__STDC__ | 1 | defined in all compiler modes except PCC mode |
__cplusplus | 1 | defined in C++ compiler mode |
__CFRONT_LIKE | 1 | defined in -cfront compiler
mode |
__arm | | defined if using armcc, tcc, armcpp , or tcpp |
__thumb | | defined if using tcc or tcpp |
__SOFTFP__ | | defined if compiling to use the software floating-point
library (-apcs /softfp) |
__APCS_NOSWST | | defined if -apcs /noswst in
use |
__APCS_REENT | | defined if -apcs /reent in
use |
__APCS_INTERWORK | | defined if -apcs /interwork in
use |
__APCS_32 | | defined unless -apcs /26bit is
in use |
__APCS_NOFP | | defined if -apcs /nofp in
use (no frame pointer) |
__APCS_FPREGARGS | | defined if -apcs /fpregargs is
in use |
__BIG_ENDIAN | | defined if compiling for a big-endian target |
__DIALECT_FUSSY | | defined if -fussy is specified. |
__DIALECT_PCC | | defined if -pcc is specified. |
__TARGET_ARCH_xx | | xx represents the
target architecture. The value of xx depends
on the target architecture. For example, if the compiler options -arch
4T or -cpu ARM7TDMI are specified then __TARGET_ARCH_4T is
defined, and no other symbol starting with _TARGET_ARCH_ is
defined. |
__TARGET_CPU_xx | | xx represents
the target cpu. The value of xx is derived
from the -processor compiler option, or the default
if none is specified. For example, if the compiler option -processor
ARM7TM is specified then _TARGET_CPU_ARM7TM is
defined and no other symbol starting with _TARGET_CPU_ is
defined.
If the target architecture only is specified,
without a target CPU then _TARGET_CPU_generic is
defined. If the processor name contains hyphen (-) characters,
these are mapped to an underscore (_). For example, -processor
SA-110 is mapped to __TARGET_CPU_SA_110. |
__TARGET_FEATURE_HALFWORD | | defined if the target architecture supports
halfword and signed byte access instructions. |
__TARGET_FEATURE_MULTIPLY | | defined if the target architecture supports
the long multiply instructions MULL and MULAL. |
__TARGET_FEATURE_THUMB | | defined if the target architecture is Thumb-aware. |
__ARMCC_VERSION | | Gives the version number of the compiler. The
value is the same for armcc and tcc; it is a decimal number, whose
value can be relied on to increase monotonically between releases. |
__CLK_TCK | 100 | centisecond clock definition |
__sizeof_int | 4 | sizeof(int), but available
in preprocessor expressions |
__sizeof_long | 4 | sizeof(long), but available
in preprocessor expressions |
__sizeof_ptr | 4 | sizeof(void *), but available
in preprocessor expressions |
__FILE__ | | the presumed full pathname of the current source file |
__MODULE__ | | contains the filename part of the value of __FILE__ |
__LINE__ | | the line number of the current source file |
__DATE__ | | the date of translation of the source file |
__TIME__ | | the time of translation of the source file |
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