What's New in C166 Version 7.57

• [A166 Macro Assembler]
  • Corrected: sometimes broken object files if multiple A166 run at the same time.
  • Corrected: two line feeds in Macro Processor Language (MPL) error message.
• [C166 C Compiler]
  • Corrected: compiler crash with intrinsic _lror_() in combination with a modular operation. Example:

    #include <intrins.h>
    
    unsigned long ROR32(unsigned long v, int n)
    {
      n = n%32;
      return _lror_(v,n);
    }
    

  • Corrected: under some circumstances the C166 generates erroneously long and indirect addressing modes togehter with the EXTS instruction which overrides accesses to data in other pages.
  • Corrected: a user stackpointer corruption which occurs when the struct-parameter of a function gets initialized by the return struct-value of another funcion call. Example:

    -------------------------------------------------------------
                         Source code
    -------------------------------------------------------------
    
    08     :::::::
    09     typedef struct
    10     {
    11       DWORD dwTest1;
    12       DWORD dwTest2;
    13     }tStruct;
    14
    15     static void test (void);
    16     static tStruct test_1 (DWORD dw1, DWORD dw2);
    17     static tStruct test_2 (tStruct tVal1, WORD wVal2);
    18
    19     static void test (void)
    20     {
    21       tStruct tVar1;
    22       /* The first parameter of function test_2 gets initialized by the return value of the function test_1 */
    23       tVar1 = test_2(test_1(0x1000, 0x2000), 0xfff);
    24     }
    25     :::::::
    
    
    -----------------------------------------------------------------           -------------------------------------------------------------
                         Wrong code generation                                                    Corrected code generation
    -----------------------------------------------------------------           -------------------------------------------------------------
    
                  The user stackpointer R0 gets corrupted  ---------+
                                                                    |
                                               ; SOURCE LINE # 23   |                                                      ; SOURCE LINE # 23
    0004 E6F4FF0F      MOV       R4,#0FFFH                          |           0004 E6F4FF0F      MOV       R4,#0FFFH
    0008 8840          MOV       [-R0],R4                           |           0008 8840          MOV       [-R0],R4
    000A E6FA0020      MOV       R10,#02000H                        |           000A E6FA0020      MOV       R10,#02000H
    000E E00B          MOV       R11,#00H                           |           000E E00B          MOV       R11,#00H
    0010 E6F80010      MOV       R8,#01000H                         |           0010 E6F80010      MOV       R8,#01000H
    0014 E009          MOV       R9,#00H                            |           0014 E009          MOV       R9,#00H
    0016 DA000000 R    CALLS     SEG (test_1),test_1                |           0016 DA000000 R    CALLS     SEG (test_1),test_1
    001A E087          MOV       R7,#08H                            |           001A E087          MOV       R7,#08H
    001C 2007          SUB       R0,R7                              |           001C 2007          SUB       R0,R7
    001E F060          MOV       R6,R0                              |           001E F060          MOV       R6,R0
    0020 0061          ADD       R6,R1                              |           0020 0061          ADD       R6,R1
    0022 DA000000 E    CALLS     SEG (?C_WCPYSH),?C_WCPYSH          |           0022 DA000000 E    CALLS     SEG (?C_WCPYSH),?C_WCPYSH
    0026 0001          ADD       R0,R1                    <---------+           0026 DA000000 R    CALLS     SEG (test_2),test_2
    0028 DA000000 R    CALLS     SEG (test_2),test_2                            002A E0A6          MOV       R6,#0AH       ; tVar1
    002C E0A6          MOV       R6,#0AH       ; tVar1                          002C 0060          ADD       R6,R0         ; tVar1
    002E 0060          ADD       R6,R0         ; tVar1                          002E 0061          ADD       R6,R1
    0030 0061          ADD       R6,R1                                          0030 E087          MOV       R7,#08H
    0032 E087          MOV       R7,#08H                                        0032 DA000000 E    CALLS     SEG (?C_WCPYNH),?C_WCPYNH
    0034 DA000000 E    CALLS     SEG (?C_WCPYNH),?C_WCPYNH                      0036 0001          ADD       R0,R1
    0038 0001          ADD       R0,R1                                          0038 06F00A00      ADD       R0,#0AH
    003A 06F00A00      ADD       R0,#0AH                                                                                   ; SOURCE LINE # 24
                                               ; SOURCE LINE # 24
    

• [Debug Commands]
  • Added: New debugger command COVTOFILE filespec [\\app][\module][\function] [DETAILS] [ASM] which works like the COVERAGE command but sends the output into a file. This is much faster than into the output window.
• [µVision]
  • This C166 release comes with µVision V5.25.3.
  • Enhanced: New PC-Lint configuration option to add project target and compiler specific preprocessor symbols.
• [Supported Operating Systems]
  • Refer to System Requirements Overview for hardware and operating system requirements.