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CARM User's Guide
CARM Introduction Compiling Programs
Environment Settings Command Prompt ERRORLEVEL Output Files Listing (LST) File Preprocessor (I) File Object (OBJ) File Source (SRC) File Directives Reference ARM BIGENDIAN BROWSE CODE COND DEBUG DEFINE EJECT FLOAT64 INCDIR INIT INTERWORK LISTINCLUDE NOALIAS NOCOND NOEXTEND NOINIT NOINTERWORK NOOBJECT NOPRINT OBJECT OPTIMIZE PACK PAGELENGTH PAGEWIDTH PREPRINT PREPRINTONLY PRINT RESTORE SAVE SIGNED_CHAR SYMBOLS TABS THUMB USERCLASS WARNING WARNINGLEVEL Language Extensions Preprocessor Advanced Programming Error Messages Library Reference AppendixListing (LST) File
The compiler listing file contains an abundance of information about the compilation process. It is composed of a number of sections, each of which is described below in the order in which they appear in the file.
Page Header
Each listing page includes a header with the compiler version number, source file name, date, time, and page number.
ARM COMPILER V1.00, MEASURE 10/01/2004 13:39:37 PAGE 1
Command Line
The entire command line that was used to invoke the compiler is included in the listing file. This often helps diagnose problems with the command line.
ARM COMPILER V1.00, COMPILATION OF MODULE MEASURE
OBJECT MODULE PLACED IN .\Obj\Measure.obj
COMPILER INVOKED BY: C:\Keil\ARM\BIN\CA.exe Measure.c BROWSE DEB
-UG CODE SYMBOLS PRINT(.\LST\MEASURE.LST) T
-ABS(4) OBJECT(.\Obj\Measure.obj)
Source Code
The source code listing outputs the line number as well as the source code on that line.
You may use the COND directive to include all conditional code (code in #if blocks) in the source code listing. The NOCOND directive may be used to exclude uncompiled conditional code blocks from the listing file.
You may use the LISTINCLUDE directive to include the contents of #include files in the source code listing. By default, include file contents are not output in the listing file.
48 char ERROR [] = "\n*** ERROR: %s\n";
49
50 #define WRONGINDEX 0xffff
51
52 /* The following function is called from */
53 /* the interrupt service routine. */
54 /* Save current measurements in save_record */
55
56 void save_current_measurements (void) {
57 1 save_record[sindex++] = current;
58 1 if (sindex == SCNT) sindex = 0;
59 1 if (sindex == savefirst) {
60 2 if (++savefirst == SCNT) savefirst = 0;
61 2 }
62 1 }
63
64
65
66 /* Timer 0 interrupt service function */
67 /* executes each 1 msec @ 20 MHz Crystal Clock */
68
69 void tc0 (void) __irq {
70 1 int i;
71 1
72 1 if (measurement_interval) {
73 2 save_current_measurements ();
74 2 measurement_interval = 0;
75 2 }
Externals Listing
The externals listing contains the external code and data references generated by the compiler from the C source code. This lists variables and routines that are found in other modules or libraries (and that are public symbols). The linker resolves these references at link time.
*** EXTERNALS: EXTERN CODE16 (getchar?T) EXTERN CODE16 (printf?T) EXTERN CODE16 (sscanf?T) EXTERN CODE16 (toupper?T) EXTERN CODE16 (init_serial?T)
Publics Listing
The publics listing contains the symbol names of code and data that are defined in the source file as public symbols. The linker uses these public symbols to resolve external references from other modules at link time.
*** PUBLICS: PUBLIC menu PUBLIC save_current_measurements?T PUBLIC save_current_measurements?A PUBLIC tc0?A PUBLIC read_index?T PUBLIC clear_records?T PUBLIC main PUBLIC ERROR
Data Listing
The data listing contains the names and data for variables defined in your source file. Constant data are stored in the ?CON?filename segment while initialized data are stored in the ?DT0?filename segment.
*** DATA SEGMENT '?CON?Measure': 00000000 ??S_12: 00000000 DB 'UNKNOWN COMMAND',0x00 00000010 ??S_11: 00000010 DB 0x0A,'Clear Measurement Records',0x0A,0x00 0000002C ??S_10: 0000002C DB 0x0A,'Quit Measurement Recording',0x0A 00000048 DB 0x00 . . . *** DATA SEGMENT '?DT0?Measure': 0000001C current: 0000001C DS 20 00000044 setinterval: 00000044 DS 4 0000004C interval: 0000004C DS 4 00000054 save_record: 00000054 DS 400 00000374 ERROR: 00000374 BEGIN_INIT 00000374 DB 0x0A,'*** ERROR: %s',0x0A,0x00 00000384 END_INIT
Assembly Listing
The assembly listing contains the assembly code generated by the compiler for the C source code. The CODE directive may be used to include the assembly listing output.
*** CODE SEGMENT '?PR?save_current_measurements?T?Measure':
57: save_record[sindex++] = current;
00000000 4800 LDR R1,=current ; current
00000002 4800 LDR R0,=sindex ; sindex
00000004 6802 LDR R2,[R0,#0x0] ; sindex
00000006 1C13 MOV R3,R2
00000008 3301 ADD R3,#0x1
0000000A 6003 STR R3,[R0,#0x0] ; sindex
0000000C 2014 MOV R0,#0x14
0000000E 4342 MUL R2,R0
00000010 4800 LDR R0,=save_record ; save_record
00000012 1880 ADD R0,R2 ; save_record
00000014 2214 MOV R2,#0x14
00000016 L_79:
00000016 780B LDRB R3,[R1,#0x0]
00000018 7003 STRB R3,[R0,#0x0]
0000001A 1C49 ADD R1,R1,#0x1
0000001C 1C40 ADD R0,R0,#0x1
0000001E 1E52 SUB R2,R2,#0x1
00000020 D1F9 BNE L_79 ; T=0x00000016
58: if (sindex == SCNT) sindex = 0;
00000022 4800 LDR R0,=sindex ; sindex
00000024 6800 LDR R0,[R0,#0x0] ; sindex
00000026 2814 CMP R0,#0x14
00000028 D102 BNE L_1 ; T=0x00000030
0000002A 2100 MOV R1,#0x0
0000002C 4800 LDR R0,=sindex ; sindex
0000002E 6001 STR R1,[R0,#0x0] ; sindex
00000030 L_1:
59: if (sindex == savefirst) {
00000030 4800 LDR R0,=savefirst ; savefirst
00000032 6800 LDR R0,[R0,#0x0] ; savefirst
00000034 4800 LDR R1,=sindex ; sindex
00000036 6809 LDR R1,[R1,#0x0] ; sindex
00000038 4281 CMP R1,R0
0000003A D107 BNE L_2 ; T=0x0000004C
Warnings and Errors
Problems encountered while compiling may cause errors and/or warnings that are output to the screen and to the listing file. Refer to the Error Messages chapter for details about error and warning messages.
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