The system call puts the time in a pair of registers, not in the
timeval structure. Add code to move the time to the structure, so
programs see the correct time, not garbage. This fixes our example
programs that use the time as a random seed.
This preserves the name and value of every symbol. The type and other
info of a symbol might be lost. In gdb, one can now "disas main" or
"disas '.ret'" to disassemble functions by name.
Most symbols are in sections, so I also teach cvmach to emit the Mach
section headers. The entry point in plat/osx*/descr moves down to
make room for the section headers and LC_SYMTAB.
I fix some bugs in calculations of cvmach. They were wrong if ROM had
a greater alignment than TEXT, or if DATA did not start on a page
boundary. I introduce machseg[] to simplify the mess of variables in
main(). I declare most functions as static. Also, cvmach becomes the
first program to #include <object.h>.
Before this commit, the headers in plat/osx/include got installed
twice into PLATIND/osx386/include and PLATIND/osxppc/include. This
commit installs them once into PLATIND/osx/include and changes both
descr files to find them.
Several rules in lang/ depend on plat/osx386/include+headers or
plat/osxppc/include+headers. They each become a simplerule that
depends on plat/osx/include+headers.
These produce Mach-o executables for Mac OS X on Intel or PowerPC
processors. Our code generator for PowerPC (mach/powerpc) still has
bugs. Some examples seem to run, but startrek crashes. Our code
generator for Intel (mach/i386) is better.
There is a problem with job control. If you run paranoia or startrek,
then suspend the job (^Z) and resume it ('fg' in bash), then read(2)
might fail with EINTR.
The larger files in this commit are
- plat/osx/cvmach/cvmach.c
- plat/osx/libsys/brk.c
- plat/osx386/libsys/sigaction.s
- plat/osxppc/libsys/sigaction.s
