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target/loongarch: Truncate high 32 bits of address in VA32 mode

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When running in VA32 mode(!LA64 or VA32L[1-3] matching PLV), virtual
address is truncated to 32 bits before address mapping.

Signed-off-by: Jiajie Chen <c@jia.je>
Co-authored-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230822032724.1353391-6-gaosong@loongson.cn>
Message-Id: <20230822071405.35386-10-philmd@linaro.org>
This commit is contained in:
Jiajie Chen 2023-08-22 09:13:55 +02:00 committed by Song Gao
parent 2f6478ffad
commit 7033c0e6dd
No known key found for this signature in database
GPG Key ID: 40A2FFF239263EDF
2 changed files with 20 additions and 2 deletions
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4
target/loongarch/cpu.h
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@ -445,8 +445,12 @@ static inline bool is_va32(CPULoongArchState *env)
static inline void set_pc(CPULoongArchState *env, uint64_t value) static inline void set_pc(CPULoongArchState *env, uint64_t value)
{ {
if (is_va32(env)) {
env->pc = (uint32_t)value;
} else {
env->pc = value; env->pc = value;
} }
}
/* /*
* LoongArch CPUs hardware flags. * LoongArch CPUs hardware flags.

16
target/loongarch/translate.c
View File

@ -86,6 +86,10 @@ void generate_exception(DisasContext *ctx, int excp)
static inline void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest) static inline void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
{ {
if (ctx->va32) {
dest = (uint32_t) dest;
}
if (translator_use_goto_tb(&ctx->base, dest)) { if (translator_use_goto_tb(&ctx->base, dest)) {
tcg_gen_goto_tb(n); tcg_gen_goto_tb(n);
tcg_gen_movi_tl(cpu_pc, dest); tcg_gen_movi_tl(cpu_pc, dest);
@ -212,11 +216,17 @@ static TCGv make_address_x(DisasContext *ctx, TCGv base, TCGv addend)
{ {
TCGv temp = NULL; TCGv temp = NULL;
if (addend) { if (addend || ctx->va32) {
temp = tcg_temp_new(); temp = tcg_temp_new();
}
if (addend) {
tcg_gen_add_tl(temp, base, addend); tcg_gen_add_tl(temp, base, addend);
base = temp; base = temp;
} }
if (ctx->va32) {
tcg_gen_ext32u_tl(temp, base);
base = temp;
}
return base; return base;
} }
@ -262,6 +272,10 @@ static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
} }
ctx->base.pc_next += 4; ctx->base.pc_next += 4;
if (ctx->va32) {
ctx->base.pc_next = (uint32_t)ctx->base.pc_next;
}
} }
static void loongarch_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs) static void loongarch_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)