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Add support for m68k #38

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merged 1 commit into from
Jan 6, 2014
Merged

Add support for m68k #38

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36 changes: 36 additions & 0 deletions platform/switch_m68k_gcc.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,36 @@
/*
* this is the internal transfer function.
*
* HISTORY
* 2014-01-06 Andreas Schwab <schwab@linux-m68k.org>
* File created.
*/

#ifdef SLP_EVAL

#define STACK_MAGIC 0

#define REGS_TO_SAVE "%d2", "%d3", "%d4", "%d5", "%d6", "%d7", \
"%a2", "%a3", "%a4"

static int
slp_switch(void)
{
int *stackref, stsizediff;
void *fp, *a5;
__asm__ volatile ("" : : : REGS_TO_SAVE);
__asm__ volatile ("move.l %%fp, %0" : "=m"(fp));
__asm__ volatile ("move.l %%a5, %0" : "=m"(a5));
__asm__ ("move.l %%sp, %0" : "=r"(stackref));
{
SLP_SAVE_STATE(stackref, stsizediff);
__asm__ volatile ("add.l %0, %%sp; add.l %0, %%fp" : : "r"(stsizediff));
SLP_RESTORE_STATE();
}
__asm__ volatile ("move.l %0, %%a5" : : "m"(a5));
__asm__ volatile ("move.l %0, %%fp" : : "m"(fp));
__asm__ volatile ("" : : : REGS_TO_SAVE);
return 0;
}

#endif
2 changes: 2 additions & 0 deletions slp_platformselect.h
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Original file line number Diff line number Diff line change
Expand Up @@ -36,4 +36,6 @@
#include "platform/switch_mips_unix.h" /* Linux/MIPS */
#elif defined(__GNUC__) && defined(__aarch64__)
#include "platform/switch_aarch64_gcc.h" /* Aarch64 ABI */
#elif defined(__GNUC__) && defined(__mc68000__)
#include "platform/switch_m68k_gcc.h" /* gcc on m68k */
#endif