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| author | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2014-06-05 04:32:17 +0300 |
|---|---|---|
| committer | Paul Sokolovsky <pfalcon@users.sourceforge.net> | 2014-06-05 04:32:17 +0300 |
| commit | 76c8a4c91bccf27d188b5dcbc44899684d27d8da (patch) | |
| tree | 7a732ebeb44cfd3cb7830091d668faa7088d874c /unix/gccollect.c | |
| parent | 30583f58d5363657d74829160097c58aed4f3ce1 (diff) | |
| download | micropython-76c8a4c91bccf27d188b5dcbc44899684d27d8da.tar.gz micropython-76c8a4c91bccf27d188b5dcbc44899684d27d8da.zip | |
unix: Add setjmp-based GC register helper implementation.
As I suspected for a long time, for x86, register helper doesn't really make
any difference - there's simply not enough register to keep anything in
them for any prolonged time. Anything gets pushed on stack anyway. So, on
x86, uPy passed all tests even with empty reg helper. So, this setjmp
implementation goes as "untested".
Diffstat (limited to 'unix/gccollect.c')
| -rw-r--r-- | unix/gccollect.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/unix/gccollect.c b/unix/gccollect.c index d934f9cae2..4f3b786e72 100644 --- a/unix/gccollect.c +++ b/unix/gccollect.c @@ -34,6 +34,17 @@ extern void *stack_top; +#if MICROPY_GCREGS_SETJMP +#include <setjmp.h> + +typedef jmp_buf regs_t; + +void gc_helper_get_regs(regs_t arr) { + setjmp(arr); +} + +#else // !MICROPY_GCREGS_SETJMP + // We capture here callee-save registers, i.e. ones which may contain // interesting values held there by our callers. It doesn't make sense // to capture caller-saved registers, because they, well, put on the @@ -112,6 +123,7 @@ void gc_helper_get_regs(regs_t arr) { arr[9] = r13; } #endif +#endif // !MICROPY_GCREGS_SETJMP void gc_collect(void) { //gc_dump_info(); |