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src/lj_emit_ppc.h - luajit-2.0-src
Data types defined
Functions defined
Macros defined
Source code
- 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);
- }
- #define emit_canremat(ref) ((ref) <= REF_BASE)
- 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;
- }
- 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, int32_t k, RegSet allow);
- 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_loadn(as, r, tv) \
- emit_lsptr(as, PPCI_LFD, ((r) & 31), (void *)(tv), RSET_GPR)
- 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))
- #define emit_setvmstate(as, i) UNUSED(i)
- typedef MCode *MCLabel;
- #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 {
- 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;
- }
- }
- #define emit_mr(as, dst, src) \
- emit_asb(as, PPCI_MR, (dst), (src), (src))
- 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);
- }
- 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);
- }
- 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);
- }
- 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));
- }
- }
- 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));
- }
- }
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