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X-Received-From: 2a00:1450:4864:20::443 Subject: [Qemu-devel] [PATCH 12/19] target/hppa: Convert direct and indirect branches X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: deller@gmx.de, svens@stackframe.org Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Richard Henderson --- target/hppa/translate.c | 131 +++++++++------------------------------ target/hppa/insns.decode | 34 +++++++++- 2 files changed, 63 insertions(+), 102 deletions(-) -- 2.17.2 diff --git a/target/hppa/translate.c b/target/hppa/translate.c index 83d898212e..26b5cd205b 100644 --- a/target/hppa/translate.c +++ b/target/hppa/translate.c @@ -895,15 +895,6 @@ static target_sreg assemble_16a(uint32_t insn) return x << 2; } -static target_sreg assemble_17(uint32_t insn) -{ - target_ureg x = -(target_ureg)(insn & 1); - x = (x << 5) | extract32(insn, 16, 5); - x = (x << 1) | extract32(insn, 2, 1); - x = (x << 10) | extract32(insn, 3, 10); - return x << 2; -} - static target_sreg assemble_21(uint32_t insn) { target_ureg x = -(target_ureg)(insn & 1); @@ -914,15 +905,6 @@ static target_sreg assemble_21(uint32_t insn) return x << 11; } -static target_sreg assemble_22(uint32_t insn) -{ - target_ureg x = -(target_ureg)(insn & 1); - x = (x << 10) | extract32(insn, 16, 10); - x = (x << 1) | extract32(insn, 2, 1); - x = (x << 10) | extract32(insn, 3, 10); - return x << 2; -} - /* The parisc documentation describes only the general interpretation of the conditions, without describing their exact implementation. The interpretations do not stand up well when considering ADD,C and SUB,B. @@ -3546,11 +3528,8 @@ static bool trans_depwi_sar(DisasContext *ctx, arg_depwi_sar *a) return do_depw_sar(ctx, a->t, a->c, a->nz, a->clen, load_const(ctx, a->i)); } -static bool trans_be(DisasContext *ctx, uint32_t insn, bool is_l) +static bool trans_be(DisasContext *ctx, arg_be *a) { - unsigned n = extract32(insn, 1, 1); - unsigned b = extract32(insn, 21, 5); - target_sreg disp = assemble_17(insn); TCGv_reg tmp; #ifdef CONFIG_USER_ONLY @@ -3562,29 +3541,28 @@ static bool trans_be(DisasContext *ctx, uint32_t insn, bool is_l) /* Since we don't implement spaces, just branch. Do notice the special case of "be disp(*,r0)" using a direct branch to disp, so that we can goto_tb to the TB containing the syscall. */ - if (b == 0) { - return do_dbranch(ctx, disp, is_l ? 31 : 0, n); + if (a->b == 0) { + return do_dbranch(ctx, a->disp, a->l, a->n); } #else - int sp = assemble_sr3(insn); nullify_over(ctx); #endif tmp = get_temp(ctx); - tcg_gen_addi_reg(tmp, load_gpr(ctx, b), disp); + tcg_gen_addi_reg(tmp, load_gpr(ctx, a->b), a->disp); tmp = do_ibranch_priv(ctx, tmp); #ifdef CONFIG_USER_ONLY - return do_ibranch(ctx, tmp, is_l ? 31 : 0, n); + return do_ibranch(ctx, tmp, a->l, a->n); #else TCGv_i64 new_spc = tcg_temp_new_i64(); - load_spr(ctx, new_spc, sp); - if (is_l) { + load_spr(ctx, new_spc, a->sp); + if (a->l) { copy_iaoq_entry(cpu_gr[31], ctx->iaoq_n, ctx->iaoq_n_var); tcg_gen_mov_i64(cpu_sr[0], cpu_iasq_f); } - if (n && use_nullify_skip(ctx)) { + if (a->n && use_nullify_skip(ctx)) { tcg_gen_mov_reg(cpu_iaoq_f, tmp); tcg_gen_addi_reg(cpu_iaoq_b, cpu_iaoq_f, 4); tcg_gen_mov_i64(cpu_iasq_f, new_spc); @@ -3596,7 +3574,7 @@ static bool trans_be(DisasContext *ctx, uint32_t insn, bool is_l) } tcg_gen_mov_reg(cpu_iaoq_b, tmp); tcg_gen_mov_i64(cpu_iasq_b, new_spc); - nullify_set(ctx, n); + nullify_set(ctx, a->n); } tcg_temp_free_i64(new_spc); tcg_gen_lookup_and_goto_ptr(); @@ -3605,22 +3583,14 @@ static bool trans_be(DisasContext *ctx, uint32_t insn, bool is_l) #endif } -static bool trans_bl(DisasContext *ctx, uint32_t insn, const DisasInsn *di) +static bool trans_bl(DisasContext *ctx, arg_bl *a) { - unsigned n = extract32(insn, 1, 1); - unsigned link = extract32(insn, 21, 5); - target_sreg disp = assemble_17(insn); - - do_dbranch(ctx, iaoq_dest(ctx, disp), link, n); - return true; + return do_dbranch(ctx, iaoq_dest(ctx, a->disp), a->l, a->n); } -static bool trans_b_gate(DisasContext *ctx, uint32_t insn, const DisasInsn *di) +static bool trans_b_gate(DisasContext *ctx, arg_b_gate *a) { - unsigned n = extract32(insn, 1, 1); - unsigned link = extract32(insn, 21, 5); - target_sreg disp = assemble_17(insn); - target_ureg dest = iaoq_dest(ctx, disp); + target_ureg dest = iaoq_dest(ctx, a->disp); /* Make sure the caller hasn't done something weird with the queue. * ??? This is not quite the same as the PSW[B] bit, which would be @@ -3659,65 +3629,44 @@ static bool trans_b_gate(DisasContext *ctx, uint32_t insn, const DisasInsn *di) } #endif - do_dbranch(ctx, dest, link, n); - return true; + return do_dbranch(ctx, dest, a->l, a->n); } -static bool trans_bl_long(DisasContext *ctx, uint32_t insn, const DisasInsn *di) +static bool trans_blr(DisasContext *ctx, arg_blr *a) { - unsigned n = extract32(insn, 1, 1); - target_sreg disp = assemble_22(insn); - - do_dbranch(ctx, iaoq_dest(ctx, disp), 2, n); - return true; -} - -static bool trans_blr(DisasContext *ctx, uint32_t insn, const DisasInsn *di) -{ - unsigned n = extract32(insn, 1, 1); - unsigned rx = extract32(insn, 16, 5); - unsigned link = extract32(insn, 21, 5); TCGv_reg tmp = get_temp(ctx); - tcg_gen_shli_reg(tmp, load_gpr(ctx, rx), 3); + tcg_gen_shli_reg(tmp, load_gpr(ctx, a->x), 3); tcg_gen_addi_reg(tmp, tmp, ctx->iaoq_f + 8); /* The computation here never changes privilege level. */ - do_ibranch(ctx, tmp, link, n); - return true; + return do_ibranch(ctx, tmp, a->l, a->n); } -static bool trans_bv(DisasContext *ctx, uint32_t insn, const DisasInsn *di) +static bool trans_bv(DisasContext *ctx, arg_bv *a) { - unsigned n = extract32(insn, 1, 1); - unsigned rx = extract32(insn, 16, 5); - unsigned rb = extract32(insn, 21, 5); TCGv_reg dest; - if (rx == 0) { - dest = load_gpr(ctx, rb); + if (a->x == 0) { + dest = load_gpr(ctx, a->b); } else { dest = get_temp(ctx); - tcg_gen_shli_reg(dest, load_gpr(ctx, rx), 3); - tcg_gen_add_reg(dest, dest, load_gpr(ctx, rb)); + tcg_gen_shli_reg(dest, load_gpr(ctx, a->x), 3); + tcg_gen_add_reg(dest, dest, load_gpr(ctx, a->b)); } dest = do_ibranch_priv(ctx, dest); - do_ibranch(ctx, dest, 0, n); - return true; + return do_ibranch(ctx, dest, 0, a->n); } -static bool trans_bve(DisasContext *ctx, uint32_t insn, const DisasInsn *di) +static bool trans_bve(DisasContext *ctx, arg_bve *a) { - unsigned n = extract32(insn, 1, 1); - unsigned rb = extract32(insn, 21, 5); - unsigned link = extract32(insn, 13, 1) ? 2 : 0; TCGv_reg dest; #ifdef CONFIG_USER_ONLY - dest = do_ibranch_priv(ctx, load_gpr(ctx, rb)); - do_ibranch(ctx, dest, link, n); + dest = do_ibranch_priv(ctx, load_gpr(ctx, a->b)); + return do_ibranch(ctx, dest, a->l, a->n); #else nullify_over(ctx); - dest = do_ibranch_priv(ctx, load_gpr(ctx, rb)); + dest = do_ibranch_priv(ctx, load_gpr(ctx, a->b)); copy_iaoq_entry(cpu_iaoq_f, ctx->iaoq_b, cpu_iaoq_b); if (ctx->iaoq_b == -1) { @@ -3725,26 +3674,16 @@ static bool trans_bve(DisasContext *ctx, uint32_t insn, const DisasInsn *di) } copy_iaoq_entry(cpu_iaoq_b, -1, dest); tcg_gen_mov_i64(cpu_iasq_b, space_select(ctx, 0, dest)); - if (link) { - copy_iaoq_entry(cpu_gr[link], ctx->iaoq_n, ctx->iaoq_n_var); + if (a->l) { + copy_iaoq_entry(cpu_gr[a->l], ctx->iaoq_n, ctx->iaoq_n_var); } - nullify_set(ctx, n); + nullify_set(ctx, a->n); tcg_gen_lookup_and_goto_ptr(); ctx->base.is_jmp = DISAS_NORETURN; return nullify_end(ctx); #endif - return true; } -static const DisasInsn table_branch[] = { - { 0xe8000000u, 0xfc006000u, trans_bl }, /* B,L and B,L,PUSH */ - { 0xe800a000u, 0xfc00e000u, trans_bl_long }, - { 0xe8004000u, 0xfc00fffdu, trans_blr }, - { 0xe800c000u, 0xfc00fffdu, trans_bv }, - { 0xe800d000u, 0xfc00dffcu, trans_bve }, - { 0xe8002000u, 0xfc00e000u, trans_b_gate }, -}; - static bool trans_fop_wew_0c(DisasContext *ctx, uint32_t insn, const DisasInsn *di) { @@ -4422,16 +4361,6 @@ static void translate_one(DisasContext *ctx, uint32_t insn) translate_table(ctx, insn, table_fp_fused); return; - case 0x38: - trans_be(ctx, insn, false); - return; - case 0x39: - trans_be(ctx, insn, true); - return; - case 0x3A: - translate_table(ctx, insn, table_branch); - return; - case 0x04: /* spopn */ case 0x05: /* diag */ case 0x0F: /* product specific */ diff --git a/target/hppa/insns.decode b/target/hppa/insns.decode index 987cb8738b..09e3f288a7 100644 --- a/target/hppa/insns.decode +++ b/target/hppa/insns.decode @@ -24,7 +24,9 @@ %assemble_sr3 13:1 14:2 %assemble_sr3x 13:1 14:2 !function=expand_sr3x -%assemble_12 0:s1 2:1 3:10 !function=expand_shl2 +%assemble_12 0:s1 2:1 3:10 !function=expand_shl2 +%assemble_17 0:s1 16:5 2:1 3:10 !function=expand_shl2 +%assemble_22 0:s1 16:10 2:1 3:10 !function=expand_shl2 %sm_imm 16:10 !function=expand_sm_imm @@ -210,3 +212,33 @@ depw_sar 110101 t:5 r:5 c:3 00 nz:1 00000 clen:5 depw_imm 110101 t:5 r:5 c:3 01 nz:1 cpos:5 clen:5 depwi_sar 110101 t:5 ..... c:3 10 nz:1 00000 clen:5 i=%im5_16 depwi_imm 110101 t:5 ..... c:3 11 nz:1 cpos:5 clen:5 i=%im5_16 + +#### +# Branch External +#### + +&be b l n disp sp +@be ...... b:5 ..... ... ........... n:1 . \ + &be disp=%assemble_17 sp=%assemble_sr3 + +be 111000 ..... ..... ... ........... . . @be l=0 +be 111001 ..... ..... ... ........... . . @be l=31 + +#### +# Branch +#### + +&bl l n disp +@bl ...... l:5 ..... ... ........... n:1 . &bl disp=%assemble_17 + +# B,L and B,L,PUSH +bl 111010 ..... ..... 000 ........... . . @bl +bl 111010 ..... ..... 100 ........... . . @bl +# B,L (long displacement) +bl 111010 ..... ..... 101 ........... n:1 . &bl l=2 \ + disp=%assemble_22 +b_gate 111010 ..... ..... 001 ........... . . @bl +blr 111010 l:5 x:5 010 00000000000 n:1 0 +bv 111010 b:5 x:5 110 00000000000 n:1 0 +bve 111010 b:5 00000 110 10000000000 n:1 - l=0 +bve 111010 b:5 00000 111 10000000000 n:1 - l=2