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mips: avoid write only variables 

Compiling with GCC 4.6.0 20100925 produced a lot of warnings like:
/src/qemu/target-mips/translate.c: In function 'gen_ld':
/src/qemu/target-mips/translate.c:1039:17: error: variable 'opn' set but not used [-Werror=unused-but-set-variable]

Fix by adding a dummy cast so that the variable is not unused.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2010-10-13 18:38:08 +00:00
parent 577f25a5eb
commit 2abf314ddd
1 changed files with 29 additions and 0 deletions
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29
target-mips/translate.c
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@ -1153,6 +1153,7 @@ static void gen_ld (CPUState *env, DisasContext *ctx, uint32_t opc,
opn = "ll";
break;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %d(%s)", opn, regnames[rt], offset, regnames[base]);
tcg_temp_free(t0);
tcg_temp_free(t1);
@ -1212,6 +1213,7 @@ static void gen_st (DisasContext *ctx, uint32_t opc, int rt,
opn = "swr";
break;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %d(%s)", opn, regnames[rt], offset, regnames[base]);
tcg_temp_free(t0);
tcg_temp_free(t1);
@ -1247,6 +1249,7 @@ static void gen_st_cond (DisasContext *ctx, uint32_t opc, int rt,
opn = "sc";
break;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %d(%s)", opn, regnames[rt], offset, regnames[base]);
tcg_temp_free(t1);
tcg_temp_free(t0);
@ -1312,6 +1315,7 @@ static void gen_flt_ldst (DisasContext *ctx, uint32_t opc, int ft,
generate_exception(ctx, EXCP_RI);
goto out;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %d(%s)", opn, fregnames[ft], offset, regnames[base]);
out:
tcg_temp_free(t0);
@ -1412,6 +1416,7 @@ static void gen_arith_imm (CPUState *env, DisasContext *ctx, uint32_t opc,
break;
#endif
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, " TARGET_FMT_lx, opn, regnames[rt], regnames[rs], uimm);
}
@ -1454,6 +1459,7 @@ static void gen_logic_imm (CPUState *env, uint32_t opc, int rt, int rs, int16_t
opn = "lui";
break;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, " TARGET_FMT_lx, opn, regnames[rt], regnames[rs], uimm);
}
@ -1481,6 +1487,7 @@ static void gen_slt_imm (CPUState *env, uint32_t opc, int rt, int rs, int16_t im
opn = "sltiu";
break;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, " TARGET_FMT_lx, opn, regnames[rt], regnames[rs], uimm);
tcg_temp_free(t0);
}
@ -1572,6 +1579,7 @@ static void gen_shift_imm(CPUState *env, DisasContext *ctx, uint32_t opc,
break;
#endif
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, " TARGET_FMT_lx, opn, regnames[rt], regnames[rs], uimm);
tcg_temp_free(t0);
}
@ -1752,6 +1760,7 @@ static void gen_arith (CPUState *env, DisasContext *ctx, uint32_t opc,
opn = "mul";
break;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, %s", opn, regnames[rd], regnames[rs], regnames[rt]);
}
@ -1789,6 +1798,7 @@ static void gen_cond_move (CPUState *env, uint32_t opc, int rd, int rs, int rt)
tcg_gen_movi_tl(cpu_gpr[rd], 0);
gen_set_label(l1);
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, %s", opn, regnames[rd], regnames[rs], regnames[rt]);
}
@ -1849,6 +1859,7 @@ static void gen_logic (CPUState *env, uint32_t opc, int rd, int rs, int rt)
opn = "xor";
break;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, %s", opn, regnames[rd], regnames[rs], regnames[rt]);
}
@ -1878,6 +1889,7 @@ static void gen_slt (CPUState *env, uint32_t opc, int rd, int rs, int rt)
opn = "sltu";
break;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, %s", opn, regnames[rd], regnames[rs], regnames[rt]);
tcg_temp_free(t0);
tcg_temp_free(t1);
@ -1958,6 +1970,7 @@ static void gen_shift (CPUState *env, DisasContext *ctx, uint32_t opc,
break;
#endif
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, %s", opn, regnames[rd], regnames[rs], regnames[rt]);
tcg_temp_free(t0);
tcg_temp_free(t1);
@ -1997,6 +2010,7 @@ static void gen_HILO (DisasContext *ctx, uint32_t opc, int reg)
opn = "mtlo";
break;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s", opn, regnames[reg]);
}
@ -2229,6 +2243,7 @@ static void gen_muldiv (DisasContext *ctx, uint32_t opc,
generate_exception(ctx, EXCP_RI);
goto out;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s %s", opn, regnames[rs], regnames[rt]);
out:
tcg_temp_free(t0);
@ -2308,6 +2323,7 @@ static void gen_mul_vr54xx (DisasContext *ctx, uint32_t opc,
goto out;
}
gen_store_gpr(t0, rd);
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, %s", opn, regnames[rd], regnames[rs], regnames[rt]);
out:
@ -2348,6 +2364,7 @@ static void gen_cl (DisasContext *ctx, uint32_t opc,
break;
#endif
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s", opn, regnames[rd], regnames[rs]);
tcg_temp_free(t0);
}
@ -2561,6 +2578,7 @@ static void gen_loongson_integer (DisasContext *ctx, uint32_t opc,
#endif
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s", opn, regnames[rd], regnames[rs]);
tcg_temp_free(t0);
tcg_temp_free(t1);
@ -3730,6 +3748,7 @@ static void gen_mfc0 (CPUState *env, DisasContext *ctx, TCGv arg, int reg, int s
default:
goto die;
}
(void)rn; /* avoid a compiler warning */
LOG_DISAS("mfc0 %s (reg %d sel %d)\n", rn, reg, sel);
return;
@ -4320,6 +4339,7 @@ static void gen_mtc0 (CPUState *env, DisasContext *ctx, TCGv arg, int reg, int s
default:
goto die;
}
(void)rn; /* avoid a compiler warning */
LOG_DISAS("mtc0 %s (reg %d sel %d)\n", rn, reg, sel);
/* For simplicity assume that all writes can cause interrupts. */
if (use_icount) {
@ -4892,6 +4912,7 @@ static void gen_dmfc0 (CPUState *env, DisasContext *ctx, TCGv arg, int reg, int
default:
goto die;
}
(void)rn; /* avoid a compiler warning */
LOG_DISAS("dmfc0 %s (reg %d sel %d)\n", rn, reg, sel);
return;
@ -5483,6 +5504,7 @@ static void gen_dmtc0 (CPUState *env, DisasContext *ctx, TCGv arg, int reg, int
default:
goto die;
}
(void)rn; /* avoid a compiler warning */
LOG_DISAS("dmtc0 %s (reg %d sel %d)\n", rn, reg, sel);
/* For simplicity assume that all writes can cause interrupts. */
if (use_icount) {
@ -5943,6 +5965,7 @@ static void gen_cp0 (CPUState *env, DisasContext *ctx, uint32_t opc, int rt, int
generate_exception(ctx, EXCP_RI);
return;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s %d", opn, regnames[rt], rd);
}
#endif /* !CONFIG_USER_ONLY */
@ -6052,6 +6075,7 @@ static void gen_compute_branch1 (CPUState *env, DisasContext *ctx, uint32_t op,
generate_exception (ctx, EXCP_RI);
goto out;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s: cond %02x target " TARGET_FMT_lx, opn,
ctx->hflags, btarget);
ctx->btarget = btarget;
@ -6281,6 +6305,7 @@ static void gen_cp1 (DisasContext *ctx, uint32_t opc, int rt, int fs)
generate_exception (ctx, EXCP_RI);
goto out;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s %s", opn, regnames[rt], fregnames[fs]);
out:
@ -7608,6 +7633,7 @@ static void gen_farith (DisasContext *ctx, enum fopcode op1,
generate_exception (ctx, EXCP_RI);
return;
}
(void)opn; /* avoid a compiler warning */
switch (optype) {
case BINOP:
MIPS_DEBUG("%s %s, %s, %s", opn, fregnames[fd], fregnames[fs], fregnames[ft]);
@ -7720,6 +7746,7 @@ static void gen_flt3_ldst (DisasContext *ctx, uint32_t opc,
break;
}
tcg_temp_free(t0);
(void)opn; (void)store; /* avoid compiler warnings */
MIPS_DEBUG("%s %s, %s(%s)", opn, fregnames[store ? fs : fd],
regnames[index], regnames[base]);
}
@ -7993,6 +8020,7 @@ static void gen_flt3_arith (DisasContext *ctx, uint32_t opc,
generate_exception (ctx, EXCP_RI);
return;
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s, %s, %s", opn, fregnames[fd], fregnames[fr],
fregnames[fs], fregnames[ft]);
}
@ -9971,6 +9999,7 @@ static void gen_ldst_pair (DisasContext *ctx, uint32_t opc, int rd,
break;
#endif
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s, %s, %d(%s)", opn, regnames[rd], offset, regnames[base]);
tcg_temp_free(t0);
tcg_temp_free(t1);