Re: executing code in mmapped memory

From: Dennis Handly (dhandly_at_cup.hp.com)
Date: 08/27/03

  • Next message: ECStahl: "Re: Memory Question" 
    Date: 26 Aug 2003 20:56:10 -0700

    Anton Ertl (anton@mips.complang.tuwien.ac.at) wrote:
    : I allocate the memory for the code I generate at run-time with
    : mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0)

    : As soon as the program tries to execute the first instruction in this
    : region, it produces a SIGSEGV
    : - the PA-RISC segmentation somehow gets in the way.

    This is probably it. How did you "call" this code?

    >From a register dump, what is sr4, sr5, pcsqh and pcoqh?
    Unfortunately gdb doesn't model the hardware and track the 96 bit PC value.

  • Next message: ECStahl: "Re: Memory Question"

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