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| /freebsd-10.0-release/gnu/usr.bin/binutils/ld/ | ||
| H A D | elf64_ia64_fbsd.sh | diff 219876 Tue Mar 22 15:25:55 MDT 2011 marcel Change the load address from offset 0 in region 1 to offset 4G in region 0. This (almost) gives us the address space back (at the bottom) that we lost at the top. Region 0 has traditionally been reserved for IA-32 emulation, which has not been of great interest. By starting 64-bit processes at the 4G boundary we at least preserve some of the advantages: 1. Any invalid pointer cast (from int to pointer and back) will still always fail and not only when more than 4GB of memory is in use. 2. Memory sharing between 64-bit and 32-bit processes is still possibly by using addresses < 4G. |
| H A D | Makefile.ia64 | diff 219876 Tue Mar 22 15:25:55 MDT 2011 marcel Change the load address from offset 0 in region 1 to offset 4G in region 0. This (almost) gives us the address space back (at the bottom) that we lost at the top. Region 0 has traditionally been reserved for IA-32 emulation, which has not been of great interest. By starting 64-bit processes at the 4G boundary we at least preserve some of the advantages: 1. Any invalid pointer cast (from int to pointer and back) will still always fail and not only when more than 4GB of memory is in use. 2. Memory sharing between 64-bit and 32-bit processes is still possibly by using addresses < 4G. |
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