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32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
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/* The job of this fragment it to find argc and friends for INIT.
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This is done in one of two ways: either in the stack context
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of program start, or having dlopen pass them in. */
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#define SYSDEP_CALL_INIT(NAME, INIT) \
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void NAME (void *arg) \
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{ \
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int argc; \
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char **argv, **envp; \
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/* The next variable is only here to work around a bug in gcc <= 2.7.2.1. \
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If the address would be taken inside the expression the optimizer \
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would try to be too smart and throws it away. Grrr. */ \
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int *dummy_addr = &_dl_starting_up; \
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\
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__libc_multiple_libcs = dummy_addr && !_dl_starting_up; \
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\
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if (!__libc_multiple_libcs) \
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{ \
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argc = (int) arg; \
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argv = (char **) &arg + 1; \
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envp = &argv[argc+1]; \
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} \
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else \
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{ \
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argc = (int) arg; \
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argv = ((char ***) &arg)[1]; \
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envp = ((char ***) &arg)[2]; \
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} \
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\
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INIT (argc, argv, envp); \
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}
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