From 1dac2263372df2b85db5d029a45721fa158a5c9d Mon Sep 17 00:00:00 2001 From: xiubuzhe Date: Sun, 8 Oct 2023 20:59:00 +0800 Subject: first add files --- lib/greenlet/platform/switch_ppc_aix.h | 87 ++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 lib/greenlet/platform/switch_ppc_aix.h (limited to 'lib/greenlet/platform/switch_ppc_aix.h') diff --git a/lib/greenlet/platform/switch_ppc_aix.h b/lib/greenlet/platform/switch_ppc_aix.h new file mode 100644 index 0000000..c7d476f --- /dev/null +++ b/lib/greenlet/platform/switch_ppc_aix.h @@ -0,0 +1,87 @@ +/* + * this is the internal transfer function. + * + * HISTORY + * 07-Mar-11 Floris Bruynooghe + * Do not add stsizediff to general purpose + * register (GPR) 30 as this is a non-volatile and + * unused by the PowerOpen Environment, therefore + * this was modifying a user register instead of the + * frame pointer (which does not seem to exist). + * 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 + * 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 + * 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 + * Ported from MacOS version. + * 17-Sep-02 Christian Tismer + * 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 + * slightly changed framework for sparc + * 29-Jun-02 Christian Tismer + * 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 + * Ported from i386. + */ + +#define STACK_REFPLUS 1 + +#ifdef SLP_EVAL + +#define STACK_MAGIC 3 + +/* !!!!WARNING!!!! need to add "r31" in the next line if this header file + * is meant to be compiled non-dynamically! + */ +#define REGS_TO_SAVE "r13", "r14", "r15", "r16", "r17", "r18", "r19", "r20", \ + "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", \ + "cr2", "cr3", "cr4" +static int +slp_switch(void) +{ + register int err; + register int *stackref, stsizediff; + __asm__ volatile ("" : : : REGS_TO_SAVE); + __asm__ ("mr %0, 1" : "=r" (stackref) : ); + { + SLP_SAVE_STATE(stackref, stsizediff); + __asm__ volatile ( + "mr 11, %0\n" + "add 1, 1, 11\n" + : /* no outputs */ + : "r" (stsizediff) + : "11" + ); + SLP_RESTORE_STATE(); + } + __asm__ volatile ("" : : : REGS_TO_SAVE); + __asm__ volatile ("li %0, 0" : "=r" (err)); + return err; +} + +#endif + +/* + * further self-processing support + */ + +/* + * if you want to add self-inspection tools, place them + * here. See the x86_msvc for the necessary defines. + * These features are highly experimental und not + * essential yet. + */ -- cgit v1.2.3