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author | Ian Lance Taylor <ian@gcc.gnu.org> | 2010-12-03 04:34:57 +0000 |
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committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2010-12-03 04:34:57 +0000 |
commit | 7a9389330e91acc3ed05deac2d198af25d13cf3c (patch) | |
tree | 38fe54a4f38ede5d949c915d66191f24a6fe5153 /libgo/runtime/go-defer.c | |
parent | 1aa6700378e5188a853c018256113ce6e1fb5c05 (diff) | |
download | gcc-7a9389330e91acc3ed05deac2d198af25d13cf3c.zip gcc-7a9389330e91acc3ed05deac2d198af25d13cf3c.tar.gz gcc-7a9389330e91acc3ed05deac2d198af25d13cf3c.tar.bz2 |
Add Go frontend, libgo library, and Go testsuite.
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
Diffstat (limited to 'libgo/runtime/go-defer.c')
-rw-r--r-- | libgo/runtime/go-defer.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/libgo/runtime/go-defer.c b/libgo/runtime/go-defer.c new file mode 100644 index 0000000..6425f05 --- /dev/null +++ b/libgo/runtime/go-defer.c @@ -0,0 +1,69 @@ +/* go-defer.c -- manage the defer stack. + + Copyright 2009 The Go Authors. All rights reserved. + Use of this source code is governed by a BSD-style + license that can be found in the LICENSE file. */ + +#include <stddef.h> + +#include "go-alloc.h" +#include "go-panic.h" +#include "go-defer.h" + +/* This function is called each time we need to defer a call. */ + +void +__go_defer (void *frame, void (*pfn) (void *), void *arg) +{ + struct __go_defer_stack *n; + + if (__go_panic_defer == NULL) + __go_panic_defer = ((struct __go_panic_defer_struct *) + __go_alloc (sizeof (struct __go_panic_defer_struct))); + + n = (struct __go_defer_stack *) __go_alloc (sizeof (struct __go_defer_stack)); + n->__next = __go_panic_defer->__defer; + n->__frame = frame; + n->__panic = __go_panic_defer->__panic; + n->__pfn = pfn; + n->__arg = arg; + n->__retaddr = NULL; + __go_panic_defer->__defer = n; +} + +/* This function is called when we want to undefer the stack. */ + +void +__go_undefer (void *frame) +{ + if (__go_panic_defer == NULL) + return; + while (__go_panic_defer->__defer != NULL + && __go_panic_defer->__defer->__frame == frame) + { + struct __go_defer_stack *d; + void (*pfn) (void *); + + d = __go_panic_defer->__defer; + pfn = d->__pfn; + d->__pfn = NULL; + + if (pfn != NULL) + (*pfn) (d->__arg); + + __go_panic_defer->__defer = d->__next; + __go_free (d); + } +} + +/* This function is called to record the address to which the deferred + function returns. This may in turn be checked by __go_can_recover. + The frontend relies on this function returning false. */ + +_Bool +__go_set_defer_retaddr (void *retaddr) +{ + if (__go_panic_defer != NULL && __go_panic_defer->__defer != NULL) + __go_panic_defer->__defer->__retaddr = retaddr; + return 0; +} |