* Port to MinGW

git-svn-id: svn://svn.icculus.org/quake3/trunk@97 edf5b092-35ff-0310-97b2-ce42778d08ea

5 files changed, 50 insertions, 8 deletions

diff --git a/code/qcommon/common.c b/code/qcommon/common.c
index 49f3721..1f7a9ab 100644
--- a/code/qcommon/common.c
+++ b/code/qcommon/common.c
@@ -2817,7 +2817,7 @@ void Com_Shutdown (void) {
 }
 
 #if !( defined __VECTORC )
-#if !( defined __linux__ || defined __FreeBSD__ )  // r010123 - include FreeBSD 
+#if !( defined __linux__ || defined __FreeBSD__ || defined __MINGW32__ )  // r010123 - include FreeBSD 
 #if ((!id386) && (!defined __i386__)) // rcg010212 - for PPC
 
 void Com_Memcpy (void* dest, const void* src, const size_t count)
diff --git a/code/qcommon/md4.c b/code/qcommon/md4.c
index e530b07..5f96838 100644
--- a/code/qcommon/md4.c
+++ b/code/qcommon/md4.c
@@ -1,7 +1,7 @@
 /* GLOBAL.H - RSAREF types and constants */
 
 #include <string.h>
-#if defined(_WIN32)
+#ifdef _MSC_VER
 #pragma warning(disable : 4711)		// selected for automatic inline expansion
 #endif
 
diff --git a/code/qcommon/vm.c b/code/qcommon/vm.c
index 87f0795..3f7a182 100644
--- a/code/qcommon/vm.c
+++ b/code/qcommon/vm.c
@@ -858,7 +858,7 @@ void VM_LogSyscalls( int *args ) {
 
 
 
-#ifdef oDLL_ONLY // bk010215 - for DLL_ONLY dedicated servers/builds w/o VM
+#ifdef DLL_ONLY // bk010215 - for DLL_ONLY dedicated servers/builds w/o VM
 int	VM_CallCompiled( vm_t *vm, int *args ) {
   return(0); 
 }
diff --git a/code/qcommon/vm_interpreted.c b/code/qcommon/vm_interpreted.c
index fb28011..0d0d90f 100644
--- a/code/qcommon/vm_interpreted.c
+++ b/code/qcommon/vm_interpreted.c
@@ -21,6 +21,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 #include "vm_local.h"
 
+//#define	DEBUG_VM
 #ifdef DEBUG_VM // bk001204
 static char	*opnames[256] = {
 	"OP_UNDEF", 
@@ -306,7 +307,6 @@ locals from sp
 */
 #define	MAX_STACK	256
 #define	STACK_MASK	(MAX_STACK-1)
-//#define	DEBUG_VM
 
 #define	DEBUGSTR va("%s%i", VM_Indent(vm), opStack-stack )
 
diff --git a/code/qcommon/vm_x86.c b/code/qcommon/vm_x86.c
index 04abce9..7858616 100644
--- a/code/qcommon/vm_x86.c
+++ b/code/qcommon/vm_x86.c
@@ -60,8 +60,13 @@ int _ftol( float );
 static	int		ftolPtr = (int)_ftol;
 #endif
 
+#ifndef __MINGW32__
 void AsmCall( void );
 static	int		asmCallPtr = (int)AsmCall;
+#else
+void doAsmCall( void );
+static	int		asmCallPtr = (int)doAsmCall;
+#endif
 
 #else // _WIN32
 
@@ -105,7 +110,7 @@ static	ELastCommand	LastCommand;
 AsmCall
 =================
 */
-#ifdef _WIN32
+#ifdef _MSC_VER
 __declspec( naked ) void AsmCall( void ) {
 int		programStack;
 int		*opStack;
@@ -168,7 +173,7 @@ _asm {
 
 }
 
-#else //!_WIN32
+#else //!_MSC_VER
 
 static	int		callProgramStack;
 static	int		*callOpStack;
@@ -185,13 +190,14 @@ void callAsmCall(void)
 	// save the stack to allow recursive VM entry
 	currentVM->programStack = callProgramStack - 4;
 	*(int *)((byte *)currentVM->dataBase + callProgramStack + 4) = callSyscallNum;
-//VM_LogSyscalls(  (int *)((byte *)currentVM->dataBase + programStack + 4) );
+	//VM_LogSyscalls((int *)((byte *)currentVM->dataBase + callProgramStack + 4) );
 	*(callOpStack2+1) = currentVM->systemCall( (int *)((byte *)currentVM->dataBase + callProgramStack + 4) );
 
  	currentVM = savedVM;
 }
 
 void AsmCall( void ) {
+#ifndef __MINGW32__
 	__asm__("doAsmCall:      			\n\t" \
 			"	movl (%%edi),%%eax			\n\t" \
 			"	subl $4,%%edi				\n\t" \
@@ -223,6 +229,42 @@ void AsmCall( void ) {
 			: "rm" (instructionPointers) \
 			: "ax", "di", "si", "cx" \
 	);
+#else
+	// The only difference is _ added to the C symbols. It seems mingw
+	// mangles all symbols this way, like linux gcc does when producing
+	// a.out instead of elf
+	__asm__("_doAsmCall:      			\n\t" \
+			"	movl (%%edi),%%eax			\n\t" \
+			"	subl $4,%%edi				\n\t" \
+			"   orl %%eax,%%eax				\n\t" \
+			"	jl systemCall				\n\t" \
+			"	shll $2,%%eax				\n\t" \
+			"	addl %3,%%eax				\n\t" \
+			"	call *(%%eax)				\n\t" \
+		  " movl (%%edi),%%eax   \n\t" \
+	    " andl _callMask, %%eax \n\t" \
+			"	jmp doret					   \n\t" \
+			"systemCall:					\n\t" \
+			"	negl %%eax					\n\t" \
+			"	decl %%eax					\n\t" \
+			"	movl %%eax,%0				\n\t" \
+			"	movl %%esi,%1				\n\t" \
+			"	movl %%edi,%2				\n\t" \
+			"	pushl %%ecx					\n\t" \
+			"	pushl %%esi					\n\t" \
+			"	pushl %%edi					\n\t" \
+			"	call _callAsmCall			\n\t" \
+			"	popl %%edi					\n\t" \
+			"	popl %%esi					\n\t" \
+			"	popl %%ecx					\n\t" \
+			"	addl $4,%%edi				\n\t" \
+			"doret:							\n\t" \
+			"	ret							\n\t" \
+			: "=rm" (callSyscallNum), "=rm" (callProgramStack), "=rm" (callOpStack) \
+			: "rm" (instructionPointers) \
+			: "ax", "di", "si", "cx" \
+	);
+#endif
 }
 #endif
 
@@ -1140,7 +1182,7 @@ int	VM_CallCompiled( vm_t *vm, int *args ) {
 	entryPoint = vm->codeBase;
 	opStack = &stack;
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 	__asm  {
 		pushad
 		mov		esi, programStack;