[Tinyos-help] "__attribute__ ((signal, spontaneous, C))" and " __attribute__ ((interrupt, spontaneous, C))"

[jiwen zhang]

Hello all:
    I have some question about the codes below:
    1. what are the functions of  "__attribute__ ((signal, spontaneous, C))"
and " __attribute__ ((interrupt, spontaneous, C))"?
    2.what are the meanings of "singanl","spontaneous","C" and "interrupt"?
    3.what are the differences between "__attribute__ ((signal, spontaneous,
C))" and " __attribute__ ((interrupt, spontaneous, C))"?
   can you give me the answer? Thank you very much?

codes:

#define TOSH_SIGNAL(signame)     \
void signame() __attribute__ ((signal, spontaneous, C))

#define TOSH_INTERRUPT(signame)    \
void signame() __attribute__ ((interrupt, spontaneous, C))
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