codekingpro/portable-devtools

1#ifdef SLP_EVAL
2#define STACK_MAGIC 0
3#define REG_FP "r8"
4#ifdef __CSKYABIV2__
5#define REGS_TO_SAVE_GENERAL "r4", "r5", "r6", "r7", "r9", "r10", "r11", "r15",\
6                             "r16", "r17", "r18", "r19", "r20", "r21", "r22",\
7                             "r23", "r24", "r25"
8
9#if defined (__CSKY_HARD_FLOAT__) || (__CSKY_VDSP__)
10#define REGS_TO_SAVE REGS_TO_SAVE_GENERAL, "vr8", "vr9", "vr10", "vr11", "vr12",\
11                                           "vr13", "vr14", "vr15"
12#else
13#define REGS_TO_SAVE REGS_TO_SAVE_GENERAL
14#endif
15#else
16#define REGS_TO_SAVE "r9", "r10", "r11", "r12", "r13", "r15"
17#endif
18
19
20static int
21#ifdef __GNUC__
22__attribute__((optimize("no-omit-frame-pointer")))
23#endif
24slp_switch(void)
25{
26        int *stackref, stsizediff;
27        int result;
28
29        __asm__ volatile ("" : : : REGS_TO_SAVE);
30        __asm__ ("mov %0, sp" : "=r" (stackref));
31        {
32                SLP_SAVE_STATE(stackref, stsizediff);
33                __asm__ volatile (
34                    "addu sp,%0\n"
35                    "addu "REG_FP",%0\n"
36                    :
37                    : "r" (stsizediff)
38                    );
39		
40                SLP_RESTORE_STATE();
41        }
42        __asm__ volatile ("movi %0, 0" : "=r" (result));
43        __asm__ volatile ("" : : : REGS_TO_SAVE);
44
45        return result;
46}
47
48#endif
49