Beispiel #1
0
local int GetByteSeq( byte_seq **code )
/*************************************/
{
    unsigned char       buff[MAXIMUM_BYTESEQ + 32];
    char                *name;
    unsigned long       offset;
    fix_words           fixword;
    int                 uses_auto;
    char                too_many_bytes;
#if _CPU == 8086
    bool                use_fpu_emu = FALSE;
#endif

    AsmSysInit( buff );
    CompFlags.pre_processing = 1;       /* enable macros */
    NextToken();
    too_many_bytes = 0;
    uses_auto = 0;
    offset = 0;
    name = NULL;
    for( ;; ) {
        if( CurToken == T_STRING ) {    /* 06-sep-91 */
#if _CPU == 8086
            AsmLine( Buffer, GET_FPU_EMU( ProcRevision ) );
            use_fpu_emu = FALSE;
#else
            AsmLine( Buffer, FALSE );
#endif
            NextToken();
            if( CurToken == T_COMMA ) {
                NextToken();
            }
        } else if( CurToken == T_CONSTANT ) {
#if _CPU == 8086
            if( use_fpu_emu ) {
                AddAFix( AsmCodeAddress, NULL, FIX_SEG, 0 );
                use_fpu_emu = FALSE;
            }
#endif
            AsmCodeBuffer[AsmCodeAddress++] = Constant;
            NextToken();
        } else {
#if _CPU == 8086
            use_fpu_emu = FALSE;
#endif
            fixword = FixupKeyword();
            if( fixword == FIXWORD_NONE )
                break;
            if( fixword == FIXWORD_FLOAT ) {
#if _CPU == 8086
                if( GET_FPU_EMU( ProcRevision ) ) {
                    use_fpu_emu = TRUE;
                }
#endif
            } else { /* seg or offset */
                if( CurToken != T_ID ) {
                    CErr1( ERR_EXPECTING_ID );
                } else {
                    name = CStrSave( Buffer );
                    NextToken();
                    if( CurToken == T_PLUS ) {
                        NextToken();
                        if( CurToken == T_CONSTANT ) {
                            offset = Constant;
                            NextToken();
                        }
                    } else if( CurToken == T_MINUS ) {
                        NextToken();
                        if( CurToken == T_CONSTANT ) {
                            offset = -Constant;
                            NextToken();
                        }
                    }
                }
                switch( fixword ) {
                case FIXWORD_RELOFF:
#if _CPU == 8086
                    AddAFix( AsmCodeAddress, name, FIX_RELOFF16, offset );
                    AsmCodeAddress += 2;
#else
                    AddAFix( AsmCodeAddress, name, FIX_RELOFF32, offset );
                    AsmCodeAddress += 4;
#endif
                    break;
                case FIXWORD_OFFSET:
#if _CPU == 8086
                    AddAFix( AsmCodeAddress, name, FIX_OFF16, offset );
                    AsmCodeAddress += 2;
#else
                    AddAFix( AsmCodeAddress, name, FIX_OFF32, offset );
                    AsmCodeAddress += 4;
#endif
                    break;
                case FIXWORD_SEGMENT:
                    AddAFix( AsmCodeAddress, name, FIX_SEG, 0 );
                    AsmCodeAddress += 2;
                    break;
                }
            }
        }
        if( AsmCodeAddress > MAXIMUM_BYTESEQ ) {
            if( ! too_many_bytes ) {
                CErr1( ERR_TOO_MANY_BYTES_IN_PRAGMA );
                too_many_bytes = 1;
            }
            AsmCodeAddress = 0;          // reset index to we don't overrun buffer
        }
    }
    if( too_many_bytes ) {
        FreeAsmFixups();
        uses_auto = 0;
    } else {
        uses_auto = InsertFixups( buff, AsmCodeAddress, code );
    }
    CompFlags.pre_processing = 2;
    AsmSysFini();
    return( uses_auto );
}
Beispiel #2
0
static int GetByteSeq( void )
{
    int             len;
    char            *name;
    unsigned        offset;
    unsigned        fixword;
    int             uses_auto;
    VBUF            code_buffer;
#if _CPU == 8086
    bool            use_fpu_emu = FALSE;
#endif

    VbufInit( &code_buffer );
    AsmSysInit();
    PPCTL_ENABLE_MACROS();
    NextToken();
    len = 0;
    offset = 0;
    name = NULL;
    for( ;; ) {
        /* reserve at least ASM_BLOCK bytes in the buffer */
        VbufReqd( &code_buffer, _RoundUp( len + ASM_BLOCK, ASM_BLOCK ) );
        if( CurToken == T_STRING ) {
            AsmCodeAddress = len;
            AsmCodeBuffer = VbufBuffer( &code_buffer );
#if _CPU == 8086
            AsmLine( Buffer, use_fpu_emu );
            use_fpu_emu = FALSE;
#else
            AsmLine( Buffer, FALSE );
#endif
            len = AsmCodeAddress;
            NextToken();
            if( CurToken == T_COMMA ) {
                NextToken();
            }
        } else if( CurToken == T_CONSTANT ) {
#if _CPU == 8086
            if( use_fpu_emu ) {
                AddAFix( len, NULL, FIX_SEG, 0 );
                use_fpu_emu = FALSE;
            }
#endif
            VbufBuffer( &code_buffer )[ len++ ] = U32Fetch( Constant64 );
            NextToken();
        } else {
#if _CPU == 8086
            use_fpu_emu = FALSE;
#endif
            fixword = FixupKeyword();
            if( fixword == FIXWORD_NONE )
                break;
            if( fixword == FIXWORD_FLOAT ) {
#if _CPU == 8086
                if( GET_FPU_EMU( CpuSwitches ) ) {
                    use_fpu_emu = TRUE;
                }
#endif
            } else { /* seg or offset */
                if( !IS_ID_OR_KEYWORD( CurToken ) ) {
                    CErr1( ERR_EXPECTING_ID );
                } else {
                    name = strsave( Buffer );
                    offset = 0;
                    NextToken();
                    if( CurToken == T_PLUS ) {
                        NextToken();
                        if( CurToken == T_CONSTANT ) {
                            offset = U32Fetch( Constant64 );
                            NextToken();
                        }
                    } else if( CurToken == T_MINUS ) {
                        NextToken();
                        if( CurToken == T_CONSTANT ) {
                            offset = - U32Fetch( Constant64 );
                            NextToken();
                        }
                    }
                }
                switch( fixword ) {
                case FIXWORD_RELOFF:
#if _CPU == 8086
                    AddAFix( len, name, FIX_RELOFF16, offset );
                    len += 2;
#else
                    AddAFix( len, name, FIX_RELOFF32, offset );
                    len += 4;
#endif
                    break;
                case FIXWORD_OFFSET:
#if _CPU == 8086
                    AddAFix( len, name, FIX_OFF16, offset );
                    len += 2;
#else
                    AddAFix( len, name, FIX_OFF32, offset );
                    len += 4;
#endif
                    break;
                case FIXWORD_SEGMENT:
                    AddAFix( len, name, FIX_SEG, 0 );
                    len += 2;
                    break;
                }
            }
        }
        VbufSetLen( &code_buffer, len );
    }
    PPCTL_DISABLE_MACROS();
    uses_auto = AsmSysInsertFixups( &code_buffer );
    AsmSysFini();
    VbufFree( &code_buffer );
    return( uses_auto );
}
Beispiel #3
0
static bool GetByteSeq( byte_seq **code )
/**************************************/
{
    unsigned char       buff[MAXIMUM_BYTESEQ + 32];
    char                *name;
    unsigned            offset;
    fix_words           fixword;
    bool                uses_auto;
    bool                too_many_bytes;
#if _CPU == 8086
    bool                use_fpu_emu = false;
#endif

    AsmSysInit( buff );
    PPCTL_ENABLE_MACROS();
    NextToken();
    too_many_bytes = false;
    uses_auto = false;
    offset = 0;
    name = NULL;
    for( ;; ) {
        if( CurToken == T_STRING ) {
#if _CPU == 8086
            AsmLine( Buffer, use_fpu_emu );
            use_fpu_emu = false;
#else
            AsmLine( Buffer, false );
#endif
            NextToken();
            if( CurToken == T_COMMA ) {
                NextToken();
            }
        } else if( CurToken == T_CONSTANT ) {
#if _CPU == 8086
            if( use_fpu_emu ) {
                AddAFix( AsmCodeAddress, NULL, FIX_SEG, 0 );
                use_fpu_emu = false;
            }
#endif
            AsmCodeBuffer[AsmCodeAddress++] = (unsigned char)Constant;
            NextToken();
        } else {
#if _CPU == 8086
            use_fpu_emu = false;
#endif
            fixword = FixupKeyword();
            if( fixword == FIXWORD_NONE )
                break;
            if( fixword == FIXWORD_FLOAT ) {
#if _CPU == 8086
                if( GET_FPU_EMU( ProcRevision ) ) {
                    use_fpu_emu = true;
                }
#endif
            } else { /* seg or offset */
                if( !IS_ID_OR_KEYWORD( CurToken ) ) {
                    CErr1( ERR_EXPECTING_ID );
                } else {
                    name = CStrSave( Buffer );
                    NextToken();
                    if( CurToken == T_PLUS ) {
                        NextToken();
                        if( CurToken == T_CONSTANT ) {
                            offset = Constant;
                            NextToken();
                        }
                    } else if( CurToken == T_MINUS ) {
                        NextToken();
                        if( CurToken == T_CONSTANT ) {
                            offset = -(int)Constant;
                            NextToken();
                        }
                    }
                }
                switch( fixword ) {
                case FIXWORD_RELOFF:
#if _CPU == 8086
                    AddAFix( AsmCodeAddress, name, FIX_RELOFF16, offset );
                    AsmCodeAddress += 2;
#else
                    AddAFix( AsmCodeAddress, name, FIX_RELOFF32, offset );
                    AsmCodeAddress += 4;
#endif
                    break;
                case FIXWORD_OFFSET:
#if _CPU == 8086
                    AddAFix( AsmCodeAddress, name, FIX_OFF16, offset );
                    AsmCodeAddress += 2;
#else
                    AddAFix( AsmCodeAddress, name, FIX_OFF32, offset );
                    AsmCodeAddress += 4;
#endif
                    break;
                case FIXWORD_SEGMENT:
                    AddAFix( AsmCodeAddress, name, FIX_SEG, 0 );
                    AsmCodeAddress += 2;
                    break;
                }
            }
        }
        if( AsmCodeAddress > MAXIMUM_BYTESEQ ) {
            if( !too_many_bytes ) {
                CErr1( ERR_TOO_MANY_BYTES_IN_PRAGMA );
                too_many_bytes = true;
            }
            AsmCodeAddress = 0;          // reset index to we don't overrun buffer
        }
    }
    PPCTL_DISABLE_MACROS();
    if( too_many_bytes ) {
        uses_auto = false;
    } else {
        uses_auto = InsertFixups( buff, AsmCodeAddress, code );
    }
    FreeAsmFixups();
    AsmSysFini();
    return( uses_auto );
}