63 lines
2.0 KiB
Diff
63 lines
2.0 KiB
Diff
# HG changeset patch
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# User Alexey Borzenkov <snaury@gmail.com>
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# Date 1313701525 -14400
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# Node ID 25bf29f4d3b79b026c1c05787bb741a8e7ef2229
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# Parent c0bf397a723d4b61d7ef78cf575dea4c0fdb527e
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Fix compilation and register problems on some i386 configurations
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diff -r c0bf397a723d4b61d7ef78cf575dea4c0fdb527e -r 25bf29f4d3b79b026c1c05787bb741a8e7ef2229 platform/switch_x86_unix.h
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--- a/platform/switch_x86_unix.h Thu Aug 18 02:44:20 2011 +0400
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+++ b/platform/switch_x86_unix.h Fri Aug 19 01:05:25 2011 +0400
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@@ -2,6 +2,8 @@
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* this is the internal transfer function.
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*
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* HISTORY
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+ * 19-Aug-11 Alexey Borzenkov <snaury@gmail.com>
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+ * Correctly save ebp, ebx and cw
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* 07-Sep-05 (py-dev mailing list discussion)
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* removed 'ebx' from the register-saved. !!!! WARNING !!!!
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* It means that this file can no longer be compiled statically!
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@@ -34,18 +36,13 @@
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static int
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slp_switch(void)
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{
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+ void *ebp, *ebx;
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+ unsigned short cw;
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register int *stackref, stsizediff;
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- /* !!!!WARNING!!!! need to add "ebx" in the next line, as well as in the
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- * last line of this function, if this header file is meant to be compiled
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- * non-dynamically!
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- */
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- __asm__ volatile ("" : : :
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- "esi",
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- "edi"
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-#ifdef __MINGW32__
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- , "ebx"
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-#endif
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- );
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+ __asm__ volatile ("" : : : "esi", "edi");
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+ __asm__ volatile ("fstcw %0" : "=m" (cw));
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+ __asm__ volatile ("movl %%ebp, %0" : "=m" (ebp));
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+ __asm__ volatile ("movl %%ebx, %0" : "=m" (ebx));
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__asm__ ("movl %%esp, %0" : "=g" (stackref));
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{
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SLP_SAVE_STATE(stackref, stsizediff);
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@@ -57,13 +54,10 @@
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);
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SLP_RESTORE_STATE();
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}
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- __asm__ volatile ("" : : :
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- "esi",
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- "edi"
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-#ifdef __MINGW32__
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- , "ebx"
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-#endif
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- );
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+ __asm__ volatile ("movl %0, %%ebx" : : "m" (ebx));
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+ __asm__ volatile ("movl %0, %%ebp" : : "m" (ebp));
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+ __asm__ volatile ("fldcw %0" : : "m" (cw));
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+ __asm__ volatile ("" : : : "esi", "edi");
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return 0;
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}
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