diff options
| -rw-r--r-- | libinterp/comp-power.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/libinterp/comp-power.c b/libinterp/comp-power.c index a53b0bf8..993542d7 100644 --- a/libinterp/comp-power.c +++ b/libinterp/comp-power.c @@ -31,6 +31,10 @@ #define MFSPR(s, d) gen(XO(31,339) | ((d)<<21) | ((s)<<11)) #define MTSPR(s, d) gen(XO(31,467) | ((s)<<21) | ((d)<<11)); +#define MFCR(d) gen(XO(31,19) | ((d)<<21)) +#define MTCRF(s, mask) gen(XO(31,144) | ((s)<<21) | ((mask)<<12)) +#define MTCR(s) MTCRF(s, 0xff) + #define SLWI(d,a,n) gen(slw((d),(a),(n),0)) #define LRET() gen(Oblr) @@ -1636,7 +1640,7 @@ comp(Inst *i) } enum { - PREFLEN = 20, /* max instruction words in comvec */ + PREFLEN = 64, /* max instruction words in comvec */ }; static void @@ -1649,6 +1653,45 @@ preamble(void) s = code = malloc(PREFLEN*sizeof(*code)); if(s == nil) error(exNomem); + +#ifdef __ELF__ + if(macjit) { + ulong *cp; + int r; + + /* + * ELF frame: + * 0(%sp) - back chain + * 4(%sp) - callee's LR save slot + * 8(%sp) to 36(%sp) - 8 words of parameter list area + * 40(%sp) to 48(%sp) - pad to 16 byte alignment/local vars + */ + mfspr(Ro1, Rlr); + AIRR(Ostw, Ro1, Rsp,4); + AIRR(Ostwu, Rsp, Rsp,-128); + + MFCR(Ro1); + AIRR(Ostw, Ro1, Rsp,52); + for (r = 14; r < 32; ++r) + AIRR(Ostw, r, Rsp,r*4); + + cp = code; + gen(Ob | Lk); + + AIRR(Olwz, Ro1, Rsp,52); + MTCR(Ro1); + for (r = 14; r < 32; ++r) + AIRR(Olwz, r, Rsp,r*4); + AIRR(Oaddi, Rsp, Rsp, 128); + + AIRR(Olwz, Ro1, Rsp,4); + mtspr(Rlr, Ro1); + LRET(); + + PATCH(cp); + } +#endif /* __ELF__ */ + ldc((ulong)&R, Rreg); SETR0(); mfspr(Rlink, Rlr); |