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target-tricore: Add instructions of SC opcode format
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Add instructions of SC opcode format.
Add helper for begin interrupt service routine.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-id: 1409572800-4116-14-git-send-email-kbastian@mail.uni-paderborn.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@bkoppelmann @pm215
bkoppelmann authored and pm215 committed Sep 1, 2014
1 parent a47b50d commit 5de9351
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Showing 3 changed files with 108 additions and 0 deletions.
1 change: 1 addition & 0 deletions target-tricore/helper.h
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Expand Up @@ -21,3 +21,4 @@ DEF_HELPER_3(sub_ssov, i32, env, i32, i32)
/* CSA */
DEF_HELPER_2(call, void, env, i32)
DEF_HELPER_1(ret, void, env)
DEF_HELPER_2(bisr, void, env, i32)
59 changes: 59 additions & 0 deletions target-tricore/op_helper.c
View file
Expand Up @@ -122,6 +122,28 @@ static void save_context_upper(CPUTriCoreState *env, int ea,

}

static void save_context_lower(CPUTriCoreState *env, int ea,
target_ulong *new_FCX)
{
*new_FCX = cpu_ldl_data(env, ea);
cpu_stl_data(env, ea, env->PCXI);
cpu_stl_data(env, ea+4, env->PSW);
cpu_stl_data(env, ea+8, env->gpr_a[2]);
cpu_stl_data(env, ea+12, env->gpr_a[3]);
cpu_stl_data(env, ea+16, env->gpr_d[0]);
cpu_stl_data(env, ea+20, env->gpr_d[1]);
cpu_stl_data(env, ea+24, env->gpr_d[2]);
cpu_stl_data(env, ea+28, env->gpr_d[3]);
cpu_stl_data(env, ea+32, env->gpr_a[4]);
cpu_stl_data(env, ea+36, env->gpr_a[5]);
cpu_stl_data(env, ea+40, env->gpr_a[6]);
cpu_stl_data(env, ea+44, env->gpr_a[7]);
cpu_stl_data(env, ea+48, env->gpr_d[4]);
cpu_stl_data(env, ea+52, env->gpr_d[5]);
cpu_stl_data(env, ea+56, env->gpr_d[6]);
cpu_stl_data(env, ea+60, env->gpr_d[7]);
}

static void restore_context_upper(CPUTriCoreState *env, int ea,
target_ulong *new_PCXI, target_ulong *new_PSW)
{
Expand Down Expand Up @@ -243,6 +265,43 @@ void helper_ret(CPUTriCoreState *env)
}
}

void helper_bisr(CPUTriCoreState *env, uint32_t const9)
{
target_ulong tmp_FCX;
target_ulong ea;
target_ulong new_FCX;

if (env->FCX == 0) {
/* FCU trap */
}

tmp_FCX = env->FCX;
ea = ((env->FCX & 0xf0000) << 12) + ((env->FCX & 0xffff) << 6);

save_context_lower(env, ea, &new_FCX);

/* PCXI.PCPN = ICR.CCPN */
env->PCXI = (env->PCXI & 0xffffff) +
((env->ICR & MASK_ICR_CCPN) << 24);
/* PCXI.PIE = ICR.IE */
env->PCXI = ((env->PCXI & ~MASK_PCXI_PIE) +
((env->ICR & MASK_ICR_IE) << 15));
/* PCXI.UL = 0 */
env->PCXI &= ~(MASK_PCXI_UL);
/* PCXI[19: 0] = FCX[19: 0] */
env->PCXI = (env->PCXI & 0xfff00000) + (env->FCX & 0xfffff);
/* FXC[19: 0] = new_FCX[19: 0] */
env->FCX = (env->FCX & 0xfff00000) + (new_FCX & 0xfffff);
/* ICR.IE = 1 */
env->ICR |= MASK_ICR_IE;

env->ICR |= const9; /* ICR.CCPN = const9[7: 0];*/

if (tmp_FCX == env->LCX) {
/* FCD trap */
}
}

static inline void QEMU_NORETURN do_raise_exception_err(CPUTriCoreState *env,
uint32_t exception,
int error_code,
Expand Down
48 changes: 48 additions & 0 deletions target-tricore/translate.c
View file
Expand Up @@ -680,6 +680,42 @@ static void decode_ssr_opc(DisasContext *ctx, int op1)
}
}

static void decode_sc_opc(DisasContext *ctx, int op1)
{
int32_t const16;

const16 = MASK_OP_SC_CONST8(ctx->opcode);

switch (op1) {
case OPC1_16_SC_AND:
tcg_gen_andi_tl(cpu_gpr_d[15], cpu_gpr_d[15], const16);
break;
case OPC1_16_SC_BISR:
gen_helper_1arg(bisr, const16 & 0xff);
break;
case OPC1_16_SC_LD_A:
gen_offset_ld(ctx, cpu_gpr_a[15], cpu_gpr_a[10], const16 * 4, MO_LESL);
break;
case OPC1_16_SC_LD_W:
gen_offset_ld(ctx, cpu_gpr_d[15], cpu_gpr_a[10], const16 * 4, MO_LESL);
break;
case OPC1_16_SC_MOV:
tcg_gen_movi_tl(cpu_gpr_d[15], const16);
break;
case OPC1_16_SC_OR:
tcg_gen_ori_tl(cpu_gpr_d[15], cpu_gpr_d[15], const16);
break;
case OPC1_16_SC_ST_A:
gen_offset_st(ctx, cpu_gpr_a[15], cpu_gpr_a[10], const16 * 4, MO_LESL);
break;
case OPC1_16_SC_ST_W:
gen_offset_st(ctx, cpu_gpr_d[15], cpu_gpr_a[10], const16 * 4, MO_LESL);
break;
case OPC1_16_SC_SUB_A:
tcg_gen_subi_tl(cpu_gpr_a[10], cpu_gpr_a[10], const16);
break;
}
}
static void decode_16Bit_opc(CPUTriCoreState *env, DisasContext *ctx)
{
int op1;
Expand Down Expand Up @@ -816,6 +852,18 @@ static void decode_16Bit_opc(CPUTriCoreState *env, DisasContext *ctx)
address = MASK_OP_SBR_DISP4(ctx->opcode);
gen_compute_branch(ctx, op1, r1, 0, 0, address);
break;
/* SC-format */
case OPC1_16_SC_AND:
case OPC1_16_SC_BISR:
case OPC1_16_SC_LD_A:
case OPC1_16_SC_LD_W:
case OPC1_16_SC_MOV:
case OPC1_16_SC_OR:
case OPC1_16_SC_ST_A:
case OPC1_16_SC_ST_W:
case OPC1_16_SC_SUB_A:
decode_sc_opc(ctx, op1);
break;
}
}

Expand Down

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