| Message ID | 1468861517-2508-4-git-send-email-nikunj@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> writes: > ISA 3.0 instruction for adding immediate value with next instruction > address and return the result in the target register. > > Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> > Reviewed-by: David Gibson <david@gibson.dropbear.id.au> > --- > target-ppc/translate.c | 27 +++++++++++++++++++++++++++ > 1 file changed, 27 insertions(+) > > diff --git a/target-ppc/translate.c b/target-ppc/translate.c > index 92030b6..93c7c66 100644 > --- a/target-ppc/translate.c > +++ b/target-ppc/translate.c > @@ -432,6 +432,20 @@ static inline uint32_t name(uint32_t opcode) \ > return (((opcode >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \ > ((opcode >> (shift2)) & ((1 << (nb2)) - 1)); \ > } > + > +#define EXTRACT_HELPER_DXFORM(name, \ > + d0_bits, shift_op_d0, shift_d0, \ > + d1_bits, shift_op_d1, shift_d1, \ > + d2_bits, shift_op_d2, shift_d2) \ > +static inline int16_t name(uint32_t opcode) \ > +{ \ > + return \ > + (((opcode >> (shift_op_d0)) & ((1 << (d0_bits)) - 1)) << (shift_d0)) | \ > + (((opcode >> (shift_op_d1)) & ((1 << (d1_bits)) - 1)) << (shift_d1)) | \ > + (((opcode >> (shift_op_d2)) & ((1 << (d2_bits)) - 1)) << (shift_d2)); \ > +} > + > + > /* Opcode part 1 */ > EXTRACT_HELPER(opc1, 26, 6); > /* Opcode part 2 */ > @@ -501,6 +515,9 @@ EXTRACT_HELPER(FPL, 25, 1); > EXTRACT_HELPER(FPFLM, 17, 8); > EXTRACT_HELPER(FPW, 16, 1); > > +/* addpcis */ > +EXTRACT_HELPER_DXFORM(DX, 10, 6, 6, 5, 16, 1, 1, 0, 0) > + > /*** Jump target decoding ***/ > /* Immediate address */ > static inline target_ulong LI(uint32_t opcode) > @@ -984,6 +1001,15 @@ static void gen_addis(DisasContext *ctx) > } > } > > +/* addpcis */ > +static void gen_addpcis(DisasContext *ctx) > +{ > + target_long d = DX(ctx->opcode); I found a bug here, d has to be shifted by 16. Will update the patch accordingly. > + > + tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], ctx->nip); > + tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rD(ctx->opcode)], d); > +} > + Regards Nikunj
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 92030b6..93c7c66 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -432,6 +432,20 @@ static inline uint32_t name(uint32_t opcode) \ return (((opcode >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \ ((opcode >> (shift2)) & ((1 << (nb2)) - 1)); \ } + +#define EXTRACT_HELPER_DXFORM(name, \ + d0_bits, shift_op_d0, shift_d0, \ + d1_bits, shift_op_d1, shift_d1, \ + d2_bits, shift_op_d2, shift_d2) \ +static inline int16_t name(uint32_t opcode) \ +{ \ + return \ + (((opcode >> (shift_op_d0)) & ((1 << (d0_bits)) - 1)) << (shift_d0)) | \ + (((opcode >> (shift_op_d1)) & ((1 << (d1_bits)) - 1)) << (shift_d1)) | \ + (((opcode >> (shift_op_d2)) & ((1 << (d2_bits)) - 1)) << (shift_d2)); \ +} + + /* Opcode part 1 */ EXTRACT_HELPER(opc1, 26, 6); /* Opcode part 2 */ @@ -501,6 +515,9 @@ EXTRACT_HELPER(FPL, 25, 1); EXTRACT_HELPER(FPFLM, 17, 8); EXTRACT_HELPER(FPW, 16, 1); +/* addpcis */ +EXTRACT_HELPER_DXFORM(DX, 10, 6, 6, 5, 16, 1, 1, 0, 0) + /*** Jump target decoding ***/ /* Immediate address */ static inline target_ulong LI(uint32_t opcode) @@ -984,6 +1001,15 @@ static void gen_addis(DisasContext *ctx) } } +/* addpcis */ +static void gen_addpcis(DisasContext *ctx) +{ + target_long d = DX(ctx->opcode); + + tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], ctx->nip); + tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rD(ctx->opcode)], d); +} + static inline void gen_op_arith_divw(DisasContext *ctx, TCGv ret, TCGv arg1, TCGv arg2, int sign, int compute_ov) { @@ -9877,6 +9903,7 @@ GEN_HANDLER(addi, 0x0E, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER(addic, 0x0C, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER2(addic_, "addic.", 0x0D, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER(addis, 0x0F, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), +GEN_HANDLER_E(addpcis, 0x13, 0x2, 0xFF, 0x00000000, PPC_NONE, PPC2_ISA300), GEN_HANDLER(mulhw, 0x1F, 0x0B, 0x02, 0x00000400, PPC_INTEGER), GEN_HANDLER(mulhwu, 0x1F, 0x0B, 0x00, 0x00000400, PPC_INTEGER), GEN_HANDLER(mullw, 0x1F, 0x0B, 0x07, 0x00000000, PPC_INTEGER),