMU_halt_sys();
+        }
     END_OF_INSTR();
 }
 
@@ -9404,6 +9413,8 @@ static void x86emuOp_aam(u8 X86EMU_UNUSED(op1))
     DECODE_PRINTF("AAM\n");
     a = fetch_byte_imm();      /* this is a stupid encoding. */
     if (a != 10) {
+	/* fix: add base decoding
+	   aam_word(u8 val, int base a) */
         DECODE_PRINTF("ERROR DECODING AAM\n");
         TRACE_REGS();
         HALT_SYS();
@@ -9421,9 +9432,18 @@ Handles opcode 0xd5
 ****************************************************************************/
 static void x86emuOp_aad(u8 X86EMU_UNUSED(op1))
 {
+    u8 a;
+
     START_OF_INSTR();
     DECODE_PRINTF("AAD\n");
-    (void) fetch_byte_imm();
+    a = fetch_byte_imm();
+    if (a != 10) {
+	/* fix: add base decoding
+	   aad_word(u16 val, int base a) */
+        DECODE_PRINTF("ERROR DECODING AAM\n");
+        TRACE_REGS();
+        HALT_SYS();
+    }
     TRACE_AND_STEP();
     M.x86.R_AX = aad_word(M.x86.R_AX);
     DECODE_CLEAR_SEGOVR();
diff --git a/hw/xfree86/x86emu/ops2.c b/hw/xfree86/x86emu/ops2.c
index 7cb585bc8..d9e5de9c5 100644
--- a/hw/xfree86/x86emu/ops2.c
+++ b/hw/xfree86/x86emu/ops2.c
@@ -37,7 +37,6 @@
 *               instructions.
 *
 ****************************************************************************/
-/* $XFree86: xc/extras/x86emu/src/x86emu/ops2.c,v 1.6tsi Exp $ */
 
 #include "x86emu/x86emui.h"
 
diff --git a/hw/xfree86/x86emu/prim_ops.c b/hw/xfree86/x86emu/prim_ops.c
index ba4ffdeda..56ab8cc9a 100644
--- a/hw/xfree86/x86emu/prim_ops.c
+++ b/hw/xfree86/x86emu/prim_ops.c
@@ -102,8 +102,6 @@
 
 /*------------------------- Global Variables ------------------------------*/
 
-#ifndef	__HAVE_INLINE_ASSEMBLER__
-
 static u32 x86emu_parity_tab[8] =
 {
 	0x96696996,
@@ -116,15 +114,11 @@ static u32 x86emu_parity_tab[8] =
 	0x69969669,
 };
 
-#endif
-
 #define PARITY(x)   (((x86emu_parity_tab[(x) / 32] >> ((x) % 32)) & 1) == 0)
 #define XOR2(x) 	(((x) ^ ((x)>>1)) & 0x1)
 
 /*----------------------------- Implementation ----------------------------*/
 
-#ifndef	__HAVE_INLINE_ASSEMBLER__
-
 /****************************************************************************
 REMARKS:
 Implements the AAA instruction and side effects.
@@ -2454,8 +2448,6 @@ void div_long(u32 s)
 	M.x86.R_EDX = (u32)mod;
 }
 
-#endif	/* __HAVE_INLINE_ASSEMBLER__ */
-
 /****************************************************************************
 REMARKS:
 Implements the IN string instruction and side effects.
@@ -2660,255 +2652,3 @@ DB(	if (CHECK_SP_ACCESS())
     return res;
 }
 
-#ifdef	__HAVE_INLINE_ASSEMBLER__
-
-u16 aaa_word (u16 d)
-{ return aaa_word_asm(&M.x86.R_EFLG,d); }
-
-u16 aas_word (u16 d)
-{ return aas_word_asm(&M.x86.R_EFLG,d); }
-
-u16 aad_word (u16 d)
-{ return aad_word_asm(&M.x86.R_EFLG,d); }
-
-u16 aam_word (u8 d)
-{ return aam_word_asm(&M.x86.R_EFLG,d); }
-
-u8 adc_byte (u8 d, u8 s)
-{ return adc_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 adc_word (u16 d, u16 s)
-{ return adc_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 adc_long (u32 d, u32 s)
-{ return adc_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 add_byte (u8 d, u8 s)
-{ return add_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 add_word (u16 d, u16 s)
-{ return add_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 add_long (u32 d, u32 s)
-{ return add_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 and_byte (u8 d, u8 s)
-{ return and_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 and_word (u16 d, u16 s)
-{ return and_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 and_long (u32 d, u32 s)
-{ return and_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 cmp_byte (u8 d, u8 s)
-{ return cmp_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 cmp_word (u16 d, u16 s)
-{ return cmp_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 cmp_long (u32 d, u32 s)
-{ return cmp_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 daa_byte (u8 d)
-{ return daa_byte_asm(&M.x86.R_EFLG,d); }
-
-u8 das_byte (u8 d)
-{ return das_byte_asm(&M.x86.R_EFLG,d); }
-
-u8 dec_byte (u8 d)
-{ return dec_byte_asm(&M.x86.R_EFLG,d); }
-
-u16 dec_word (u16 d)
-{ return dec_word_asm(&M.x86.R_EFLG,d); }
-
-u32 dec_long (u32 d)
-{ return dec_long_asm(&M.x86.R_EFLG,d); }
-
-u8 inc_byte (u8 d)
-{ return inc_byte_asm(&M.x86.R_EFLG,d); }
-
-u16 inc_word (u16 d)
-{ return inc_word_asm(&M.x86.R_EFLG,d); }
-
-u32 inc_long (u32 d)
-{ return inc_long_asm(&M.x86.R_EFLG,d); }
-
-u8 or_byte (u8 d, u8 s)
-{ return or_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 or_word (u16 d, u16 s)
-{ return or_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 or_long (u32 d, u32 s)
-{ return or_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 neg_byte (u8 s)
-{ return neg_byte_asm(&M.x86.R_EFLG,s); }
-
-u16 neg_word (u16 s)
-{ return neg_word_asm(&M.x86.R_EFLG,s); }
-
-u32 neg_long (u32 s)
-{ return neg_long_asm(&M.x86.R_EFLG,s); }
-
-u8 not_byte (u8 s)
-{ return not_byte_asm(&M.x86.R_EFLG,s); }
-
-u16 not_word (u16 s)
-{ return not_word_asm(&M.x86.R_EFLG,s); }
-
-u32 not_long (u32 s)
-{ return not_long_asm(&M.x86.R_EFLG,s); }
-
-u8 rcl_byte (u8 d, u8 s)
-{ return rcl_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 rcl_word (u16 d, u8 s)
-{ return rcl_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 rcl_long (u32 d, u8 s)
-{ return rcl_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 rcr_byte (u8 d, u8 s)
-{ return rcr_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 rcr_word (u16 d, u8 s)
-{ return rcr_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 rcr_long (u32 d, u8 s)
-{ return rcr_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 rol_byte (u8 d, u8 s)
-{ return rol_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 rol_word (u16 d, u8 s)
-{ return rol_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 rol_long (u32 d, u8 s)
-{ return rol_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 ror_byte (u8 d, u8 s)
-{ return ror_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 ror_word (u16 d, u8 s)
-{ return ror_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 ror_long (u32 d, u8 s)
-{ return ror_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 shl_byte (u8 d, u8 s)
-{ return shl_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 shl_word (u16 d, u8 s)
-{ return shl_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 shl_long (u32 d, u8 s)
-{ return shl_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 shr_byte (u8 d, u8 s)
-{ return shr_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 shr_word (u16 d, u8 s)
-{ return shr_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 shr_long (u32 d, u8 s)
-{ return shr_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 sar_byte (u8 d, u8 s)
-{ return sar_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 sar_word (u16 d, u8 s)
-{ return sar_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 sar_long (u32 d, u8 s)
-{ return sar_long_asm(&M.x86.R_EFLG,d,s); }
-
-u16 shld_word (u16 d, u16 fill, u8 s)
-{ return shld_word_asm(&M.x86.R_EFLG,d,fill,s); }
-
-u32 shld_long (u32 d, u32 fill, u8 s)
-{ return shld_long_asm(&M.x86.R_EFLG,d,fill,s); }
-
-u16 shrd_word (u16 d, u16 fill, u8 s)
-{ return shrd_word_asm(&M.x86.R_EFLG,d,fill,s); }
-
-u32 shrd_long (u32 d, u32 fill, u8 s)
-{ return shrd_long_asm(&M.x86.R_EFLG,d,fill,s); }
-
-u8 sbb_byte (u8 d, u8 s)
-{ return sbb_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 sbb_word (u16 d, u16 s)
-{ return sbb_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 sbb_long (u32 d, u32 s)
-{ return sbb_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 sub_byte (u8 d, u8 s)
-{ return sub_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 sub_word (u16 d, u16 s)
-{ return sub_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 sub_long (u32 d, u32 s)
-{ return sub_long_asm(&M.x86.R_EFLG,d,s); }
-
-void test_byte (u8 d, u8 s)
-{ test_byte_asm(&M.x86.R_EFLG,d,s); }
-
-void test_word (u16 d, u16 s)
-{ test_word_asm(&M.x86.R_EFLG,d,s); }
-
-void test_long (u32 d, u32 s)
-{ test_long_asm(&M.x86.R_EFLG,d,s); }
-
-u8 xor_byte (u8 d, u8 s)
-{ return xor_byte_asm(&M.x86.R_EFLG,d,s); }
-
-u16 xor_word (u16 d, u16 s)
-{ return xor_word_asm(&M.x86.R_EFLG,d,s); }
-
-u32 xor_long (u32 d, u32 s)
-{ return xor_long_asm(&M.x86.R_EFLG,d,s); }
-
-void imul_byte (u8 s)
-{ imul_byte_asm(&M.x86.R_EFLG,&M.x86.R_AX,M.x86.R_AL,s); }
-
-void imul_word (u16 s)
-{ imul_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,s); }
-
-void imul_long (u32 s)
-{ imul_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s); }
-
-void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s)
-{ imul_long_asm(&M.x86.R_EFLG,res_lo,res_hi,d,s); }
-
-void mul_byte (u8 s)
-{ mul_byte_asm(&M.x86.R_EFLG,&M.x86.R_AX,M.x86.R_AL,s); }
-
-void mul_word (u16 s)
-{ mul_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,s); }
-
-void mul_long (u32 s)
-{ mul_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s); }
-
-void idiv_byte (u8 s)
-{ idiv_byte_asm(&M.x86.R_EFLG,&M.x86.R_AL,&M.x86.R_AH,M.x86.R_AX,s); }
-
-void idiv_word (u16 s)
-{ idiv_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,M.x86.R_DX,s); }
-
-void idiv_long (u32 s)
-{ idiv_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,M.x86.R_EDX,s); }
-
-void div_byte (u8 s)
-{ div_byte_asm(&M.x86.R_EFLG,&M.x86.R_AL,&M.x86.R_AH,M.x86.R_AX,s); }
-
-void div_word (u16 s)
-{ div_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,M.x86.R_DX,s); }
-
-void div_long (u32 s)
-{ div_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,M.x86.R_EDX,s); }
-
-#endif
diff --git a/hw/xfree86/x86emu/sys.c b/hw/xfree86/x86emu/sys.c
index 39941360d..4d90ea315 100644
--- a/hw/xfree86/x86emu/sys.c
+++ b/hw/xfree86/x86emu/sys.c
@@ -39,16 +39,13 @@
 *				user library.
 *
 ****************************************************************************/
-/* $XFree86: xc/extras/x86emu/src/x86emu/sys.c,v 1.6 2002/09/16 18:05:18 eich Exp $ */
 
 #include "x86emu.h"
 #include "x86emu/x86emui.h"
 #include "x86emu/regs.h"
 #include "x86emu/debug.h"
 #include "x86emu/prim_ops.h"
-#ifdef IN_MODULE
-#include "xf86_ansic.h"
-#else
+#ifndef NO_SYS_HEADERS
 #include <string.h>
 #endif                                                                                           
 /*------------------------- Global Variables ------------------------------*/
@@ -60,6 +57,7 @@ X86EMU_intrFuncs	_X86EMU_intrTab[256];
 #if defined(__alpha__) || defined(__alpha)
 /* to cope with broken egcs-1.1.2 :-(((( */
 
+#define ALPHA_UALOADS
 /*
  * inline functions to do unaligned accesses
  * from linux/include/asm-alpha/unaligned.h
@@ -211,6 +209,60 @@ static __inline__ void stw_u(unsigned long r5, unsigned short * r11)
 		:"r" (r5), "r" (r11));
 #endif
 }
+
+#elif defined(__GNUC__) && ((__GNUC__ < 3)) && \
+             (defined (__ia64__) || defined (ia64__))
+#define IA64_UALOADS
+/*
+ * EGCS 1.1 knows about arbitrary unaligned loads.  Define some
+ * packed structures to talk about such things with.
+ */
+struct __una_u64 { unsigned long  x __attribute__((packed)); };
+struct __una_u32 { unsigned int   x __attribute__((packed)); };
+struct __una_u16 { unsigned short x __attribute__((packed)); };
+
+static __inline__ unsigned long
+__uldq (const unsigned long * r11)
+{
+    const struct __una_u64 *ptr = (const struct __una_u64 *) r11;
+    return ptr->x;
+}
+
+static __inline__ unsigned long
+uldl (const unsigned int * r11)
+{
+    const struct __una_u32 *ptr = (const struct __una_u32 *) r11;
+    return ptr->x;
+}
+
+static __inline__ unsigned long
+uldw (const unsigned short * r11)
+{
+    const struct __una_u16 *ptr = (const struct __una_u16 *) r11;
+    return ptr->x;
+}
+
+static __inline__ void
+ustq (unsigned long r5, unsigned long * r11)
+{
+    struct __una_u64 *ptr = (struct __una_u64 *) r11;
+    ptr->x = r5;
+}
+
+static __inline__ void
+ustl (unsigned long r5, unsigned int * r11)
+{
+    struct __una_u32 *ptr = (struct __una_u32 *) r11;
+    ptr->x = r5;
+}
+
+static __inline__ void
+ustw (unsigned long r5, unsigned short * r11)
+{
+    struct __una_u16 *ptr = (struct __una_u16 *) r11;
+    ptr->x = r5;
+}
+
 #endif
 
 /****************************************************************************
@@ -264,8 +316,10 @@ u16 X86API rdw(
 		}
 	else
 #endif
-#if defined(__alpha__) || defined(__alpha)
+#if defined(ALPHA_UALOADS)
 		val = ldw_u((u16*)(M.mem_base + addr));
+#elif  defined(IA64_UALOADS)
+      val = uldw((u16*)(M.mem_base + addr));
 #else
 		val = *(u16*)(M.mem_base + addr);
 #endif
@@ -301,8 +355,10 @@ u32 X86API rdl(
 		}
 	else
 #endif
-#if defined(__alpha__) || defined(__alpha)
+#if defined(ALPHA_UALOADS)
 		val = ldl_u((u32*)(M.mem_base + addr));
+#elif  defined(IA64_UALOADS)
+        val = uldl((u32*)(M.mem_base + addr));
 #else
 		val = *(u32*)(M.mem_base + addr);
 #endif
@@ -357,8 +413,10 @@ DB(	if (DEBUG_MEM_TRACE())
 		}
 	else
 #endif
-#if defined(__alpha__) || defined(__alpha)
+#if defined(ALPHA_UALOADS)
 	 stw_u(val,(u16*)(M.mem_base + addr));
+#elif defined(IA64_UALOADS)
+     ustw(val,(u16*)(M.mem_base + addr));
 #else
 	 *(u16*)(M.mem_base + addr) = val;
 #endif
@@ -391,8 +449,10 @@ DB(	if (DEBUG_MEM_TRACE())
 		}
 	else
 #endif
-#if defined(__alpha__) || defined(__alpha)
+#if defined(ALPHA_UALOADS)
 	 stl_u(val,(u32*)(M.mem_base + addr));
+#elif defined(IA64_UALOADS)
+     ustl(val,(u32*)(M.mem_base + addr));
 #else
 	 *(u32*)(M.mem_base + addr) = val;
 #endif
diff --git a/hw/xfree86/x86emu/x86emu.h b/hw/xfree86/x86emu/x86emu.h
index 1df9ac50d..795e2d688 100644
--- a/hw/xfree86/x86emu/x86emu.h
+++ b/hw/xfree86/x86emu/x86emu.h
@@ -37,7 +37,6 @@
 *               include this header
 *
 ****************************************************************************/
-/* $XFree86$ */
 
 #ifndef __X86EMU_X86EMU_H
 #define __X86EMU_X86EMU_H
@@ -56,7 +55,9 @@ typedef int X86EMU_pioAddr;
 
 /*---------------------- Macros and type definitions ----------------------*/
 
-/*  #pragma	pack(1) */  /* Don't pack structs with function pointers! */
+#ifdef PACK
+# pragma	PACK   /* Don't pack structs with function pointers! */
+#endif
 
 /****************************************************************************
 REMARKS:
@@ -129,8 +130,10 @@ extern u32 X86API rdl(u32 addr);
 extern void X86API wrb(u32 addr, u8 val);
 extern void X86API wrw(u32 addr, u16 val);
 extern void X86API wrl(u32 addr, u32 val);
- 
-/*  #pragma	pack() */
+
+#ifdef END_PACK
+# pragma	END_PACK
+#endif
 
 /*--------------------- type definitions -----------------------------------*/
 
@@ -169,6 +172,7 @@ void 	X86EMU_halt_sys(void);
 #define DEBUG_DISASSEMBLE_F     0x000008
 #define DEBUG_BREAK_F           0x000010
 #define DEBUG_SVC_F             0x000020
+#define DEBUG_SAVE_IP_CS_F      0x000040
 #define DEBUG_FS_F              0x000080
 #define DEBUG_PROC_F            0x000100
 #define DEBUG_SYSINT_F          0x000200 /* bios system interrupts. */
@@ -178,7 +182,7 @@ void 	X86EMU_halt_sys(void);
 #define DEBUG_IO_TRACE_F        0x002000 
 #define DEBUG_TRACECALL_REGS_F  0x004000
 #define DEBUG_DECODE_NOPRINT_F  0x008000 
-#define DEBUG_SAVE_IP_CS_F      0x010000
+#define DEBUG_EXIT              0x010000
 #define DEBUG_SYS_F             (DEBUG_SVC_F|DEBUG_FS_F|DEBUG_PROC_F)
 
 void 	X86EMU_trace_regs(void);
diff --git a/hw/xfree86/x86emu/x86emu/debug.h b/hw/xfree86/x86emu/x86emu/debug.h
index 8abedf616..47aacb6c3 100644
--- a/hw/xfree86/x86emu/x86emu/debug.h
+++ b/hw/xfree86/x86emu/x86emu/debug.h
@@ -35,7 +35,6 @@
 * Description:  Header file for debug definitions.
 *
 ****************************************************************************/
-/* $XFree86: xc/extras/x86emu/src/x86emu/x86emu/debug.h,v 1.3 2000/04/19 15:48:15 tsi Exp $ */
 
 #ifndef __X86EMU_DEBUG_H
 #define __X86EMU_DEBUG_H
diff --git a/hw/xfree86/x86emu/x86emu/decode.h b/hw/xfree86/x86emu/x86emu/decode.h
index bb2bc0bee..61cd4dc10 100644
--- a/hw/xfree86/x86emu/x86emu/decode.h
+++ b/hw/xfree86/x86emu/x86emu/decode.h
@@ -35,7 +35,6 @@
 * Description:  Header file for instruction decoding logic.
 *
 ****************************************************************************/
-/* $XFree86$ */
 
 #ifndef __X86EMU_DECODE_H
 #define __X86EMU_DECODE_H
diff --git a/hw/xfree86/x86emu/x86emu/fpu_regs.h b/hw/xfree86/x86emu/x86emu/fpu_regs.h
index a125075b7..e59b80783 100644
--- a/hw/xfree86/x86emu/x86emu/fpu_regs.h
+++ b/hw/xfree86/x86emu/x86emu/fpu_regs.h
@@ -35,13 +35,16 @@
 * Description:  Header file for FPU register definitions.
 *
 ****************************************************************************/
-/* $XFree86: xc/extras/x86emu/include/x86emu/fpu_regs.h,v 1.2 2003/10/22 20:03:05 tsi Exp $ */
 
 #ifndef __X86EMU_FPU_REGS_H
 #define __X86EMU_FPU_REGS_H
 
 #ifdef X86_FPU_SUPPORT
 
+#ifdef PACK
+# pragma PACK
+#endif
+
 /* Basic 8087 register can hold any of the following values: */
 
 union x86_fpu_reg_u {
@@ -86,6 +89,10 @@ struct x86_fpu_registers {
     short               x86_fpu_tos, x86_fpu_bos;
 	};
 
+#ifdef END_PACK
+# pragma END_PACK
+#endif
+
 /*
  * There are two versions of the following macro.
  *
diff --git a/hw/xfree86/x86emu/x86emu/prim_asm.h b/hw/xfree86/x86emu/x86emu/prim_asm.h
index 041255f18..e023cf88d 100644
--- a/hw/xfree86/x86emu/x86emu/prim_asm.h
+++ b/hw/xfree86/x86emu/x86emu/prim_asm.h
@@ -39,7 +39,6 @@
 *				platform.
 *
 ****************************************************************************/
-/* $XFree86$ */
 
 #ifndef	__X86EMU_PRIM_ASM_H
 #define	__X86EMU_PRIM_ASM_H
diff --git a/hw/xfree86/x86emu/x86emu/prim_ops.h b/hw/xfree86/x86emu/x86emu/prim_ops.h
index 1633fe1fa..bea8357e4 100644
--- a/hw/xfree86/x86emu/x86emu/prim_ops.h
+++ b/hw/xfree86/x86emu/x86emu/prim_ops.h
@@ -39,8 +39,6 @@
 #ifndef __X86EMU_PRIM_OPS_H
 #define __X86EMU_PRIM_OPS_H
 
-#include "x86emu/prim_asm.h"
-
 #ifdef  __cplusplus
 extern "C" {            			/* Use "C" linkage when in C++ mode */
 #endif
@@ -136,94 +134,6 @@ void    push_long (u32 w);
 u16     pop_word (void);
 u32		pop_long (void);
 
-#if  defined(__HAVE_INLINE_ASSEMBLER__) && !defined(PRIM_OPS_NO_REDEFINE_ASM)
-
-#define	aaa_word(d)		aaa_word_asm(&M.x86.R_EFLG,d)
-#define aas_word(d)		aas_word_asm(&M.x86.R_EFLG,d)
-#define aad_word(d)		aad_word_asm(&M.x86.R_EFLG,d)
-#define aam_word(d)		aam_word_asm(&M.x86.R_EFLG,d)
-#define adc_byte(d,s)	adc_byte_asm(&M.x86.R_EFLG,d,s)
-#define adc_word(d,s)	adc_word_asm(&M.x86.R_EFLG,d,s)
-#define adc_long(d,s)	adc_long_asm(&M.x86.R_EFLG,d,s)
-#define add_byte(d,s) 	add_byte_asm(&M.x86.R_EFLG,d,s)
-#define add_word(d,s)	add_word_asm(&M.x86.R_EFLG,d,s)
-#define add_long(d,s)	add_long_asm(&M.x86.R_EFLG,d,s)
-#define and_byte(d,s)	and_byte_asm(&M.x86.R_EFLG,d,s)
-#define and_word(d,s)	and_word_asm(&M.x86.R_EFLG,d,s)
-#define and_long(d,s)	and_long_asm(&M.x86.R_EFLG,d,s)
-#define cmp_byte(d,s)	cmp_byte_asm(&M.x86.R_EFLG,d,s)
-#define cmp_word(d,s)	cmp_word_asm(&M.x86.R_EFLG,d,s)
-#define cmp_long(d,s)	cmp_long_asm(&M.x86.R_EFLG,d,s)
-#define daa_byte(d)		daa_byte_asm(&M.x86.R_EFLG,d)
-#define das_byte(d)		das_byte_asm(&M.x86.R_EFLG,d)
-#define dec_byte(d)		dec_byte_asm(&M.x86.R_EFLG,d)
-#define dec_word(d)		dec_word_asm(&M.x86.R_EFLG,d)
-#define dec_long(d)		dec_long_asm(&M.x86.R_EFLG,d)
-#define inc_byte(d)		inc_byte_asm(&M.x86.R_EFLG,d)
-#define inc_word(d)		inc_word_asm(&M.x86.R_EFLG,d)
-#define inc_long(d)		inc_long_asm(&M.x86.R_EFLG,d)
-#define or_byte(d,s)	or_byte_asm(&M.x86.R_EFLG,d,s)
-#define or_word(d,s)	or_word_asm(&M.x86.R_EFLG,d,s)
-#define or_long(d,s)	or_long_asm(&M.x86.R_EFLG,d,s)
-#define neg_byte(s)		neg_byte_asm(&M.x86.R_EFLG,s)
-#define neg_word(s)		neg_word_asm(&M.x86.R_EFLG,s)
-#define neg_long(s)		neg_long_asm(&M.x86.R_EFLG,s)
-#define not_byte(s)		not_byte_asm(&M.x86.R_EFLG,s)
-#define not_word(s)		not_word_asm(&M.x86.R_EFLG,s)
-#define not_long(s)		not_long_asm(&M.x86.R_EFLG,s)
-#define rcl_byte(d,s)	rcl_byte_asm(&M.x86.R_EFLG,d,s)
-#define rcl_word(d,s)	rcl_word_asm(&M.x86.R_EFLG,d,s)
-#define rcl_long(d,s)	rcl_long_asm(&M.x86.R_EFLG,d,s)
-#define rcr_byte(d,s)	rcr_byte_asm(&M.x86.R_EFLG,d,s)
-#define rcr_word(d,s)	rcr_word_asm(&M.x86.R_EFLG,d,s)
-#define rcr_long(d,s)	rcr_long_asm(&M.x86.R_EFLG,d,s)
-#define rol_byte(d,s)	rol_byte_asm(&M.x86.R_EFLG,d,s)
-#define rol_word(d,s)	rol_word_asm(&M.x86.R_EFLG,d,s)
-#define rol_long(d,s)	rol_long_asm(&M.x86.R_EFLG,d,s)
-#define ror_byte(d,s)	ror_byte_asm(&M.x86.R_EFLG,d,s)
-#define ror_word(d,s)	ror_word_asm(&M.x86.R_EFLG,d,s)
-#define ror_long(d,s)	ror_long_asm(&M.x86.R_EFLG,d,s)
-#define shl_byte(d,s)	shl_byte_asm(&M.x86.R_EFLG,d,s)
-#define shl_word(d,s)	shl_word_asm(&M.x86.R_EFLG,d,s)
-#define shl_long(d,s)	shl_long_asm(&M.x86.R_EFLG,d,s)
-#define shr_byte(d,s)	shr_byte_asm(&M.x86.R_EFLG,d,s)
-#define shr_word(d,s)	shr_word_asm(&M.x86.R_EFLG,d,s)
-#define shr_long(d,s)	shr_long_asm(&M.x86.R_EFLG,d,s)
-#define sar_byte(d,s)	sar_byte_asm(&M.x86.R_EFLG,d,s)
-#define sar_word(d,s)	sar_word_asm(&M.x86.R_EFLG,d,s)
-#define sar_long(d,s)	sar_long_asm(&M.x86.R_EFLG,d,s)
-#define shld_word(d,fill,s)	shld_word_asm(&M.x86.R_EFLG,d,fill,s)
-#define shld_long(d,fill,s)	shld_long_asm(&M.x86.R_EFLG,d,fill,s)
-#define shrd_word(d,fill,s)	shrd_word_asm(&M.x86.R_EFLG,d,fill,s)
-#define shrd_long(d,fill,s)	shrd_long_asm(&M.x86.R_EFLG,d,fill,s)
-#define sbb_byte(d,s)	sbb_byte_asm(&M.x86.R_EFLG,d,s)
-#define sbb_word(d,s)	sbb_word_asm(&M.x86.R_EFLG,d,s)
-#define sbb_long(d,s)	sbb_long_asm(&M.x86.R_EFLG,d,s)
-#define sub_byte(d,s)	sub_byte_asm(&M.x86.R_EFLG,d,s)
-#define sub_word(d,s)	sub_word_asm(&M.x86.R_EFLG,d,s)
-#define sub_long(d,s)	sub_long_asm(&M.x86.R_EFLG,d,s)
-#define test_byte(d,s)	test_byte_asm(&M.x86.R_EFLG,d,s)
-#define test_word(d,s)	test_word_asm(&M.x86.R_EFLG,d,s)
-#define test_long(d,s)	test_long_asm(&M.x86.R_EFLG,d,s)
-#define xor_byte(d,s)	xor_byte_asm(&M.x86.R_EFLG,d,s)
-#define xor_word(d,s)	xor_word_asm(&M.x86.R_EFLG,d,s)
-#define xor_long(d,s)	xor_long_asm(&M.x86.R_EFLG,d,s)
-#define imul_byte(s)	imul_byte_asm(&M.x86.R_EFLG,&M.x86.R_AX,M.x86.R_AL,s)
-#define imul_word(s)	imul_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,s)
-#define imul_long(s)	imul_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s)
-#define imul_long_direct(res_lo,res_hi,d,s)	imul_long_asm(&M.x86.R_EFLG,res_lo,res_hi,d,s)
-#define mul_byte(s)		mul_byte_asm(&M.x86.R_EFLG,&M.x86.R_AX,M.x86.R_AL,s)
-#define mul_word(s)		mul_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,s)
-#define mul_long(s)		mul_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s)
-#define idiv_byte(s)	idiv_byte_asm(&M.x86.R_EFLG,&M.x86.R_AL,&M.x86.R_AH,M.x86.R_AX,s)
-#define idiv_word(s)	idiv_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,M.x86.R_DX,s)
-#define idiv_long(s)	idiv_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,M.x86.R_EDX,s)
-#define div_byte(s)		div_byte_asm(&M.x86.R_EFLG,&M.x86.R_AL,&M.x86.R_AH,M.x86.R_AX,s)
-#define div_word(s)		div_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,M.x86.R_DX,s)
-#define div_long(s)		div_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,M.x86.R_EDX,s)
-
-#endif
-
 #ifdef  __cplusplus
 }                       			/* End of "C" linkage for C++   	*/
 #endif
diff --git a/hw/xfree86/x86emu/x86emu/regs.h b/hw/xfree86/x86emu/x86emu/regs.h
index fba2991d4..52cf8e41b 100644
--- a/hw/xfree86/x86emu/x86emu/regs.h
+++ b/hw/xfree86/x86emu/x86emu/regs.h
@@ -35,13 +35,16 @@
 * Description:  Header file for x86 register definitions.
 *
 ****************************************************************************/
-/* $XFree86: xc/extras/x86emu/include/x86emu/regs.h,v 1.5 2003/10/22 20:03:05 tsi Exp $ */
 
 #ifndef __X86EMU_REGS_H
 #define __X86EMU_REGS_H
 
 /*---------------------- Macros and type definitions ----------------------*/
 
+#ifdef PACK
+# pragma PACK
+#endif
+
 /*
  * General EAX, EBX, ECX, EDX type registers.  Note that for
  * portability, and speed, the issue of byte swapping is not addressed
@@ -303,6 +306,10 @@ typedef struct {
 	X86EMU_regs		x86;
 	} X86EMU_sysEnv;
 
+#ifdef END_PACK
+# pragma END_PACK
+#endif
+
 /*----------------------------- Global Variables --------------------------*/
 
 #ifdef  __cplusplus
diff --git a/hw/xfree86/x86emu/x86emu/types.h b/hw/xfree86/x86emu/x86emu/types.h
index 5232d10ac..c0c09c1b0 100644
--- a/hw/xfree86/x86emu/x86emu/types.h
+++ b/hw/xfree86/x86emu/x86emu/types.h
@@ -36,12 +36,11 @@
 *
 ****************************************************************************/
 
-/* $XFree86: xc/extras/x86emu/include/x86emu/types.h,v 1.6 2003/06/12 14:12:26 eich Exp $ */
 
 #ifndef __X86EMU_TYPES_H
 #define __X86EMU_TYPES_H
 
-#ifndef IN_MODULE
+#ifndef NO_SYS_HEADERS
 #include <sys/types.h>
 #endif
 
diff --git a/hw/xfree86/x86emu/x86emu/x86emui.h b/hw/xfree86/x86emu/x86emu/x86emui.h
index 3adf61ec6..112ee366f 100644
--- a/hw/xfree86/x86emu/x86emu/x86emui.h
+++ b/hw/xfree86/x86emu/x86emu/x86emui.h
@@ -38,7 +38,6 @@
 *
 ****************************************************************************/
 
-/* $XFree86: xc/extras/x86emu/src/x86emu/x86emu/x86emui.h,v 1.3 2000/04/17 16:29:47 eich Exp $ */
 
 #ifndef __X86EMU_X86EMUI_H
 #define __X86EMU_X86EMUI_H
@@ -71,9 +70,7 @@
 #include "x86emu/fpu.h"
 #include "x86emu/fpu_regs.h"
 
-#ifdef IN_MODULE
-#include <xf86_ansic.h>
-#else
+#ifndef NO_SYS_HEADERS
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>