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Add ppc64 platform #7

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May 5, 2012
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Add ppc64 platform #7

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70 changes: 70 additions & 0 deletions platform/switch_ppc64_linux.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,70 @@
/*
* this is the internal transfer function.
*
* HISTORY
* 09-Mar-12 Michael Ellerman <[email protected]>
* 64-bit implementation, copied from 32-bit.
* 07-Sep-05 (py-dev mailing list discussion)
* removed 'r31' from the register-saved. !!!! WARNING !!!!
* It means that this file can no longer be compiled statically!
* It is now only suitable as part of a dynamic library!
* 14-Jan-04 Bob Ippolito <[email protected]>
* added cr2-cr4 to the registers to be saved.
* Open questions: Should we save FP registers?
* What about vector registers?
* Differences between darwin and unix?
* 24-Nov-02 Christian Tismer <[email protected]>
* needed to add another magic constant to insure
* that f in slp_eval_frame(PyFrameObject *f)
* STACK_REFPLUS will probably be 1 in most cases.
* gets included into the saved stack area.
* 04-Oct-02 Gustavo Niemeyer <[email protected]>
* Ported from MacOS version.
* 17-Sep-02 Christian Tismer <[email protected]>
* after virtualizing stack save/restore, the
* stack size shrunk a bit. Needed to introduce
* an adjustment STACK_MAGIC per platform.
* 15-Sep-02 Gerd Woetzel <[email protected]>
* slightly changed framework for sparc
* 29-Jun-02 Christian Tismer <[email protected]>
* Added register 13-29, 31 saves. The same way as
* Armin Rigo did for the x86_unix version.
* This seems to be now fully functional!
* 04-Mar-02 Hye-Shik Chang <[email protected]>
* Ported from i386.
*/

#define STACK_REFPLUS 1

#ifdef SLP_EVAL

#define STACK_MAGIC 6

/* !!!!WARNING!!!! need to add "r31" in the next line if this header file
* is meant to be compiled non-dynamically!
*/
#define REGS_TO_SAVE "r2", "r14", "r15", "r16", "r17", "r18", "r19", "r20", \
"r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", "r31", \
"cr2", "cr3", "cr4"
static int
slp_switch(void)
{
register long *stackref, stsizediff;
__asm__ volatile ("" : : : REGS_TO_SAVE);
__asm__ ("mr %0, 1" : "=g" (stackref) : );
{
SLP_SAVE_STATE(stackref, stsizediff);
__asm__ volatile (
"mr 11, %0\n"
"add 1, 1, 11\n"
: /* no outputs */
: "g" (stsizediff)
: "11"
);
SLP_RESTORE_STATE();
}
__asm__ volatile ("" : : : REGS_TO_SAVE);
return 0;
}

#endif
2 changes: 2 additions & 0 deletions slp_platformselect.h
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Expand Up @@ -10,6 +10,8 @@
#include "platform/switch_amd64_unix.h" /* gcc on amd64 */
#elif defined(__GNUC__) && defined(__i386__)
#include "platform/switch_x86_unix.h" /* gcc on X86 */
#elif defined(__GNUC__) && defined(__powerpc64__) && defined(__linux__)
#include "platform/switch_ppc64_linux.h" /* gcc on PowerPC 64-bit */
#elif defined(__GNUC__) && defined(__PPC__) && defined(__linux__)
#include "platform/switch_ppc_linux.h" /* gcc on PowerPC */
#elif defined(__GNUC__) && defined(__ppc__) && defined(__APPLE__)
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