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proc.c
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/****************************************************************************
*
* This code is Public Domain.
*
* ========================================================================
*
* Description: Processing of PROC/ENDP/LOCAL directives.
*
****************************************************************************/
#include <ctype.h>
#include "globals.h"
#include "memalloc.h"
#include "parser.h"
#include "segment.h"
#include "extern.h"
#include "equate.h"
#include "fixup.h"
#include "label.h"
#include "input.h"
#include "lqueue.h"
#include "tokenize.h"
#include "expreval.h"
#include "types.h"
#include "condasm.h"
#include "macro.h"
#include "proc.h"
#include "fastpass.h"
#include "listing.h"
#include "posndir.h"
#include "myassert.h"
#include "reswords.h"
#if AMD64_SUPPORT
#include "win64seh.h"
#endif
#ifdef __I86__
#define NUMQUAL (long)
#else
#define NUMQUAL
#endif
/* STACKPROBE: emit a conditional "call __chkstk" inside the prologue
* if stack space that is to be allocated exceeds 1000h bytes.
* this is currently implemented for 64-bit only,
* if OPTION FRAME:AUTO is set and the procedure has the FRAME attribute.
* it's not active by default because, in a few cases, the listing might get messed.
*/
#define STACKPROBE 0
extern const char szDgroup[];
extern uint_32 list_pos; /* current LST file position */
/*
* Masm allows nested procedures
* but they must NOT have params or locals
*/
/*
* calling convention FASTCALL supports:
* - Watcom C: registers e/ax,e/dx,e/bx,e/cx
* - MS fastcall 16-bit: registers ax,dx,bx (default for 16bit)
* - MS fastcall 32-bit: registers ecx,edx (default for 32bit)
* - Win64: registers rcx, rdx, r8, r9 (default for 64bit)
*/
struct dsym *CurrProc; /* current procedure */
int procidx; /* procedure index */
static struct proc_info *ProcStack;
/* v2.11: ProcStatus replaced DefineProc */
enum proc_status ProcStatus;
#if AMD64_SUPPORT
static bool endprolog_found;
static uint_8 unw_segs_defined;
static UNWIND_INFO unw_info;
/* v2.11: changed 128 -> 258; actually, 255 is the max # of unwind codes */
static UNWIND_CODE unw_code[258];
#endif
#if AMD64_SUPPORT
/* @ReservedStack symbol; used when option W64F_AUTOSTACKSP has been set */
struct asym *sym_ReservedStack; /* max stack space required by INVOKE */
#endif
/* tables for FASTCALL support */
/* v2.07: 16-bit MS FASTCALL registers are AX, DX, BX.
* And params on stack are in PASCAL order.
*/
//static const enum special_token ms32_regs16[] = { T_CX, T_DX };
static const enum special_token ms32_regs16[] = { T_AX, T_DX, T_BX };
static const enum special_token ms32_regs32[] = { T_ECX,T_EDX };
/* v2.07: added */
static const int ms32_maxreg[] = {
sizeof( ms32_regs16) / sizeof(ms32_regs16[0] ),
sizeof( ms32_regs32) / sizeof(ms32_regs32[0] ),
};
#if OWFC_SUPPORT
static const enum special_token watc_regs8[] = {T_AL, T_DL, T_BL, T_CL };
static const enum special_token watc_regs16[] = {T_AX, T_DX, T_BX, T_CX };
static const enum special_token watc_regs32[] = {T_EAX, T_EDX, T_EBX, T_ECX };
static const enum special_token watc_regs_qw[] = {T_AX, T_BX, T_CX, T_DX };
#endif
#if AMD64_SUPPORT
static const enum special_token ms64_regs[] = {T_RCX, T_RDX, T_R8, T_R9 };
/* win64 non-volatile GPRs:
* T_RBX, T_RBP, T_RSI, T_RDI, T_R12, T_R13, T_R14, T_R15
*/
static const uint_16 win64_nvgpr = 0xF0E8;
/* win64 non-volatile XMM regs: XMM6-XMM15 */
static const uint_16 win64_nvxmm = 0xFFC0;
#endif
struct fastcall_conv {
int (* paramcheck)( struct dsym *, struct dsym *, int * );
void (* handlereturn)( struct dsym *, char *buffer );
};
static int ms32_pcheck( struct dsym *, struct dsym *, int * );
static void ms32_return( struct dsym *, char * );
#if OWFC_SUPPORT
static int watc_pcheck( struct dsym *, struct dsym *, int * );
static void watc_return( struct dsym *, char * );
#endif
#if AMD64_SUPPORT
static int ms64_pcheck( struct dsym *, struct dsym *, int * );
static void ms64_return( struct dsym *, char * );
#endif
/* table of fastcall types.
* must match order of enum fastcall_type!
* also see table in mangle.c!
*/
static const struct fastcall_conv fastcall_tab[] = {
{ ms32_pcheck, ms32_return }, /* FCT_MSC */
#if OWFC_SUPPORT
{ watc_pcheck, watc_return }, /* FCT_WATCOMC */
#endif
#if AMD64_SUPPORT
{ ms64_pcheck, ms64_return } /* FCT_WIN64 */
#endif
};
const enum special_token stackreg[] = { T_SP, T_ESP,
#if AMD64_SUPPORT
T_RSP
#endif
};
#if STACKBASESUPP==0
const enum special_token basereg[] = {
T_BP, T_EBP,
#if AMD64_SUPPORT
T_RBP
#endif
};
#else
uint_32 StackAdj; /* value of @StackBase variable */
int_32 StackAdjHigh;
#endif
#if AMD64_SUPPORT
static const char * const fmtstk0[] = {
"sub %r, %d",
"%r %d",
#if STACKPROBE
"mov %r, %d",
#endif
};
static const char * const fmtstk1[] = {
"sub %r, %d + %s",
"%r %d + %s",
#if STACKPROBE
"mov %r, %d + %s",
#endif
};
#endif
#define ROUND_UP( i, r ) (((i)+((r)-1)) & ~((r)-1))
#if OWFC_SUPPORT
/* register usage for OW fastcall (register calling convention).
* registers are used for parameter size 1,2,4,8.
* if a parameter doesn't fit in a register, a register pair is used.
* however, valid register pairs are e/dx:e/ax and e/cx:e/bx only!
* if a parameter doesn't fit in a register pair, registers
* are used ax:bx:cx:dx!!!
* stack cleanup for OW fastcall: if the proc is VARARG, the caller
* will do the cleanup, else the called proc does it.
* in VARARG procs, all parameters are pushed onto the stack!
*/
static int watc_pcheck( struct dsym *proc, struct dsym *paranode, int *used )
/***************************************************************************/
{
static char regname[64];
static char regist[32];
int newflg;
int shift;
int firstreg;
uint_8 Ofssize = GetSymOfssize( &proc->sym );
int size = SizeFromMemtype( paranode->sym.mem_type, paranode->sym.Ofssize, paranode->sym.type );
/* v2.05: VARARG procs don't have register params */
if ( proc->e.procinfo->has_vararg )
return( 0 );
if ( size != 1 && size != 2 && size != 4 && size != 8 )
return( 0 );
/* v2.05: rewritten. The old code didn't allow to "fill holes" */
if ( size == 8 ) {
newflg = Ofssize ? 3 : 15;
shift = Ofssize ? 2 : 4;
} else if ( size == 4 && Ofssize == USE16 ) {
newflg = 3;
shift = 2;
} else {
newflg = 1;
shift = 1;
}
/* scan if there's a free register (pair/quadrupel) */
for ( firstreg = 0; firstreg < 4 && (newflg & *used ); newflg <<= shift, firstreg += shift );
if ( firstreg >= 4 ) /* exit if nothing is free */
return( 0 );
paranode->sym.state = SYM_TMACRO;
switch ( size ) {
case 1:
paranode->sym.regist[0] = watc_regs8[firstreg];
break;
case 2:
paranode->sym.regist[0] = watc_regs16[firstreg];
break;
case 4:
if ( Ofssize ) {
paranode->sym.regist[0] = watc_regs32[firstreg];
} else {
paranode->sym.regist[0] = watc_regs16[firstreg];
paranode->sym.regist[1] = watc_regs16[firstreg+1];
}
break;
case 8:
if ( Ofssize ) {
paranode->sym.regist[0] = watc_regs32[firstreg];
paranode->sym.regist[1] = watc_regs32[firstreg+1];
} else {
/* the AX:BX:CX:DX sequence is for 16-bit only.
* fixme: no support for codeview debug info yet;
* the S_REGISTER record supports max 2 registers only.
*/
for( firstreg = 0, regname[0] = NULLC; firstreg < 4; firstreg++ ) {
GetResWName( watc_regs_qw[firstreg], regname + strlen( regname ) );
if ( firstreg != 3 )
strcat( regname, "::");
}
}
}
if ( paranode->sym.regist[1] ) {
sprintf( regname, "%s::%s",
GetResWName( paranode->sym.regist[1], regist ),
GetResWName( paranode->sym.regist[0], NULL ) );
} else if ( paranode->sym.regist[0] ) {
GetResWName( paranode->sym.regist[0], regname );
}
*used |= newflg;
paranode->sym.string_ptr = LclAlloc( strlen( regname ) + 1 );
strcpy( paranode->sym.string_ptr, regname );
DebugMsg(("watc_pcheck(%s.%s): size=%u ptr=%u far=%u reg=%s\n", proc->sym.name, paranode->sym.name, size, paranode->sym.is_ptr, paranode->sym.isfar, regname ));
return( 1 );
}
static void watc_return( struct dsym *proc, char *buffer )
/********************************************************/
{
int value;
value = 4 * CurrWordSize;
if( proc->e.procinfo->has_vararg == FALSE && proc->e.procinfo->parasize > value )
sprintf( buffer + strlen( buffer ), "%d%c", proc->e.procinfo->parasize - value, ModuleInfo.radix != 10 ? 't' : NULLC );
return;
}
#endif
/* the MS Win32 fastcall ABI is simple: register ecx and edx are used,
* if the parameter's value fits into the register.
* there is no space reserved on the stack for a register backup.
* The 16-bit ABI uses registers AX, DX and BX - additional registers
* are pushed in PASCAL order (i.o.w.: left to right).
*/
static int ms32_pcheck( struct dsym *proc, struct dsym *paranode, int *used )
/***************************************************************************/
{
char regname[32];
int size = SizeFromMemtype( paranode->sym.mem_type, paranode->sym.Ofssize, paranode->sym.type );
/* v2.07: 16-bit has 3 register params (AX,DX,BX) */
//if ( size > CurrWordSize || *used >= 2 )
if ( size > CurrWordSize || *used >= ms32_maxreg[ModuleInfo.Ofssize] )
return( 0 );
paranode->sym.state = SYM_TMACRO;
/* v2.10: for codeview debug info, store the register index in the symbol */
paranode->sym.regist[0] = ModuleInfo.Ofssize ? ms32_regs32[*used] : ms32_regs16[*used];
GetResWName( ModuleInfo.Ofssize ? ms32_regs32[*used] : ms32_regs16[*used], regname );
paranode->sym.string_ptr = LclAlloc( strlen( regname ) + 1 );
strcpy( paranode->sym.string_ptr, regname );
(*used)++;
return( 1 );
}
static void ms32_return( struct dsym *proc, char *buffer )
/********************************************************/
{
/* v2.07: changed */
//if( proc->e.procinfo->parasize > ( 2 * CurrWordSize ) )
// sprintf( buffer + strlen( buffer ), "%d%c", proc->e.procinfo->parasize - (2 * CurrWordSize), ModuleInfo.radix != 10 ? 't' : NULLC );
if( proc->e.procinfo->parasize > ( ms32_maxreg[ModuleInfo.Ofssize] * CurrWordSize ) )
sprintf( buffer + strlen( buffer ), "%d%c", proc->e.procinfo->parasize - ( ms32_maxreg[ModuleInfo.Ofssize] * CurrWordSize), ModuleInfo.radix != 10 ? 't' : NULLC );
return;
}
#if AMD64_SUPPORT
/* the MS Win64 fastcall ABI is strict: the first four parameters are
* passed in registers. If a parameter's value doesn't fit in a register,
* it's address is used instead. parameter 1 is stored in rcx/xmm0,
* then comes rdx/xmm1, r8/xmm2, r9/xmm3. The xmm regs are used if the
* param is a float/double (but not long double!).
* Additionally, there's space for the registers reserved by the caller on,
* the stack. On a function's entry it's located at [esp+8] for param 1,
* [esp+16] for param 2,... The parameter names refer to those stack
* locations, not to the register names.
*/
static int ms64_pcheck( struct dsym *proc, struct dsym *paranode, int *used )
/***************************************************************************/
{
/* since the parameter names refer the stack-backup locations,
* there's nothing to do here!
* That is, if a parameter's size is > 8, it has to be changed
* to a pointer. This is to be done yet.
*/
return( 0 );
}
static void ms64_return( struct dsym *proc, char *buffer )
/********************************************************/
{
/* nothing to do, the caller cleans the stack */
return;
}
#endif
static void pushitem( void *stk, void *elmt )
/*******************************************/
{
void **stack = stk;
struct qnode *node;
node = LclAlloc( sizeof( struct qnode ));
node->next = *stack;
node->elmt = elmt;
*stack = node;
}
static void *popitem( void *stk )
/*******************************/
{
void **stack = stk;
struct qnode *node;
void *elmt;
node = (struct qnode *)(*stack);
*stack = node->next;
elmt = (void *)node->elmt;
LclFree( node );
return( elmt );
}
#if 0
void *peekitem( void *stk, int level )
/************************************/
{
struct qnode *node = (struct qnode *)stk;
for ( ; node && level; level-- ) {
node = node->next;
}
if ( node )
return( node->elt );
else
return( NULL );
}
#endif
static void push_proc( struct dsym *proc )
/****************************************/
{
if ( Parse_Pass == PASS_1 ) /* get the locals stored so far */
SymGetLocal( (struct asym *)proc );
pushitem( &ProcStack, proc );
return;
}
static struct dsym *pop_proc( void )
/**********************************/
{
if( ProcStack == NULL )
return( NULL );
return( (struct dsym *)popitem( &ProcStack ) );
}
/*
* LOCAL directive. Syntax:
* LOCAL symbol[,symbol]...
* symbol:name [[count]] [:[type]]
* count: number of array elements, default is 1
* type: qualified type [simple type, structured type, ptr to simple/structured type]
*/
ret_code LocalDir( int i, struct asm_tok tokenarray[] )
/*****************************************************/
{
char *name;
struct dsym *local;
struct dsym *curr;
struct proc_info *info;
//int size;
//int idx;
struct qualified_type ti;
if ( Parse_Pass != PASS_1 ) /* everything is done in pass 1 */
return( NOT_ERROR );
DebugMsg1(("LocalDir(%u) entry\n", i));
if( !( ProcStatus & PRST_PROLOGUE_NOT_DONE ) || CurrProc == NULL ) {
return( EmitError( PROC_MACRO_MUST_PRECEDE_LOCAL ) );
}
info = CurrProc->e.procinfo;
#if STACKBASESUPP
/* ensure the fpo bit is set - it's too late to set it in write_prologue().
* Note that the fpo bit is set only IF there are locals or arguments.
* fixme: what if pass > 1?
*/
if ( GetRegNo( info->basereg ) == 4 ) {
info->fpo = TRUE;
ProcStatus |= PRST_FPO;
}
#endif
i++; /* go past LOCAL */
do {
if( tokenarray[i].token != T_ID ) {
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr ) );
}
name = tokenarray[i].string_ptr;
DebugMsg1(("LocalDir: item=%s\n", tokenarray[i].tokpos ));
ti.symtype = NULL;
ti.is_ptr = 0;
ti.ptr_memtype = MT_EMPTY;
if ( SIZE_DATAPTR & ( 1 << ModuleInfo.model ) )
ti.is_far = TRUE;
else
ti.is_far = FALSE;
ti.Ofssize = ModuleInfo.Ofssize;
#if 0
/* since v1.95 a local hash table is used. No need to search the
* symbol before SymLCreate() is called. SymLCreate() will display
* an error if the symbol is already defined.
*/
if ((local = (struct dsym *)SymSearch( name )) && local->sym.state != SYM_UNDEFINED ) {
return( EmitErr( SYMBOL_ALREADY_DEFINED, name ) );
}
#endif
local = (struct dsym *)SymLCreate( name );
if( !local ) { /* if it failed, an error msg has been written already */
DebugMsg(("LocalDir: SymLCreate( %s ) failed\n", name ));
return( ERROR );
}
local->sym.state = SYM_STACK;
local->sym.isdefined = TRUE;
local->sym.total_length = 1; /* v2.04: added */
switch ( ti.Ofssize ) {
case USE16:
local->sym.mem_type = MT_WORD;
ti.size = sizeof( uint_16 );
break;
#if AMD64_SUPPORT
/* v2.08: default type for locals in 64-bit is still DWORD (at least in Win64) */
//case USE64: local->sym.mem_type = MT_QWORD; break;
//ti.size = sizeof( uint_64 );
#endif
default:
local->sym.mem_type = MT_DWORD;
ti.size = sizeof( uint_32 );
break;
}
i++; /* go past name */
/* get the optional index factor: local name[xx]:... */
if( tokenarray[i].token == T_OP_SQ_BRACKET ) {
int j;
struct expr opndx;
i++; /* go past '[' */
/* scan for comma or colon. this isn't really necessary,
* but will prevent the expression evaluator from emitting
* confusing error messages.
*/
for ( j = i; j < Token_Count; j++ )
if ( tokenarray[j].token == T_COMMA ||
tokenarray[j].token == T_COLON)
break;
if ( ERROR == EvalOperand( &i, tokenarray, j, &opndx, 0 ) )
return( ERROR );
if ( opndx.kind != EXPR_CONST ) {
EmitError( CONSTANT_EXPECTED );
opndx.value = 1;
}
/* zero is allowed as value! */
local->sym.total_length = opndx.value;
local->sym.isarray = TRUE;
if( tokenarray[i].token == T_CL_SQ_BRACKET ) {
i++; /* go past ']' */
} else {
EmitError( EXPECTED_CL_SQ_BRACKET );
}
}
/* get the optional type: local name[xx]:type */
if( tokenarray[i].token == T_COLON ) {
i++;
if ( GetQualifiedType( &i, tokenarray, &ti ) == ERROR )
return( ERROR );
local->sym.mem_type = ti.mem_type;
if ( ti.mem_type == MT_TYPE ) {
local->sym.type = ti.symtype;
} else {
local->sym.target_type = ti.symtype;
}
DebugMsg1(("LocalDir: memtype=%X, type=%s, size=%u*%u\n",
local->sym.mem_type,
ti.symtype ? ti.symtype->name : "NULL",
ti.size, local->sym.total_length ));
}
local->sym.is_ptr = ti.is_ptr;
local->sym.isfar = ti.is_far;
local->sym.Ofssize = ti.Ofssize;
local->sym.ptr_memtype = ti.ptr_memtype;
local->sym.total_size = ti.size * local->sym.total_length;
/* v2.12: address calculation is now done in SetLocalOffsets() */
if( info->locallist == NULL ) {
info->locallist = local;
} else {
for( curr = info->locallist; curr->nextlocal ; curr = curr->nextlocal );
curr->nextlocal = local;
}
if ( tokenarray[i].token != T_FINAL )
if ( tokenarray[i].token == T_COMMA ) {
if ( (i + 1) < Token_Count )
i++;
} else {
return( EmitErr( EXPECTING_COMMA, tokenarray[i].tokpos ) );
}
} while ( i < Token_Count );
return( NOT_ERROR );
}
#if STACKBASESUPP
/* read/write value of @StackBase variable */
void UpdateStackBase( struct asym *sym, struct expr *opnd )
/*********************************************************/
{
if ( opnd ) {
StackAdj = opnd->uvalue;
StackAdjHigh = opnd->hvalue;
}
sym->value = StackAdj;
sym->value3264 = StackAdjHigh;
}
/* read value of @ProcStatus variable */
void UpdateProcStatus( struct asym *sym, struct expr *opnd )
/**********************************************************/
{
sym->value = ( CurrProc ? ProcStatus : 0 );
}
#endif
/* parse parameters of a PROC/PROTO.
* Called in pass one only.
* i=start parameters
*/
static ret_code ParseParams( struct dsym *proc, int i, struct asm_tok tokenarray[], bool IsPROC )
/***********************************************************************************************/
{
char *name;
struct asym *sym;
int cntParam;
int offset;
//int size;
int fcint = 0;
struct qualified_type ti;
bool is_vararg;
bool init_done;
struct dsym *paranode;
struct dsym *paracurr;
int curr;
/*
* find "first" parameter ( that is, the first to be pushed in INVOKE ).
*/
if (proc->sym.langtype == LANG_C ||
proc->sym.langtype == LANG_SYSCALL ||
#if AMD64_SUPPORT
( proc->sym.langtype == LANG_FASTCALL && ModuleInfo.Ofssize != USE64 ) ||
#else
proc->sym.langtype == LANG_FASTCALL ||
#endif
proc->sym.langtype == LANG_STDCALL)
for ( paracurr = proc->e.procinfo->paralist; paracurr && paracurr->nextparam; paracurr = paracurr->nextparam );
else
paracurr = proc->e.procinfo->paralist;
/* v2.11: proc_info.init_done has been removed, sym.isproc flag is used instead */
init_done = proc->sym.isproc;
for( cntParam = 0 ; tokenarray[i].token != T_FINAL ; cntParam++ ) {
if ( tokenarray[i].token == T_ID ) {
name = tokenarray[i++].string_ptr;
} else if ( IsPROC == FALSE && tokenarray[i].token == T_COLON ) {
if ( paracurr )
name = paracurr->sym.name;
else
name = "";
} else {
/* PROC needs a parameter name, PROTO accepts <void> also */
DebugMsg(("ParseParams: name missing/invalid for parameter %u, i=%u\n", cntParam+1, i));
return( EmitErr( SYNTAX_ERROR_EX, tokenarray[i].string_ptr ) );
}
ti.symtype = NULL;
ti.is_ptr = 0;
ti.ptr_memtype = MT_EMPTY;
/* v2.02: init is_far depending on memory model */
//ti.is_far = FALSE;
if ( SIZE_DATAPTR & ( 1 << ModuleInfo.model ) )
ti.is_far = TRUE;
else
ti.is_far = FALSE;
ti.Ofssize = ModuleInfo.Ofssize;
ti.size = CurrWordSize;
is_vararg = FALSE;
/* read colon. It's optional for PROC.
* Masm also allows a missing colon for PROTO - if there's
* just one parameter. Probably a Masm bug.
* JWasm always require a colon for PROTO.
*/
if( tokenarray[i].token != T_COLON ) {
if ( IsPROC == FALSE ) {
return( EmitError( COLON_EXPECTED ) );
}
switch ( ti.Ofssize ) {
case USE16:
ti.mem_type = MT_WORD; break;
#if AMD64_SUPPORT
/* v2.08: default size for arguments is DWORD in 64-bit ( Win64 ) */
//case USE64: ti.mem_type = MT_QWORD; break;
#endif
default:
ti.mem_type = MT_DWORD; break;
}
} else {
i++;
if (( tokenarray[i].token == T_RES_ID ) && ( tokenarray[i].tokval == T_VARARG )) {
switch( proc->sym.langtype ) {
case LANG_NONE:
case LANG_BASIC:
case LANG_FORTRAN:
case LANG_PASCAL:
case LANG_STDCALL:
return( EmitError( VARARG_REQUIRES_C_CALLING_CONVENTION ) );
}
/* v2.05: added check */
if ( tokenarray[i+1].token != T_FINAL )
EmitError( VARARG_PARAMETER_MUST_BE_LAST );
else
is_vararg = TRUE;
ti.mem_type = MT_EMPTY;
ti.size = 0;
i++;
} else {
if ( GetQualifiedType( &i, tokenarray, &ti ) == ERROR )
return( ERROR );
}
}
/* check if parameter name is defined already */
if (( IsPROC ) && ( sym = SymSearch( name ) ) && sym->state != SYM_UNDEFINED ) {
DebugMsg(("ParseParams: %s defined already, state=%u, local=%u\n", sym->name, sym->state, sym->scoped ));
return( EmitErr( SYMBOL_REDEFINITION, name ) );
}
/* redefinition? */
if ( paracurr ) {
#if 0 /* was active till v2.04 */
int newsize = ti.size;
int oldsize;
/* check size only (so UINT <-> DWORD wont cause an error) */
if ( paracurr->sym.type )
oldsize = paracurr->sym.total_size;
else if ( paracurr->sym.mem_type == MT_EMPTY )
oldsize = 0;
else if ( paracurr->sym.mem_type == MT_PTR )
oldsize = SizeFromMemtype( paracurr->sym.isfar ? MT_FAR : MT_NEAR, paracurr->sym.Ofssize, NULL );
else
oldsize = SizeFromMemtype( paracurr->sym.mem_type, paracurr->sym.Ofssize, paracurr->sym.type );
if ( oldsize != newsize ) {
DebugMsg(("ParseParams: old memtype=%u, new memtype=%u\n", paracurr->sym.mem_type, ti.mem_type));
EmitErr( CONFLICTING_PARAMETER_DEFINITION, name );
//return( ERROR );
}
/* the parameter type used in PROC has highest priority! */
if ( IsPROC ) {
if ( ti.symtype ) {
paracurr->sym.type = ti.symtype;
paracurr->sym.mem_type = MT_TYPE;
} else
paracurr->sym.mem_type = ti.mem_type;
}
#else
struct asym *to;
struct asym *tn;
char oo;
char on;
for( tn = ti.symtype; tn && tn->type; tn = tn->type );
/* v2.12: don't assume pointer type if mem_type is != MT_TYPE!
* regression test proc9.asm.
*/
//to = ( paracurr->sym.mem_type == MT_TYPE ) ? paracurr->sym.type : paracurr->sym.target_type;
if ( paracurr->sym.mem_type == MT_TYPE )
to = paracurr->sym.type;
else
to = ( paracurr->sym.mem_type == MT_PTR ? paracurr->sym.target_type : NULL );
for( ; to && to->type; to = to->type );
oo = ( paracurr->sym.Ofssize != USE_EMPTY ) ? paracurr->sym.Ofssize : ModuleInfo.Ofssize;
on = ( ti.Ofssize != USE_EMPTY ) ? ti.Ofssize : ModuleInfo.Ofssize;
if ( ti.mem_type != paracurr->sym.mem_type ||
( ti.mem_type == MT_TYPE && tn != to ) ||
( ti.mem_type == MT_PTR &&
( ti.is_far != paracurr->sym.isfar ||
on != oo ||
ti.ptr_memtype != paracurr->sym.ptr_memtype ||
tn != to ))) {
DebugMsg(("ParseParams: old-new memtype=%X-%X type=%X(%s)-%X(%s) far=%u-%u ind=%u-%u ofss=%d-%d pmt=%X-%X\n",
paracurr->sym.mem_type, ti.mem_type,
(paracurr->sym.mem_type == MT_TYPE) ? paracurr->sym.type : paracurr->sym.target_type,
(paracurr->sym.mem_type == MT_TYPE) ? paracurr->sym.type->name : paracurr->sym.target_type ? paracurr->sym.target_type->name : "",
ti.symtype, ti.symtype ? ti.symtype->name : "",
paracurr->sym.isfar, ti.is_far,
paracurr->sym.is_ptr, ti.is_ptr,
paracurr->sym.Ofssize, ti.Ofssize,
paracurr->sym.ptr_memtype, ti.ptr_memtype ));
EmitErr( CONFLICTING_PARAMETER_DEFINITION, name );
//return( ERROR );
}
#endif
if ( IsPROC ) {
DebugMsg1(("ParseParams: calling SymAddLocal(%s, %s)\n", paracurr->sym.name, name ));
/* it has been checked already that the name isn't found - SymAddLocal() shouldn't fail */
SymAddLocal( ¶curr->sym, name );
}
/* set paracurr to next parameter */
if ( proc->sym.langtype == LANG_C ||
proc->sym.langtype == LANG_SYSCALL ||
#if AMD64_SUPPORT
( proc->sym.langtype == LANG_FASTCALL && ti.Ofssize != USE64 ) ||
#else
proc->sym.langtype == LANG_FASTCALL ||
#endif
proc->sym.langtype == LANG_STDCALL) {
struct dsym *l;
for (l = proc->e.procinfo->paralist;
l && ( l->nextparam != paracurr );
l = l->nextparam );
paracurr = l;
} else
paracurr = paracurr->nextparam;
//} else if ( proc->e.procinfo->init_done == TRUE ) {
} else if ( init_done == TRUE ) {
/* second definition has more parameters than first */
DebugMsg(("ParseParams: different param count\n"));
return( EmitErr( CONFLICTING_PARAMETER_DEFINITION, "" ) );
} else {
if ( IsPROC ) {
paranode = (struct dsym *)SymLCreate( name );
} else
paranode = (struct dsym *)SymAlloc( "" );/* for PROTO, no param name needed */
if( paranode == NULL ) { /* error msg has been displayed already */
DebugMsg(("ParseParams: SymLCreate(%s) failed\n", name ));
return( ERROR );
}
paranode->sym.isdefined = TRUE;
paranode->sym.mem_type = ti.mem_type;
if ( ti.mem_type == MT_TYPE ) {
paranode->sym.type = ti.symtype;
} else {
paranode->sym.target_type = ti.symtype;
}
/* v2.05: moved BEFORE fastcall_tab() */
paranode->sym.isfar = ti.is_far;
paranode->sym.Ofssize = ti.Ofssize;
paranode->sym.is_ptr = ti.is_ptr;
paranode->sym.ptr_memtype = ti.ptr_memtype;
paranode->sym.is_vararg = is_vararg;
if ( proc->sym.langtype == LANG_FASTCALL &&
fastcall_tab[ModuleInfo.fctype].paramcheck( proc, paranode, &fcint ) ) {
} else {
paranode->sym.state = SYM_STACK;
}
paranode->sym.total_length = 1; /* v2.04: added */
paranode->sym.total_size = ti.size;
if( paranode->sym.is_vararg == FALSE )
/* v2.11: CurrWordSize does reflect the default parameter size only for PROCs.
* For PROTOs and TYPEs use member seg_ofssize.
*/
//proc->e.procinfo->parasize += ROUND_UP( ti.size, CurrWordSize );
proc->e.procinfo->parasize += ROUND_UP( ti.size, IsPROC ? CurrWordSize : ( 2 << proc->sym.seg_ofssize ) );
/* v2.05: the PROC's vararg flag has been set already */
//proc->e.procinfo->is_vararg |= paranode->sym.is_vararg;
/* Parameters usually are stored in "push" order.
* However, for Win64, it's better to store them
* the "natural" way from left to right, since the
* arguments aren't "pushed".
*/
switch( proc->sym.langtype ) {
case LANG_BASIC:
case LANG_FORTRAN:
case LANG_PASCAL:
left_to_right:
paranode->nextparam = NULL;
if( proc->e.procinfo->paralist == NULL ) {
proc->e.procinfo->paralist = paranode;
} else {
for( paracurr = proc->e.procinfo->paralist;; paracurr = paracurr->nextparam ) {
if( paracurr->nextparam == NULL ) {
break;
}
}
paracurr->nextparam = paranode;
paracurr = NULL;
}
break;
case LANG_FASTCALL:
#if AMD64_SUPPORT
if ( ti.Ofssize == USE64 )
goto left_to_right;
#endif
/* v2.07: MS fastcall 16-bit is PASCAL! */
if ( ti.Ofssize == USE16 && ModuleInfo.fctype == FCT_MSC )
goto left_to_right;
default:
paranode->nextparam = proc->e.procinfo->paralist;
proc->e.procinfo->paralist = paranode;
break;
}
}
if ( tokenarray[i].token != T_FINAL ) {
if( tokenarray[i].token != T_COMMA ) {
DebugMsg(("ParseParams: error, cntParam=%u, found %s\n", cntParam, tokenarray[i].tokpos ));
return( EmitErr( EXPECTING_COMMA, tokenarray[i].tokpos ) );
}
i++; /* go past comma */
}
} /* end for */
//if ( proc->e.procinfo->init_done == TRUE ) {
if ( init_done == TRUE ) {
if ( paracurr ) {
/* first definition has more parameters than second */
DebugMsg(("ParseParams: a param is left over, cntParam=%u\n", cntParam));
return( EmitErr( CONFLICTING_PARAMETER_DEFINITION, "" ) );
}
}
if ( IsPROC ) {
/* calc starting offset for parameters,
* offset from [E|R]BP : return addr + old [E|R]BP
* NEAR: 2 * wordsize, FAR: 3 * wordsize
* NEAR FAR
*-------------------------
* USE16 +4 +6
* USE32 +8 +12
* USE64 +16 +24
* without frame pointer:
* USE16 +2 +4
* USE32 +4 +8
* USE64 +8 +16
*/
offset = ( ( 2 + ( proc->sym.mem_type == MT_FAR ? 1 : 0 ) ) * CurrWordSize );
/* now calculate the [E|R]BP offsets */
#if AMD64_SUPPORT
if ( ModuleInfo.Ofssize == USE64 && proc->sym.langtype == LANG_FASTCALL ) {
for ( paranode = proc->e.procinfo->paralist; paranode ;paranode = paranode->nextparam )
if ( paranode->sym.state == SYM_TMACRO ) /* register param */
;
else {
paranode->sym.offset = offset;
proc->e.procinfo->stackparam = TRUE;
offset += ROUND_UP( paranode->sym.total_size, CurrWordSize );
}
} else
#endif
for ( ; cntParam; cntParam-- ) {
for ( curr = 1, paranode = proc->e.procinfo->paralist; curr < cntParam;paranode = paranode->nextparam, curr++ );
DebugMsg1(("ParseParams: parm=%s, ofs=%u, size=%d\n", paranode->sym.name, offset, paranode->sym.total_size));
if ( paranode->sym.state == SYM_TMACRO ) /* register param? */
;
else {
paranode->sym.offset = offset;
proc->e.procinfo->stackparam = TRUE;
offset += ROUND_UP( paranode->sym.total_size, CurrWordSize );
}
}
}
return ( NOT_ERROR );
}
/*
* parse a function prototype - called in pass 1 only.
* the syntax is used by:
* - PROC directive: <name> PROC ...
* - PROTO directive: <name> PROTO ...
* - EXTERN[DEF] directive: EXTERN[DEF] <name>: PROTO ...
* - TYPEDEF directive: <name> TYPEDEF PROTO ...
*
* i = start index of attributes
* IsPROC: TRUE for PROCs, FALSE for everything else
*
* strategy to set default value for "offset size" (16/32):
* 1. if current model is FLAT, use 32, else
* 2. use the current segment's attribute
* 3. if no segment is set, use cpu setting
*/
ret_code ParseProc( struct dsym *proc, int i, struct asm_tok tokenarray[], bool IsPROC, enum lang_type langtype )
/***************************************************************************************************************/
{
char *token;
uint_16 *regist;
//int type;
//enum lang_type langtype;
enum memtype newmemtype;
uint_8 newofssize;
uint_8 oldofssize;
#if FASTPASS
bool oldpublic = proc->sym.ispublic;
#endif
/* set some default values */