diff options
Diffstat (limited to 'deps/LuaJIT/src/lj_emit_ppc.h')
| -rw-r--r-- | deps/LuaJIT/src/lj_emit_ppc.h | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/deps/LuaJIT/src/lj_emit_ppc.h b/deps/LuaJIT/src/lj_emit_ppc.h deleted file mode 100644 index 21c3c2a..0000000 --- a/deps/LuaJIT/src/lj_emit_ppc.h +++ /dev/null @@ -1,238 +0,0 @@ -/* -** PPC instruction emitter. -** Copyright (C) 2005-2017 Mike Pall. See Copyright Notice in luajit.h -*/ - -/* -- Emit basic instructions --------------------------------------------- */ - -static void emit_tab(ASMState *as, PPCIns pi, Reg rt, Reg ra, Reg rb) -{ - *--as->mcp = pi | PPCF_T(rt) | PPCF_A(ra) | PPCF_B(rb); -} - -#define emit_asb(as, pi, ra, rs, rb) emit_tab(as, (pi), (rs), (ra), (rb)) -#define emit_as(as, pi, ra, rs) emit_tab(as, (pi), (rs), (ra), 0) -#define emit_ab(as, pi, ra, rb) emit_tab(as, (pi), 0, (ra), (rb)) - -static void emit_tai(ASMState *as, PPCIns pi, Reg rt, Reg ra, int32_t i) -{ - *--as->mcp = pi | PPCF_T(rt) | PPCF_A(ra) | (i & 0xffff); -} - -#define emit_ti(as, pi, rt, i) emit_tai(as, (pi), (rt), 0, (i)) -#define emit_ai(as, pi, ra, i) emit_tai(as, (pi), 0, (ra), (i)) -#define emit_asi(as, pi, ra, rs, i) emit_tai(as, (pi), (rs), (ra), (i)) - -#define emit_fab(as, pi, rf, ra, rb) \ - emit_tab(as, (pi), (rf)&31, (ra)&31, (rb)&31) -#define emit_fb(as, pi, rf, rb) emit_tab(as, (pi), (rf)&31, 0, (rb)&31) -#define emit_fac(as, pi, rf, ra, rc) \ - emit_tab(as, (pi) | PPCF_C((rc) & 31), (rf)&31, (ra)&31, 0) -#define emit_facb(as, pi, rf, ra, rc, rb) \ - emit_tab(as, (pi) | PPCF_C((rc) & 31), (rf)&31, (ra)&31, (rb)&31) -#define emit_fai(as, pi, rf, ra, i) emit_tai(as, (pi), (rf)&31, (ra), (i)) - -static void emit_rot(ASMState *as, PPCIns pi, Reg ra, Reg rs, - int32_t n, int32_t b, int32_t e) -{ - *--as->mcp = pi | PPCF_T(rs) | PPCF_A(ra) | PPCF_B(n) | - PPCF_MB(b) | PPCF_ME(e); -} - -static void emit_slwi(ASMState *as, Reg ra, Reg rs, int32_t n) -{ - lua_assert(n >= 0 && n < 32); - emit_rot(as, PPCI_RLWINM, ra, rs, n, 0, 31-n); -} - -static void emit_rotlwi(ASMState *as, Reg ra, Reg rs, int32_t n) -{ - lua_assert(n >= 0 && n < 32); - emit_rot(as, PPCI_RLWINM, ra, rs, n, 0, 31); -} - -/* -- Emit loads/stores --------------------------------------------------- */ - -/* Prefer rematerialization of BASE/L from global_State over spills. */ -#define emit_canremat(ref) ((ref) <= REF_BASE) - -/* Try to find a one step delta relative to another constant. */ -static int emit_kdelta1(ASMState *as, Reg t, int32_t i) -{ - RegSet work = ~as->freeset & RSET_GPR; - while (work) { - Reg r = rset_picktop(work); - IRRef ref = regcost_ref(as->cost[r]); - lua_assert(r != t); - if (ref < ASMREF_L) { - int32_t delta = i - (ra_iskref(ref) ? ra_krefk(as, ref) : IR(ref)->i); - if (checki16(delta)) { - emit_tai(as, PPCI_ADDI, t, r, delta); - return 1; - } - } - rset_clear(work, r); - } - return 0; /* Failed. */ -} - -/* Load a 32 bit constant into a GPR. */ -static void emit_loadi(ASMState *as, Reg r, int32_t i) -{ - if (checki16(i)) { - emit_ti(as, PPCI_LI, r, i); - } else { - if ((i & 0xffff)) { - int32_t jgl = i32ptr(J2G(as->J)); - if ((uint32_t)(i-jgl) < 65536) { - emit_tai(as, PPCI_ADDI, r, RID_JGL, i-jgl-32768); - return; - } else if (emit_kdelta1(as, r, i)) { - return; - } - emit_asi(as, PPCI_ORI, r, r, i); - } - emit_ti(as, PPCI_LIS, r, (i >> 16)); - } -} - -#define emit_loada(as, r, addr) emit_loadi(as, (r), i32ptr((addr))) - -static Reg ra_allock(ASMState *as, intptr_t k, RegSet allow); - -/* Get/set from constant pointer. */ -static void emit_lsptr(ASMState *as, PPCIns pi, Reg r, void *p, RegSet allow) -{ - int32_t jgl = i32ptr(J2G(as->J)); - int32_t i = i32ptr(p); - Reg base; - if ((uint32_t)(i-jgl) < 65536) { - i = i-jgl-32768; - base = RID_JGL; - } else { - base = ra_allock(as, i-(int16_t)i, allow); - } - emit_tai(as, pi, r, base, i); -} - -#define emit_loadk64(as, r, ir) \ - emit_lsptr(as, PPCI_LFD, ((r) & 31), (void *)&ir_knum((ir))->u64, RSET_GPR) - -/* Get/set global_State fields. */ -static void emit_lsglptr(ASMState *as, PPCIns pi, Reg r, int32_t ofs) -{ - emit_tai(as, pi, r, RID_JGL, ofs-32768); -} - -#define emit_getgl(as, r, field) \ - emit_lsglptr(as, PPCI_LWZ, (r), (int32_t)offsetof(global_State, field)) -#define emit_setgl(as, r, field) \ - emit_lsglptr(as, PPCI_STW, (r), (int32_t)offsetof(global_State, field)) - -/* Trace number is determined from per-trace exit stubs. */ -#define emit_setvmstate(as, i) UNUSED(i) - -/* -- Emit control-flow instructions -------------------------------------- */ - -/* Label for internal jumps. */ -typedef MCode *MCLabel; - -/* Return label pointing to current PC. */ -#define emit_label(as) ((as)->mcp) - -static void emit_condbranch(ASMState *as, PPCIns pi, PPCCC cc, MCode *target) -{ - MCode *p = --as->mcp; - ptrdiff_t delta = (char *)target - (char *)p; - lua_assert(((delta + 0x8000) >> 16) == 0); - pi ^= (delta & 0x8000) * (PPCF_Y/0x8000); - *p = pi | PPCF_CC(cc) | ((uint32_t)delta & 0xffffu); -} - -static void emit_jmp(ASMState *as, MCode *target) -{ - MCode *p = --as->mcp; - ptrdiff_t delta = (char *)target - (char *)p; - *p = PPCI_B | (delta & 0x03fffffcu); -} - -static void emit_call(ASMState *as, void *target) -{ - MCode *p = --as->mcp; - ptrdiff_t delta = (char *)target - (char *)p; - if ((((delta>>2) + 0x00800000) >> 24) == 0) { - *p = PPCI_BL | (delta & 0x03fffffcu); - } else { /* Target out of range: need indirect call. Don't use arg reg. */ - RegSet allow = RSET_GPR & ~RSET_RANGE(RID_R0, REGARG_LASTGPR+1); - Reg r = ra_allock(as, i32ptr(target), allow); - *p = PPCI_BCTRL; - p[-1] = PPCI_MTCTR | PPCF_T(r); - as->mcp = p-1; - } -} - -/* -- Emit generic operations --------------------------------------------- */ - -#define emit_mr(as, dst, src) \ - emit_asb(as, PPCI_MR, (dst), (src), (src)) - -/* Generic move between two regs. */ -static void emit_movrr(ASMState *as, IRIns *ir, Reg dst, Reg src) -{ - UNUSED(ir); - if (dst < RID_MAX_GPR) - emit_mr(as, dst, src); - else - emit_fb(as, PPCI_FMR, dst, src); -} - -/* Generic load of register with base and (small) offset address. */ -static void emit_loadofs(ASMState *as, IRIns *ir, Reg r, Reg base, int32_t ofs) -{ - if (r < RID_MAX_GPR) - emit_tai(as, PPCI_LWZ, r, base, ofs); - else - emit_fai(as, irt_isnum(ir->t) ? PPCI_LFD : PPCI_LFS, r, base, ofs); -} - -/* Generic store of register with base and (small) offset address. */ -static void emit_storeofs(ASMState *as, IRIns *ir, Reg r, Reg base, int32_t ofs) -{ - if (r < RID_MAX_GPR) - emit_tai(as, PPCI_STW, r, base, ofs); - else - emit_fai(as, irt_isnum(ir->t) ? PPCI_STFD : PPCI_STFS, r, base, ofs); -} - -/* Emit a compare (for equality) with a constant operand. */ -static void emit_cmpi(ASMState *as, Reg r, int32_t k) -{ - if (checki16(k)) { - emit_ai(as, PPCI_CMPWI, r, k); - } else if (checku16(k)) { - emit_ai(as, PPCI_CMPLWI, r, k); - } else { - emit_ai(as, PPCI_CMPLWI, RID_TMP, k); - emit_asi(as, PPCI_XORIS, RID_TMP, r, (k >> 16)); - } -} - -/* Add offset to pointer. */ -static void emit_addptr(ASMState *as, Reg r, int32_t ofs) -{ - if (ofs) { - emit_tai(as, PPCI_ADDI, r, r, ofs); - if (!checki16(ofs)) - emit_tai(as, PPCI_ADDIS, r, r, (ofs + 32768) >> 16); - } -} - -static void emit_spsub(ASMState *as, int32_t ofs) -{ - if (ofs) { - emit_tai(as, PPCI_STWU, RID_TMP, RID_SP, -ofs); - emit_tai(as, PPCI_ADDI, RID_TMP, RID_SP, - CFRAME_SIZE + (as->parent ? as->parent->spadjust : 0)); - } -} - |