Two compiler options are provided to write additional information
to the listing. The +m
option is used to generate identifier maps. The +o
option is used to generate code offsets.
Identifier Maps |
 |
When the +m
option is specified, the compiler produces a series of identifier
maps, grouped by function. The map shows the declared identifiers,
their storage class, type, and address or constant value.
The first column of the map lists, in alphabetical order,
the initial 20 characters of all the identifiers declared in the
function. Member names of structures and unions appear indented
under the structure or union name.
The second column displays the storage class of each identifier.
The compiler distinguishes the following storage classes:
auto external definition static
constant member typedef
external register |
The third column shows the type of the identifier. The types
include:
array int unsigned char
char long int unsigned int
double long long int unsigned long
enum short int unsigned long long
float struct unsigned short
function union void |
The fourth column indicates the relative register location
of an identifier. Members of a union type are in the form W @ B,
where W is the
byte offset and B
is the bit offset within the word. Both offsets are given in hexadecimal
notation.
Example
main()
{
enum colors {red, green, blue} this_color;
struct SS {
char *name;
char sex;
int birthdate;
int ssn;
float gpa;
struct SS *previous;
} pupil_rec;
union UU {
int flag;
float average;
} datum;
struct SS second_pupil;
this_color = red;
pupil_rec.sex = "m";
datum.flag = 1;
second_pupil.gpa = 3.72;
} |
G L O B A L I D E N T I F I E R M A P
Identifier Class Type Address
- -
main ext def int () main |
L O C A L I D E N T I F I E R M A P S
main
Identifier Class Type Address
- -
blue const enum colors 2
datum auto union UU SP-64
flag member int 0x0 @ 0x0
average member float 0x0 @ 0x0
green const enum colors 1
pupil_rec auto struct SS SP-60
name member char * 0x0 @ 0x0
sex member char 0x4 @ 0x0
birthdate member int 0x8 @ 0x0
ssn member int 0xc @ 0x0
gpa member float 0x10 @ 0x0
previous member struct * 0x14 @ 0x0
red const enum colors 0
second_pupil auto struct SS SP-88
name member char * 0x0 @ 0x0
sex member char 0x4 @ 0x0
birthdate member int 0x8 @ 0x0
ssn member int 0xc @ 0x0
gpa member float 0x10 @ 0x0
previous member struct * 0x14 @ 0x0
this_color auto enum colors SP-36 |
Code Offsets |
|
When the +o
option is specified, the compiler produces a series of the code
offsets for each executable statement, grouped by function. Source
line numbers are given in decimal notation followed by the associated
code address specified in hexadecimal notation. The code address
is relative to the beginning of the function.
