• Russ Cox's avatar
    5l, 6l, 8l: link pclntab and symtab as ordinary rodata symbols · 19fd5c78
    Russ Cox authored
    That is, move the pc/ln table and the symbol table
    into the read-only data segment.  This eliminates
    the need for a special load command to map the
    symbol table into memory, which makes the
    information available on systems that couldn't handle
    the magic load to 0x99000000, like NaCl and ARM QEMU
    and Linux without config_highmem=y.  It also
    eliminates an #ifdef and some clumsy code to
    find the symbol table on Windows.
    
    The bad news is that the binary appears to be bigger
    than it used to be.  This is not actually the case, though:
    the same amount of data is being mapped into memory
    as before, and the tables are still read-only, so they're
    still shared across multiple instances of the binary as
    they were before.  The difference is just that the tables
    aren't squirreled away in some section that "size" doesn't
    know to look at.
    
    This is a checkpoint.
    It probably breaks Windows and breaks NaCl more
    than it used to be broken, but those will be fixed.
    The logic involving -s needs to be revisited too.
    
    Fixes #871.
    
    R=ken2
    CC=golang-dev
    https://golang.org/cl/2587041
    19fd5c78
symtab.c 4.81 KB