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Add support for SuperH #401

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Add support for SuperH #401

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36 changes: 36 additions & 0 deletions src/greenlet/platform/switch_sh_gcc.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,36 @@
#define STACK_REFPLUS 1

#ifdef SLP_EVAL
#define STACK_MAGIC 0
#define REGS_TO_SAVE "r8", "r9", "r10", "r11", "r13", \
"fr12", "fr13", "fr14", "fr15"

// r12 Global context pointer, GP
// r14 Frame pointer, FP
// r15 Stack pointer, SP

static int
slp_switch(void)
{
int err;
void* fp;
int *stackref, stsizediff;
__asm__ volatile("" : : : REGS_TO_SAVE);
__asm__ volatile("mov.l r14, %0" : "=m"(fp) : :);
__asm__("mov r15, %0" : "=r"(stackref));
{
SLP_SAVE_STATE(stackref, stsizediff);
__asm__ volatile(
"add %0, r15\n"
"add %0, r14\n"
: /* no outputs */
: "r"(stsizediff));
SLP_RESTORE_STATE();
__asm__ volatile("mov r0, %0" : "=r"(err) : :);
}
__asm__ volatile("mov.l %0, r14" : : "m"(fp) :);
__asm__ volatile("" : : : REGS_TO_SAVE);
return err;
}

#endif
2 changes: 2 additions & 0 deletions src/greenlet/slp_platformselect.h
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Expand Up @@ -64,6 +64,8 @@ extern "C" {
# include "platform/switch_aarch64_gcc.h" /* LLVM Aarch64 ABI for Windows */
#elif defined(__GNUC__) && defined(__loongarch64) && defined(__linux__)
# include "platform/switch_loongarch64_linux.h" /* LoongArch64 */
#elif defined(__GNUC__) && defined(__sh__)
# include "platform/switch_sh_gcc.h" /* SuperH */
#endif

#ifdef __cplusplus
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