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Diffstat (limited to 'arch/mips/isa/decoder.isa')
-rw-r--r--arch/mips/isa/decoder.isa321
1 files changed, 204 insertions, 117 deletions
diff --git a/arch/mips/isa/decoder.isa b/arch/mips/isa/decoder.isa
index acd00e70d..d6fd90657 100644
--- a/arch/mips/isa/decoder.isa
+++ b/arch/mips/isa/decoder.isa
@@ -66,7 +66,7 @@ decode OPCODE_HI default FailUnimpl::unknown() {
0x3: movn({{ if (Rt != 0) Rd = Rs; }});
}
- format Trap {
+ format WarnUnimpl {
0x4: syscall({{ xc->syscall()}},IsNonSpeculative);
0x5: break({{ }});
0x7: sync({{ }});
@@ -131,12 +131,12 @@ decode OPCODE_HI default FailUnimpl::unknown() {
0x6: decode FUNCTION_LO {
format Trap {
- 0x0: tge({{ }});
- 0x1: tgeu({{ }});
- 0x2: tlt({{ }});
- 0x3: tltu({{ }});
- 0x4: teq({{ }});
- 0x6: tne({{ }});
+ 0x0: tge({{ cond = (Rs.sw >= Rt.sw); }});
+ 0x1: tgeu({{ cond = (Rs.uw >= Rt.uw); }});
+ 0x2: tlt({{ cond = (Rs.sw < Rt.sw); }});
+ 0x3: tltu({{ cond = (Rs.uw >= Rt.uw); }});
+ 0x4: teq({{ cond = (Rs.sw == Rt.sw); }});
+ 0x6: tne({{ cond = (Rs.sw != Rt.sw); }});
}
}
}
@@ -155,12 +155,12 @@ decode OPCODE_HI default FailUnimpl::unknown() {
0x1: decode REGIMM_LO {
format Trap {
- 0x0: tgei({{ }});
- 0x1: tgeiu({{ }});
- 0x2: tlti({{ }});
- 0x3: tltiu({{ }});
- 0x4: teqi({{ }});
- 0x6: tnei({{ }});
+ 0x0: tgei({{ cond = (Rs.sw >= INTIMM; }});
+ 0x1: tgeiu({{ cond = (Rs.uw < INTIMM); }});
+ 0x2: tlti({{ cond = (Rs.sw < INTIMM); }});
+ 0x3: tltiu({{ cond = (Rs.uw < INTIMM); }});
+ 0x4: teqi({{ cond = (Rs.sw == INTIMM); }});
+ 0x6: tnei({{ cond = (Rs.sw != INTIMM); }});
}
}
@@ -176,7 +176,7 @@ decode OPCODE_HI default FailUnimpl::unknown() {
}
0x3: decode REGIMM_LO {
- format Trap {
+ format WarnUnimpl {
0x7: synci({{ }});
}
}
@@ -334,61 +334,69 @@ decode OPCODE_HI default FailUnimpl::unknown() {
0x0: decode RS_HI {
0x0: decode RS_LO {
format FloatOp {
- 0x0: add_fmt({{ }});
- 0x1: sub_fmt({{ }});
- 0x2: mul_fmt({{ }});
- 0x3: div_fmt({{ }});
- 0x4: sqrt_fmt({{ }});
- 0x5: abs_fmt({{ }});
- 0x6: mov_fmt({{ }});
- 0x7: neg_fmt({{ }});
+ 0x0: adds({{ Fd.sf = Fs.sf + Ft.sf;}});
+ 0x1: subs({{ Fd.sf = Fs.sf - Ft.sf;}});
+ 0x2: muls({{ Fd.sf = Fs.sf * Ft.sf;}});
+ 0x3: divs({{ Fd.sf = Fs.sf / Ft.sf;}});
+ 0x4: sqrts({{ Fd.sf = sqrt(Fs.sf);}});
+ 0x5: abss({{ Fd.sf = abs(Fs.sf);}});
+ 0x6: movs({{ Fd.sf = Fs.sf;}});
+ 0x7: negs({{ Fd.sf = -1 * Fs.sf;}});
}
}
0x1: decode RS_LO {
//only legal for 64 bit
format Float64Op {
- 0x0: round_l({{ }});
- 0x1: trunc_l({{ }});
- 0x2: ceil_l({{ }});
- 0x3: floor_l({{ }});
+ 0x0: round_l_s({{ Fd = convert_and_round(Fs.sf,RND_NEAREST,FP_LONG,FP_SINGLE);}});
+ 0x1: trunc_l_s({{ Fd = convert_and_round(Fs.sf,RND_ZERO,FP_LONG,FP_SINGLE);}});
+ 0x2: ceil_l_s({{ Fd = convert_and_round(Fs.sf,RND_UP,FP_LONG,FP_SINGLE);}});
+ 0x3: floor_l_s({{ Fd = convert_and_round(Fs.sf,RND_DOWN,FP_LONG,FP_SINGLE);}});
}
format FloatOp {
- 0x4: round_w({{ }});
- 0x5: trunc_w({{ }});
- 0x6: ceil_w({{ }});
- 0x7: floor_w({{ }});
+ 0x4: round_w_s({{ Fd = convert_and_round(Fs.sf,RND_NEAREST,FP_WORD,FP_SINGLE);}});
+ 0x5: trunc_w_s({{ Fd = convert_and_round(Fs.sf,RND_ZERO,FP_WORD,FP_SINGLE);}});
+ 0x6: ceil_w_s({{ Fd = convert_and_round(Fs.sf,RND_UP,FP_WORD,FP_SINGLE);}});
+ 0x7: floor_w_s({{ Fd = convert_and_round(Fs.sf,RND_DOWN,FP_WORD,FP_SINGLE);}});
}
}
0x2: decode RS_LO {
0x1: decode MOVCF {
format FloatOp {
- 0x0: movf_fmt({{ }});
- 0x1: movt_fmt({{ }});
+ 0x0: movfs({{ if ( FPConditionCode(CC) == 0 ) Fd = Fs; }});
+ 0x1: movts({{ if ( FPConditionCode(CC) == 1 ) Fd = Fs;}});
}
}
format BasicOp {
- 0x2: movz({{ if (Rt == 0) Rd = Rs; }});
- 0x3: movn({{ if (Rt != 0) Rd = Rs; }});
+ 0x2: movzs({{ if (Rt == 0) Fd = Fs; }});
+ 0x3: movns({{ if (Rt != 0) Fd = Fs; }});
}
format Float64Op {
- 0x2: recip({{ }});
- 0x3: rsqrt{{ }});
+ 0x2: recips({{ Fd = 1 / Fs; }});
+ 0x3: rsqrts{{ Fd = 1 / sqrt(Fs); }});
}
}
0x4: decode RS_LO {
- 0x1: cvt_d({{ }});
- 0x4: cvt_w({{ }});
+ 0x1: cvt_d_s({{ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.sf,rnd_mode,FP_DOUBLE,FP_SINGLE);
+ }});
+
+ 0x4: cvt_w_s({{ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.sf,rnd_mode,FP_WORD,FP_SINGLE);
+ }});
//only legal for 64 bit
format Float64Op {
- 0x5: cvt_l({{ }});
- 0x6: cvt_ps({{ }});
+ 0x5: cvt_l_s({{ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.sf,rnd_mode,FP_LONG,FP_SINGLE);
+ }});
+
+ 0x6: cvt_ps_s({{ Fd.df = Fs.df<31:0> | Ft.df<31:0>; }});
}
}
}
@@ -397,62 +405,72 @@ decode OPCODE_HI default FailUnimpl::unknown() {
0x1: decode RS_HI {
0x0: decode RS_LO {
format FloatOp {
- 0x0: add_fmt({{ }});
- 0x1: sub_fmt({{ }});
- 0x2: mul_fmt({{ }});
- 0x3: div_fmt({{ }});
- 0x4: sqrt_fmt({{ }});
- 0x5: abs_fmt({{ }});
- 0x6: mov_fmt({{ }});
- 0x7: neg_fmt({{ }});
+ 0x0: addd({{ Fd.df = Fs.df + Ft.df;}});
+ 0x1: subd({{ Fd.df = Fs.df - Ft.df;}});
+ 0x2: muld({{ Fd.df = Fs.df * Ft.df;}});
+ 0x3: divd({{ Fd.df = Fs.df / Ft.df;}});
+ 0x4: sqrtd({{ Fd.df = sqrt(Fs.df);}});
+ 0x5: absd({{ Fd.df = abs(Fs.df);}});
+ 0x6: movd({{ Fd.df = Fs.df;}});
+ 0x7: negd({{ Fd.df = -1 * Fs.df;}});
}
}
0x1: decode RS_LO {
//only legal for 64 bit
format FloatOp64 {
- 0x0: round_l({{ }});
- 0x1: trunc_l({{ }});
- 0x2: ceil_l({{ }});
- 0x3: floor_l({{ }});
+ 0x0: round_l_d({{ Fd = convert_and_round(Fs.df,RND_NEAREST,FP_LONG,FP_DOUBLE); }});
+ 0x1: trunc_l_d({{ Fd = convert_and_round(Fs.df,RND_ZERO,FP_LONG,FP_DOUBLE);}});
+ 0x2: ceil_l_d({{ Fd = convert_and_round(Fs.df,RND_UP,FP_LONG,FP_DOUBLE);}});
+ 0x3: floor_l_d({{ Fd = convert_and_round(Fs.df,RND_DOWN,FP_LONG,FP_DOUBLE);}});
}
format FloatOp {
- 0x4: round_w({{ }});
- 0x5: trunc_w({{ }});
- 0x6: ceil_w({{ }});
- 0x7: floor_w({{ }});
+ 0x4: round_w_d({{ Fd = convert_and_round(Fs.df,RND_NEAREST,FP_LONG,FP_DOUBLE); }});
+ 0x5: trunc_w_d({{ Fd = convert_and_round(Fs.df,RND_ZERO,FP_LONG,FP_DOUBLE); }});
+ 0x6: ceil_w_d({{ Fd = convert_and_round(Fs.df,RND_UP,FP_LONG,FP_DOUBLE); }});
+ 0x7: floor_w_d({{ Fd = convert_and_round(Fs.df,RND_DOWN,FP_LONG,FP_DOUBLE); }});
}
}
0x2: decode RS_LO {
0x1: decode MOVCF {
format FloatOp {
- 0x0: movf_fmt({{ }});
- 0x1: movt_fmt({{ }});
+ 0x0: movfd({{ if (FPConditionCode(CC) == 0) Fd.df = Fs.df; }});
+ 0x1: movtd({{ if (FPConditionCode(CC) == 1) Fd.df = Fs.df; }});
}
}
format BasicOp {
- 0x2: movz({{ if (Rt == 0) Rd = Rs; }});
- 0x3: movn({{ if (Rt != 0) Rd = Rs; }});
+ 0x2: movz({{ if (Rt == 0) Fd.df = Fs.df; }});
+ 0x3: movn({{ if (Rt != 0) Fd.df = Fs.df; }});
}
format FloatOp64 {
- 0x5: recip({{ }});
- 0x6: rsqrt{{ }});
+ 0x5: recipd({{ Fd.df = 1 / Fs.df}});
+ 0x6: rsqrtd{{ Fd.df = 1 / sqrt(Fs.df) }});
}
}
0x4: decode RS_LO {
format FloatOp {
- 0x0: cvt_s({{ }});
- 0x4: cvt_w({{ }});
+ 0x0: cvt_s_d({{
+ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.df,rnd_mode,FP_SINGLE,FP_DOUBLE);
+ }});
+
+ 0x4: cvt_w_d({{
+ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.df,rnd_mode,FP_WORD,FP_DOUBLE);
+ }});
}
//only legal for 64 bit
format FloatOp64 {
- 0x5: cvt_l({{ }});
+ 0x5: cvt_l_d({{
+ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.df,rnd_mode,FP_LONG,FP_DOUBLE);
+ }});
}
}
}
@@ -460,8 +478,15 @@ decode OPCODE_HI default FailUnimpl::unknown() {
//Table A-16 MIPS32 COP1 Encoding of Function Field When rs=W
0x4: decode FUNCTION {
format FloatOp {
- 0x10: cvt_s({{ }});
- 0x10: cvt_d({{ }});
+ 0x10: cvt_s({{
+ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.df,rnd_mode,FP_SINGLE,FP_WORD);
+ }});
+
+ 0x10: cvt_d({{
+ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.df,rnd_mode,FP_DOUBLE,FP_WORD);
+ }});
}
}
@@ -470,8 +495,15 @@ decode OPCODE_HI default FailUnimpl::unknown() {
//are enabled."
0x5: decode FUNCTION_HI {
format FloatOp {
- 0x10: cvt_s({{ }});
- 0x11: cvt_d({{ }});
+ 0x10: cvt_s_l({{
+ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.df,rnd_mode,FP_SINGLE,FP_LONG);
+ }});
+
+ 0x11: cvt_d_l({{
+ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.df,rnd_mode,FP_DOUBLE,FP_LONG);
+ }});
}
}
@@ -481,36 +513,65 @@ decode OPCODE_HI default FailUnimpl::unknown() {
0x6: decode RS_HI {
0x0: decode RS_LO {
format FloatOp64 {
- 0x0: add_fmt({{ }});
- 0x1: sub_fmt({{ }});
- 0x2: mul_fmt({{ }});
- 0x5: abs_fmt({{ }});
- 0x6: mov_fmt({{ }});
- 0x7: neg_fmt({{ }});
+ 0x0: addps({{ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = Fs.df + Ft.df;
+ }});
+
+ 0x1: subps({{ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = Fs.df - Ft.df;
+ }});
+
+ 0x2: mulps({{ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = Fs.df * Ft.df;
+ }});
+
+ 0x5: absps({{ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = abs(Fs.df);
+ }});
+
+ 0x6: movps({{ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = Fs<31:0> | Ft<31:0>;
+ }});
+
+ 0x7: negps({{ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = -1 * Fs.df;
+ }});
}
}
0x2: decode RS_LO {
0x1: decode MOVCF {
format FloatOp64 {
- 0x0: movf_fmt({{ }});
- 0x1: movt_fmt({{ }});
+ 0x0: movfps({{ if ( FPConditionCode(CC) == 0) Fd = Fs;}})
+ 0x1: movtps({{ if ( FPConditionCode(CC) == 0) Fd = Fs;}})
}
}
}
0x4: decode RS_LO {
- 0x0: FloatOp64::cvt_s_pu({{ }});
+ 0x0: FloatOp64::cvt_s_pu({{
+ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.df,rnd_mode,FP_DOUBLE,FP_PS_HI);
+ }});
}
0x5: decode RS_LO {
format FloatOp64 {
- 0x0: cvt_s_pl({{ }});
- 0x4: pll_s_pl({{ }});
- 0x5: plu_s_pl({{ }});
- 0x6: pul_s_pl({{ }});
- 0x7: puu_s_pl({{ }});
+ 0x0: cvt_s_pl({{
+ int rnd_mode = xc->miscRegs.fcsr;
+ Fd = convert_and_round(Fs.df,rnd_mode,FP_SINGLE,FP_PS_LO);
+ }});
+ 0x4: pll({{ Fd.df = Fs<31:0> | Ft<31:0>}});
+ 0x5: plu({{ Fd.df = Fs<31:0> | Ft<63:32>}});
+ 0x6: pul({{ Fd.df = Fs<63:32> | Ft<31:0>}});
+ 0x7: puu({{ Fd.df = Fs<63:32 | Ft<63:32>}});
}
}
}
@@ -532,14 +593,14 @@ decode OPCODE_HI default FailUnimpl::unknown() {
0x1: decode ND {
0x0: decode TF {
- format Branch {
+ format WarnUnimpl {
0x0: bc2f({{ cond = (xc->miscRegs.cop2cc == 0); }}, COP2);
0x1: bc2t({{ cond = (xc->miscRegs.cop2cc == 1); }}, COP2}});
}
}
0x1: decode TF {
- format Branch {
+ format WarnUnimpl {
0x0: bc2fl({{ cond = (xc->miscRegs.cop2cc == 0); }}, COP2}});
0x1: bc2tl({{ cond = (xc->miscRegs.cop2cc == 1); }}, COP2}});
}
@@ -554,46 +615,70 @@ decode OPCODE_HI default FailUnimpl::unknown() {
0x3: decode FUNCTION_HI {
0x0: decode FUNCTION_LO {
format Memory {
- 0x0: lwxc1({{ }});
- 0x1: ldxc1({{ }});
- 0x5: luxc1({{ }});
+ 0x0: lwxc1({{ EA = Rs + Rt; }},{{ Ft<31:0> = Mem.uf; }});
+ 0x1: ldxc1({{ EA = Rs + Rt; }},{{ Ft<63:0> = Mem.df; }});
+ 0x5: luxc1({{ //Need to make EA<2:0> = 0
+ EA = Rs + Rt;
+ }},
+ {{ Ft<31:0> = Mem.df; }});
}
}
0x1: decode FUNCTION_LO {
format Memory {
- 0x0: swxc1({{ }});
- 0x1: sdxc1({{ }});
- 0x5: suxc1({{ }});
+ 0x0: swxc1({{ EA = Rs + Rt; }},{{ Mem.uf = Ft<31:0>; }});
+ 0x1: sdxc1({{ EA = Rs + Rt; }},{{ Mem.uf = Ft<63:0>}});
+ 0x5: suxc1({{ //Need to make EA<2:0> = 0
+ EA = Rs + Rt;
+ }},
+ {{ Mem.df = Ft<63:0>;}});
0x7: prefx({{ }});
}
}
format FloatOp {
- 0x3: alnv_ps({{ }});
+ 0x3: WarnUnimpl::alnv_ps({{ }});
- 0x4: decode FUNCTION_LO {
- 0x0: madd_s({{ }});
- 0x1: madd_d({{ }});
- 0x6: madd_ps({{ }});
- }
+ format BasicOp {
+ 0x4: decode FUNCTION_LO {
+ 0x0: madd_s({{ Fd.sf = (Fs.sf * Fs.sf) + Fr.sf; }});
+ 0x1: madd_d({{ Fd.df = (Fs.df * Fs.df) + Fr.df; }});
+ 0x6: madd_ps({{
+ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = (Fs.df * Fs.df) + Fr.df;
+ }});
+ }
- 0x5: decode FUNCTION_LO {
- 0x0: msub_s({{ }});
- 0x1: msub_d({{ }});
- 0x6: msub_ps({{ }});
- }
+ 0x5: decode FUNCTION_LO {
+ 0x0: msub_s({{ Fd.sf = (Fs.sf * Fs.sf) - Fr.sf; }});
+ 0x1: msub_d({{ Fd.df = (Fs.df * Fs.df) - Fr.df; }});
+ 0x6: msub_ps({{
+ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = (Fs.df * Fs.df) - Fr.df;
+ }});
+ }
- 0x6: decode FUNCTION_LO {
- 0x0: nmadd_s({{ }});
- 0x1: nmadd_d({{ }});
- 0x6: nmadd_ps({{ }});
- }
+ 0x6: decode FUNCTION_LO {
+ 0x0: nmadd_s({{ Fd.sf = (-1 * Fs.sf * Fs.sf) - Fr.sf; }});
+ 0x1: nmadd_d({{ Fd.df = (-1 * Fs.df * Fs.df) + Fr.df; }});
+ 0x6: nmadd_ps({{
+ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = (-1 * Fs.df * Fs.df) + Fr.df;
+ }});
+ }
- 0x7: decode FUNCTION_LO {
- 0x0: nmsub_s({{ }});
- 0x1: nmsub_d({{ }});
- 0x6: nmsub_ps({{ }});
+ 0x7: decode FUNCTION_LO {
+ 0x0: nmsub_s({{ Fd.sf = (-1 * Fs.sf * Fs.sf) - Fr.sf; }});
+ 0x1: nmsub_d({{ Fd.df = (-1 * Fs.df * Fs.df) - Fr.df; }});
+ 0x6: nmsub_ps({{
+ //Must Check for Exception Here... Supposed to Operate on Upper and
+ //Lower Halves Independently but we take simulator shortcut
+ Fd.df = (-1 * Fs.df * Fs.df) + Fr.df;
+ }});
+ }
}
}
}
@@ -689,15 +774,17 @@ decode OPCODE_HI default FailUnimpl::unknown() {
//Table A-10 MIPS32 BSHFL Encoding of sa Field
0x4: decode SA {
+
+ 0x02: WarnUnimpl::wsbh({{ }});
+
format BasicOp {
- 0x02: wsbh({{ }});
0x10: seb({{ Rd.sw = /* sext32(Rt<7>,24) | */ Rt<7:0>}});
0x18: seh({{ Rd.sw = /* sext32(Rt<15>,16) | */ Rt<15:0>}});
}
}
0x6: decode FUNCTION_LO {
- 0x7: BasicOp::rdhwr({{ }});
+ 0x7: BasicOp::rdhwr({{ Rt = xc->hwRegs[RD];}});
}
}
};
@@ -726,24 +813,24 @@ decode OPCODE_HI default FailUnimpl::unknown() {
};
format WarnUnimpl {
- 0x4: reserved({{ }});
- 0x5: reserved({{ }});
0x7: cache({{ }});
};
};
0x6: decode OPCODE_LO default FailUnimpl::reserved() {
+ 0x0: WarnUnimpl::ll({{ }});
+
format Memory {
- 0x0: ll({{ }});
0x1: lwc1({{ EA = Rs + disp; }},{{ Ft<31:0> = Mem.uf; }});
0x5: ldc1({{ EA = Rs + disp; }},{{ Ft<63:0> = Mem.df; }});
};
};
0x7: decode OPCODE_LO default FailUnimpl::reserved() {
+ 0x0: WarnUnimpl::sc({{ }});
+
format Memory {
- 0x0: sc({{ }});
0x1: swc1({{ EA = Rs + disp; }},{{ Mem.uf = Ft<31:0>; }});
0x5: sdc1({{ EA = Rs + disp; }},{{ Mem.df = Ft<63:0>; }});
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 19:50:38 +0000