105 lines
3.8 KiB
Diff
105 lines
3.8 KiB
Diff
Backport from 0.4.0
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commit 6f3714499e24b88cc05a02c8692015c5c17c5508
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Author: Michael Ellerman <michael@ellerman.id.au>
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Date: Wed Apr 18 17:58:00 2012 -0700
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Add ppc64 platform
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Add 64-bit ppc support with a new platform file and update to the
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platformselect code.
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Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
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Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
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(cherry picked from commit b17773a7807f85f897413391f59d4a6d65ac9008)
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diff --git a/platform/switch_ppc64_linux.h b/platform/switch_ppc64_linux.h
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new file mode 100644
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index 0000000..ded1fda
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--- /dev/null
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+++ b/platform/switch_ppc64_linux.h
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@@ -0,0 +1,70 @@
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+/*
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+ * this is the internal transfer function.
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+ *
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+ * HISTORY
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+ * 09-Mar-12 Michael Ellerman <michael@ellerman.id.au>
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+ * 64-bit implementation, copied from 32-bit.
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+ * 07-Sep-05 (py-dev mailing list discussion)
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+ * removed 'r31' from the register-saved. !!!! WARNING !!!!
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+ * It means that this file can no longer be compiled statically!
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+ * It is now only suitable as part of a dynamic library!
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+ * 14-Jan-04 Bob Ippolito <bob@redivi.com>
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+ * added cr2-cr4 to the registers to be saved.
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+ * Open questions: Should we save FP registers?
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+ * What about vector registers?
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+ * Differences between darwin and unix?
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+ * 24-Nov-02 Christian Tismer <tismer@tismer.com>
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+ * needed to add another magic constant to insure
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+ * that f in slp_eval_frame(PyFrameObject *f)
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+ * STACK_REFPLUS will probably be 1 in most cases.
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+ * gets included into the saved stack area.
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+ * 04-Oct-02 Gustavo Niemeyer <niemeyer@conectiva.com>
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+ * Ported from MacOS version.
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+ * 17-Sep-02 Christian Tismer <tismer@tismer.com>
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+ * after virtualizing stack save/restore, the
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+ * stack size shrunk a bit. Needed to introduce
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+ * an adjustment STACK_MAGIC per platform.
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+ * 15-Sep-02 Gerd Woetzel <gerd.woetzel@GMD.DE>
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+ * slightly changed framework for sparc
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+ * 29-Jun-02 Christian Tismer <tismer@tismer.com>
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+ * Added register 13-29, 31 saves. The same way as
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+ * Armin Rigo did for the x86_unix version.
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+ * This seems to be now fully functional!
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+ * 04-Mar-02 Hye-Shik Chang <perky@fallin.lv>
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+ * Ported from i386.
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+ */
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+
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+#define STACK_REFPLUS 1
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+
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+#ifdef SLP_EVAL
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+
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+#define STACK_MAGIC 6
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+
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+/* !!!!WARNING!!!! need to add "r31" in the next line if this header file
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+ * is meant to be compiled non-dynamically!
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+ */
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+#define REGS_TO_SAVE "r2", "r14", "r15", "r16", "r17", "r18", "r19", "r20", \
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+ "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", "r31", \
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+ "cr2", "cr3", "cr4"
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+static int
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+slp_switch(void)
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+{
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+ register long *stackref, stsizediff;
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+ __asm__ volatile ("" : : : REGS_TO_SAVE);
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+ __asm__ ("mr %0, 1" : "=g" (stackref) : );
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+ {
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+ SLP_SAVE_STATE(stackref, stsizediff);
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+ __asm__ volatile (
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+ "mr 11, %0\n"
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+ "add 1, 1, 11\n"
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+ : /* no outputs */
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+ : "g" (stsizediff)
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+ : "11"
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+ );
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+ SLP_RESTORE_STATE();
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+ }
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+ __asm__ volatile ("" : : : REGS_TO_SAVE);
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+ return 0;
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+}
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+
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+#endif
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diff --git a/slp_platformselect.h b/slp_platformselect.h
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index 38b7ef4..68982d3 100644
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--- a/slp_platformselect.h
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+++ b/slp_platformselect.h
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@@ -8,6 +8,8 @@
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#include "platform/switch_amd64_unix.h" /* gcc on amd64 */
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#elif defined(__GNUC__) && defined(__i386__)
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#include "platform/switch_x86_unix.h" /* gcc on X86 */
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+#elif defined(__GNUC__) && defined(__powerpc64__) && defined(__linux__)
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+#include "platform/switch_ppc64_linux.h" /* gcc on PowerPC 64-bit */
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#elif defined(__GNUC__) && defined(__PPC__) && defined(__linux__)
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#include "platform/switch_ppc_unix.h" /* gcc on PowerPC */
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#elif defined(__GNUC__) && defined(__ppc__) && defined(__APPLE__)
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