1111#ifdef DJGPP
1212#include <go32.h>
1313#include <sys/exceptn.h>
14+ #include <crt0.h>
1415#endif
1516
1617#include "CONFIG.H"
4344bool _InstallInt31 ( void );
4445bool _UninstallInt31 ( void );
4546
46- #ifndef DJGPP
47+ #ifdef DJGPP
48+
49+ int _crt0_startup_flags = _CRT0_FLAG_PRESERVE_FILENAME_CASE | _CRT0_FLAG_KEEP_QUOTES | _CRT0_FLAG_NEARPTR ;
50+
51+ #else
52+
4753uint32_t __djgpp_stack_top ;
4854uint32_t _linear_psp ;
4955uint32_t _linear_rmstack ;
5056uint32_t _get_linear_psp ( void );
5157uint32_t _get_linear_rmstack ( int * );
5258uint32_t _get_stack_top ( void );
5359
60+ extern uint32_t STACKTOP ;
61+
5462/* don't assume hdpmi is loaded - get PSP selector from OW's _psp global var! */
5563#pragma aux _get_linear_psp = \
5664 "mov ebx, [_psp]" \
@@ -73,25 +81,24 @@ uint32_t _get_stack_top( void );
7381 modify exact [bx dx eax]
7482
7583#pragma aux _get_stack_top = \
76- "mov eax, esp " \
84+ "mov eax, [STACKTOP] " \
7785 parm [] \
7886 modify exact[eax];
7987
8088#endif
8189
82- int hAU ; /* handle audioout_info; we don't want to know mpxplay internals */
83- static int freq = 22050 ; /* default value for AU_setrate() */
84-
8590uint8_t bOMode = 1 ; /* 1=output DOS, 2=direct, 4=debugger */
8691
87- #if SETABSVOL
88- extern uint16_t SNDISR_SB_VOL = 0 ; //initial set volume will cause interrupt missing?
89- #endif
92+ struct MAIN_s {
93+ int hAU ; /* handle audioout_info; we don't want to know mpxplay internals */
94+ int freq ; /* default value for AU_setrate() */
95+ bool bISR ; /* 1=ISR installed */
96+ bool bQemm ; /* 1=QPI API found */
97+ bool bHdpmi ;/* 1=HDPMI found */
98+ int bHelp ; /* 1=show help */
99+ };
90100
91- static bool bISR ; /* 1=ISR installed */
92- static bool bQemm = false;
93- static bool bHdpmi = false;
94- static int bHelp = false;
101+ static struct MAIN_s gm = { 0 , 22050 , false, false, false, false };
95102
96103struct globalvars gvars = { BASE_DEFAULT , IRQ_DEFAULT , DMA_DEFAULT ,
97104#if SB16
@@ -112,7 +119,7 @@ static const struct {
112119 const char * desc ;
113120 int * pValue ;
114121} GOptions [] = {
115- "/?" , "Show help" , & bHelp ,
122+ "/?" , "Show help" , & gm . bHelp ,
116123 "/A" , "Set IO base address [220|240, def 220]" , & gvars .base ,
117124 "/I" , "Set IRQ number [2|5|7, def 7]" , & gvars .irq ,
118125 "/D" , "Set DMA channel [0|1|3, def 1]" , & gvars .dma ,
@@ -128,7 +135,7 @@ static const struct {
128135 "/OPL" ,"Set OPL3 emulation [0|1, def 1]" , & gvars .opl3 ,
129136 "/PM" , "Set protected-mode support [0|1, def 1]" , & gvars .pm ,
130137 "/RM" , "Set real-mode support [0|1, def 1]" , & gvars .rm ,
131- "/F" , "Set frequency [22050|44100, def 22050]" , ( int * ) & freq ,
138+ "/F" , "Set frequency [22050|44100, def 22050]" , & gm . freq ,
132139 "/VOL" , "Set master volume [0-9, def 7]" , & gvars .vol ,
133140 "/BS" , "Set PCM buffer size [in 4k pages, def 16]" , & gvars .buffsize ,
134141#if SLOWDOWN
@@ -182,9 +189,9 @@ static void ReleaseRes( void )
182189//////////////////////////////
183190{
184191 _UninstallInt31 (); /* must be called before SNDISR_Exit() */
185- if (bISR ) {
192+ if ( gm . bISR ) {
186193 VIRQ_Exit ( gvars .irq );
187- SNDISR_Exit ( PIC_IRQ2VEC ( AU_getirq ( hAU ) ) );
194+ SNDISR_Exit ();
188195 }
189196
190197 if ( gvars .rm )
@@ -207,7 +214,7 @@ void MAIN_Uninstall( void )
207214///////////////////////////
208215{
209216 ReleaseRes ();
210- AU_close ( hAU );
217+ AU_close ( gm . hAU );
211218 _uninstall_tsr ( _my_psp () ); /* should not return */
212219 return ;
213220}
@@ -219,7 +226,7 @@ void MAIN_ReinitOPL( void )
219226 if ( gvars .opl3 ) {
220227 uint8_t buffer [108 ];
221228 fpu_save (buffer );
222- VOPL3_Reinit ( AU_getfreq ( hAU ) );
229+ VOPL3_Reinit ( AU_getfreq ( gm . hAU ) );
223230 fpu_restore (buffer );
224231 }
225232}
@@ -305,12 +312,12 @@ int main(int argc, char* argv[])
305312 }
306313 }
307314 if ( GOptions [j ].option == NULL )
308- bHelp = true;
315+ gm . bHelp = true;
309316 }
310317
311318 /* if -? or unrecognised option was entered, display help and exit */
312- if ( bHelp ) {
313- bHelp = false;
319+ if ( gm . bHelp ) {
320+ gm . bHelp = false;
314321 printf ("VSBHDA v" VERMAJOR "." VERMINOR "; Sound Blaster emulation on HDA/AC97. Usage:\n" );
315322
316323 for ( i = 0 ; GOptions [i ].option ; i ++ )
@@ -361,8 +368,8 @@ int main(int argc, char* argv[])
361368 printf ("Error: Invalid PCM buffer size %d\n" , gvars .buffsize );
362369 return 1 ;
363370 }
364- if ( freq != 22050 && freq != 44100 ) {
365- printf ("Error: Invalid frequency %d\n" , freq );
371+ if ( gm . freq != 22050 && gm . freq != 44100 ) {
372+ printf ("Error: Invalid frequency %d\n" , gm . freq );
366373 return 1 ;
367374 }
368375#if defined(DJGPP )
@@ -398,24 +405,21 @@ int main(int argc, char* argv[])
398405 }
399406 //aui.card_select_config = gvars.pin;
400407 //aui.card_select_devicenum = gvars.device;
401- if ( (hAU = AU_init ( gvars .device , gvars .pin ) ) == 0 ) {
408+ if ( (gm . hAU = AU_init ( gvars .device , gvars .pin ) ) == 0 ) {
402409 printf ("No soundcard found!\n" );
403410 return 1 ;
404411 }
405- printf ("Found sound card: %s\n" , AU_getshortname ( hAU ) );
406- if ( AU_getirq ( hAU ) == gvars .irq ) {
412+ printf ("Found sound card: %s\n" , AU_getshortname ( gm . hAU ) );
413+ if ( AU_getirq ( gm . hAU ) == gvars .irq ) {
407414 printf ("Sound card IRQ conflict, abort.\n" );
408415 return 1 ;
409416 }
410- AU_setmixer_init ( hAU );
417+ AU_setmixer_init ( gm . hAU );
411418
412- #if SETABSVOL
413- SNDISR_SB_VOL = gvars .vol * 256 /9 ; /* translate 0-9 to 0-256 */
414- #endif
415- AU_setmixer_outs ( hAU , MIXER_SETMODE_ABSOLUTE , gvars .vol * 100 /9 );
416- //AU_setmixer_one( hAU, AU_MIXCHAN_MASTER, MIXER_SETMODE_ABSOLUTE, gvars.vol * 100/9 );
419+ AU_setmixer_outs ( gm .hAU , MIXER_SETMODE_ABSOLUTE , gvars .vol * 100 /9 );
420+ //AU_setmixer_one( gm.hAU, AU_MIXCHAN_MASTER, MIXER_SETMODE_ABSOLUTE, gvars.vol * 100/9 );
417421
418- AU_setrate ( hAU , freq , HW_CHANNELS , HW_BITS );
422+ AU_setrate ( gm . hAU , gm . freq , HW_CHANNELS , HW_BITS );
419423
420424 if ( gvars .rm ) {
421425 gvars .rm = PTRAP_Prepare_RM_PortTrap ();
@@ -437,15 +441,15 @@ int main(int argc, char* argv[])
437441 gvars .hdma = 0 ;
438442#endif
439443
440- VPIC_Init ( AU_getirq ( hAU ) );
444+ VPIC_Init ( AU_getirq ( gm . hAU ) );
441445
442446#ifdef NOFM
443447 gvars .opl3 = 0 ;
444448#endif
445449#if SB16
446- PTRAP_Prepare ( gvars .opl3 , gvars .base , gvars .dma , gvars .hdma , AU_getirq ( hAU ) );
450+ PTRAP_Prepare ( gvars .opl3 , gvars .base , gvars .dma , gvars .hdma , AU_getirq ( gm . hAU ) );
447451#else
448- PTRAP_Prepare ( gvars .opl3 , gvars .base , gvars .dma , 0 , AU_getirq ( hAU ) );
452+ PTRAP_Prepare ( gvars .opl3 , gvars .base , gvars .dma , 0 , AU_getirq ( gm . hAU ) );
449453#endif
450454#if SB16
451455 VSB_Init ( gvars .irq , gvars .dma , gvars .hdma , gvars .type );
@@ -459,20 +463,20 @@ int main(int argc, char* argv[])
459463#endif
460464
461465 if ( gvars .rm ) {
462- if ((bQemm = PTRAP_Install_RM_PortTraps ()) == 0 )
466+ if ((gm . bQemm = PTRAP_Install_RM_PortTraps ()) == 0 )
463467 printf ("Error: Failed installing IO port trap for real-mode.\n" );
464468 }
465469 if ( gvars .pm ) {
466- if (( bHdpmi = PTRAP_Install_PM_PortTraps ()) == 0 )
470+ if (( gm . bHdpmi = PTRAP_Install_PM_PortTraps ()) == 0 )
467471 printf ("Error: Failed installing IO port trap for protected-mode.\n" );
468472#ifdef _DEBUG
469473 //PTRAP_PrintPorts(); /* for debugging */
470474#endif
471475 }
472476#ifndef NOFM
473477 if ( gvars .opl3 ) {
474- VOPL3_Init ( AU_getfreq ( hAU ) );
475- printf ("OPL3 emulation enabled at port 388h (%u Hz).\n" , AU_getfreq ( hAU ) );
478+ VOPL3_Init ( AU_getfreq ( gm . hAU ) );
479+ printf ("OPL3 emulation enabled at port 388h (%u Hz).\n" , AU_getfreq ( gm . hAU ) );
476480 }
477481#endif
478482 printf ("SB emulation enabled at Addr=%x, Irq=%d, Dma=%d, " , gvars .base , gvars .irq , gvars .dma );
@@ -501,20 +505,20 @@ int main(int argc, char* argv[])
501505 if (p = malloc ( 0x10000 ) )
502506 free ( p );
503507
504- bISR = SNDISR_Init (PIC_IRQ2VEC ( AU_getirq ( hAU ) ) );
508+ gm . bISR = SNDISR_Init ( gm . hAU , gvars . vol * 256 / 9 ); /* vol: translate 0-9 to 0-256 */
505509
506- if ( bISR ) {
510+ if ( gm . bISR ) {
507511 VIRQ_Init ( gvars .irq );
508512 _InstallInt31 ();
509513 }
510514
511- PIC_UnmaskIRQ ( AU_getirq ( hAU ) );
515+ PIC_UnmaskIRQ ( AU_getirq ( gm . hAU ) );
512516
513- //AU_prestart( hAU );
514- AU_start ( hAU );
517+ //AU_prestart( gm. hAU );
518+ AU_start ( gm . hAU );
515519 if (bOMode & 1 ) bOMode = 2 ; /* switch to low-level i/o */
516520
517- if ( bISR && ( bQemm || (!gvars .rm ) ) && ( bHdpmi || (!gvars .pm ) ) ) {
521+ if ( gm . bISR && ( gm . bQemm || (!gvars .rm ) ) && ( gm . bHdpmi || (!gvars .pm ) ) ) {
518522 uint32_t psp ;
519523 __dpmi_regs r = {0 };
520524 __dpmi_set_coprocessor_emulation ( 0 );
@@ -539,7 +543,7 @@ int main(int argc, char* argv[])
539543 r .x .ax = 0x3100 ;
540544 __dpmi_simulate_real_mode_interrupt (0x21 , & r ); //won't return on success
541545 }
542- dbgprintf (("main: bISR=%u, bQemm=%u, bHdpmi=%u\n" , bISR , bQemm , bHdpmi ));
546+ dbgprintf (("main: bISR=%u, bQemm=%u, bHdpmi=%u\n" , gm . bISR , gm . bQemm , gm . bHdpmi ));
543547 ReleaseRes ();
544548 printf ("Error: Failed installing TSR.\n" );
545549 return 1 ;
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