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authorMike Frysinger <vapier@gentoo.org>2006-03-23 03:16:41 +0000
committerMike Frysinger <vapier@gentoo.org>2006-03-23 03:16:41 +0000
commit9535cbf18c6b4415dc35c220ca4cca15eba5dc1b (patch)
tree4429a2f527eb9ab5ccffcf23257a4e2bd54e56cb /libc/misc/time
parentd126b4a3fbf7e423206712145b4a4efdc0c5b1c1 (diff)
Richard Sandiford writes:
This patch fixes a miscompilation of mmap() for Coldfire with gcc 4.x. The problem was that the syscall was being invoked before any part of the argument structure (buffer[]) had been initialised. The outcome of gcc PR 19341 is that volatile asms don't implicitly use or clobber memory, and that "memory" must be explicitly listed in the clobber list: http://gcc.gnu.org/PR19341 All syscalls can potentially use or clobber memory, so this patch adds a "memory" clobber to all the m68k syscall wrappers that I could find.
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