7a9389330e
gcc/: * gcc.c (default_compilers): Add entry for ".go". * common.opt: Add -static-libgo as a driver option. * doc/install.texi (Configuration): Mention libgo as an option for --enable-shared. Mention go as an option for --enable-languages. * doc/invoke.texi (Overall Options): Mention .go as a file name suffix. Mention go as a -x option. * doc/frontends.texi (G++ and GCC): Mention Go as a supported language. * doc/sourcebuild.texi (Top Level): Mention libgo. * doc/standards.texi (Standards): Add section on Go language. Move references for other languages into their own section. * doc/contrib.texi (Contributors): Mention that I contributed the Go frontend. gcc/testsuite/: * lib/go.exp: New file. * lib/go-dg.exp: New file. * lib/go-torture.exp: New file. * lib/target-supports.exp (check_compile): Match // Go. From-SVN: r167407
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
#include <errno.h>
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#include "runtime.h"
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#include "malloc.h"
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void*
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runtime_SysAlloc(uintptr n)
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{
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void *p;
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mstats.sys += n;
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p = runtime_mmap(nil, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_PRIVATE, -1, 0);
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if (p == MAP_FAILED) {
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if(errno == EACCES) {
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printf("mmap: access denied\n");
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printf("If you're running SELinux, enable execmem for this process.\n");
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} else {
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printf("mmap: errno=%d\n", errno);
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}
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exit(2);
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}
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return p;
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}
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void
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runtime_SysUnused(void *v, uintptr n)
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{
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USED(v);
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USED(n);
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// TODO(rsc): call madvise MADV_DONTNEED
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}
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void
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runtime_SysFree(void *v, uintptr n)
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{
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mstats.sys -= n;
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runtime_munmap(v, n);
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}
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void
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runtime_SysMemInit(void)
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{
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// Code generators assume that references to addresses
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// on the first page will fault. Map the page explicitly with
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// no permissions, to head off possible bugs like the system
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// allocating that page as the virtual address space fills.
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// Ignore any error, since other systems might be smart
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// enough to never allow anything there.
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runtime_mmap(nil, 4096, PROT_NONE, MAP_FIXED|MAP_ANON|MAP_PRIVATE, -1, 0);
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}
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