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Add x32 psABI support #18

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Aug 17, 2012
Merged

Add x32 psABI support #18

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61 changes: 61 additions & 0 deletions platform/switch_x32_unix.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,61 @@
/*
* this is the internal transfer function.
*
* HISTORY
* 17-Aug-12 Fantix King <fantix.king@gmail.com>
* Ported from amd64.
*/

#define STACK_REFPLUS 1

#ifdef SLP_EVAL

#define STACK_MAGIC 0

#define REGS_TO_SAVE "r12", "r13", "r14", "r15"


static int
slp_switch(void)
{
void* ebp;
void* ebx;
unsigned int csr;
unsigned short cw;
register int *stackref, stsizediff;
__asm__ volatile ("" : : : REGS_TO_SAVE);
__asm__ volatile ("fstcw %0" : "=m" (cw));
__asm__ volatile ("stmxcsr %0" : "=m" (csr));
__asm__ volatile ("movl %%ebp, %0" : "=m" (ebp));
__asm__ volatile ("movl %%ebx, %0" : "=m" (ebx));
__asm__ ("movl %%esp, %0" : "=g" (stackref));
{
SLP_SAVE_STATE(stackref, stsizediff);
__asm__ volatile (
"addl %0, %%esp\n"
"addl %0, %%ebp\n"
:
: "r" (stsizediff)
);
SLP_RESTORE_STATE();
}
__asm__ volatile ("movl %0, %%ebx" : : "m" (ebx));
__asm__ volatile ("movl %0, %%ebp" : : "m" (ebp));
__asm__ volatile ("ldmxcsr %0" : : "m" (csr));
__asm__ volatile ("fldcw %0" : : "m" (cw));
__asm__ volatile ("" : : : REGS_TO_SAVE);
return 0;
}

#endif

/*
* further self-processing support
*/

/*
* if you want to add self-inspection tools, place them
* here. See the x86_msvc for the necessary defines.
* These features are highly experimental und not
* essential yet.
*/
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 @@ -6,6 +6,8 @@
#include "platform/switch_x86_msvc.h" /* MS Visual Studio on X86 */
#elif defined(MS_WIN64) && defined(_M_X64)
#include "platform/switch_x64_msvc.h" /* MS Visual Studio on X64 */
#elif defined(__GNUC__) && defined(__amd64__) && defined(__ILP32__)
#include "platform/switch_x32_unix.h" /* gcc on amd64 with x32 ABI */
#elif defined(__GNUC__) && defined(__amd64__)
#include "platform/switch_amd64_unix.h" /* gcc on amd64 */
#elif defined(__GNUC__) && defined(__i386__)
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