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_ppc64_aix.h | 103 +++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 lib/greenlet/platform/switch_ppc64_aix.h (limited to 'lib/greenlet/platform/switch_ppc64_aix.h') diff --git a/lib/greenlet/platform/switch_ppc64_aix.h b/lib/greenlet/platform/switch_ppc64_aix.h new file mode 100644 index 0000000..e07b8de --- /dev/null +++ b/lib/greenlet/platform/switch_ppc64_aix.h @@ -0,0 +1,103 @@ +/* + * this is the internal transfer function. + * + * HISTORY + * 16-Oct-20 Jesse Gorzinski + * Copied from Linux PPC64 implementation + * 04-Sep-18 Alexey Borzenkov + * Workaround a gcc bug using manual save/restore of r30 + * 21-Mar-18 Tulio Magno Quites Machado Filho + * Added r30 to the list of saved registers in order to fully comply with + * both ppc64 ELFv1 ABI and the ppc64le ELFv2 ABI, that classify this + * register as a nonvolatile register used for local variables. + * 21-Mar-18 Laszlo Boszormenyi + * Save r2 (TOC pointer) manually. + * 10-Dec-13 Ulrich Weigand + * Support ELFv2 ABI. Save float/vector registers. + * 09-Mar-12 Michael Ellerman + * 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 + * 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. + * 31-Jul-12 Trevor Bowen + * Changed memory constraints to register only. + */ + +#define STACK_REFPLUS 1 + +#ifdef SLP_EVAL + +#define STACK_MAGIC 6 + +#if defined(__ALTIVEC__) +#define ALTIVEC_REGS \ + "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", \ + "v28", "v29", "v30", "v31", +#else +#define ALTIVEC_REGS +#endif + +#define REGS_TO_SAVE "r14", "r15", "r16", "r17", "r18", "r19", "r20", \ + "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", \ + "r31", \ + "fr14", "fr15", "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", \ + "fr22", "fr23", "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", \ + "fr30", "fr31", \ + ALTIVEC_REGS \ + "cr2", "cr3", "cr4" + +static int +slp_switch(void) +{ + register int err; + register long *stackref, stsizediff; + void * toc; + void * r30; + __asm__ volatile ("" : : : REGS_TO_SAVE); + __asm__ volatile ("std 2, %0" : "=m" (toc)); + __asm__ volatile ("std 30, %0" : "=m" (r30)); + __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 ("ld 30, %0" : : "m" (r30)); + __asm__ volatile ("ld 2, %0" : : "m" (toc)); + __asm__ volatile ("" : : : REGS_TO_SAVE); + __asm__ volatile ("li %0, 0" : "=r" (err)); + return err; +} + +#endif -- cgit v1.2.3