From: LIU Zhiwei <zhiwei_liu@c-sky.com>
To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: palmer@dabbelt.com, richard.henderson@linaro.org,
bin.meng@windriver.com, Alistair.Francis@wdc.com,
LIU Zhiwei <zhiwei_liu@c-sky.com>
Subject: [PATCH v2 01/14] target/riscv: Sign extend pc for different XLEN
Date: Wed, 10 Nov 2021 15:04:39 +0800 [thread overview]
Message-ID: <20211110070452.48539-2-zhiwei_liu@c-sky.com> (raw)
In-Reply-To: <20211110070452.48539-1-zhiwei_liu@c-sky.com>
When pc is written, it is sign-extended to fill the widest supported XLEN.
Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
---
target/riscv/translate.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 1d57bc97b5..a6a73ced9e 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -150,16 +150,24 @@ static void gen_check_nanbox_s(TCGv_i64 out, TCGv_i64 in)
tcg_gen_movcond_i64(TCG_COND_GEU, out, in, t_max, in, t_nan);
}
+static void gen_set_pc(DisasContext *ctx, target_ulong dest)
+{
+ if (get_xl(ctx) == MXL_RV32) {
+ dest = (int32_t)dest;
+ }
+ tcg_gen_movi_tl(cpu_pc, dest);
+}
+
static void generate_exception(DisasContext *ctx, int excp)
{
- tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
+ gen_set_pc(ctx, ctx->base.pc_next);
gen_helper_raise_exception(cpu_env, tcg_constant_i32(excp));
ctx->base.is_jmp = DISAS_NORETURN;
}
static void generate_exception_mtval(DisasContext *ctx, int excp)
{
- tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
+ gen_set_pc(ctx, ctx->base.pc_next);
tcg_gen_st_tl(cpu_pc, cpu_env, offsetof(CPURISCVState, badaddr));
gen_helper_raise_exception(cpu_env, tcg_constant_i32(excp));
ctx->base.is_jmp = DISAS_NORETURN;
@@ -179,10 +187,10 @@ static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
{
if (translator_use_goto_tb(&ctx->base, dest)) {
tcg_gen_goto_tb(n);
- tcg_gen_movi_tl(cpu_pc, dest);
+ gen_set_pc(ctx, dest);
tcg_gen_exit_tb(ctx->base.tb, n);
} else {
- tcg_gen_movi_tl(cpu_pc, dest);
+ gen_set_pc(ctx, dest);
tcg_gen_lookup_and_goto_ptr();
}
}
--
2.25.1
next prev parent reply other threads:[~2021-11-10 7:06 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-10 7:04 [PATCH v2 00/14] Support UXL filed in xstatus LIU Zhiwei
2021-11-10 7:04 ` LIU Zhiwei [this message]
2021-11-10 10:18 ` [PATCH v2 01/14] target/riscv: Sign extend pc for different XLEN Richard Henderson
2021-11-10 7:04 ` [PATCH v2 02/14] target/riscv: Ignore the pc bits above XLEN LIU Zhiwei
2021-11-10 7:04 ` [PATCH v2 03/14] target/riscv: Extend pc for runtime pc write LIU Zhiwei
2021-11-10 7:04 ` [PATCH v2 04/14] target/riscv: Use gdb xml according to max mxlen LIU Zhiwei
2021-11-10 9:42 ` LIU Zhiwei
2021-11-10 7:04 ` [PATCH v2 05/14] target/riscv: Calculate address according to XLEN LIU Zhiwei
2021-11-10 10:52 ` Richard Henderson
2021-11-10 13:44 ` LIU Zhiwei
2021-11-10 14:40 ` Richard Henderson
2021-11-11 5:04 ` LIU Zhiwei
2021-11-10 7:04 ` [PATCH v2 06/14] target/riscv: Adjust vsetvl " LIU Zhiwei
2021-11-10 7:04 ` [PATCH v2 07/14] target/riscv: Ajdust vector atomic check with XLEN LIU Zhiwei
2021-11-10 10:55 ` Richard Henderson
2021-11-10 7:04 ` [PATCH v2 08/14] target/riscv: Fix check range for first fault only LIU Zhiwei
2021-11-10 7:04 ` [PATCH v2 09/14] target/riscv: Relax debug check for pm write LIU Zhiwei
2021-11-10 11:31 ` Richard Henderson
2021-11-10 7:04 ` [PATCH v2 10/14] target/riscv: Adjust vector address with mask LIU Zhiwei
2021-11-10 11:11 ` Richard Henderson
2021-11-10 14:08 ` LIU Zhiwei
2021-11-10 14:43 ` Richard Henderson
2021-11-10 7:04 ` [PATCH v2 11/14] target/riscv: Adjust scalar reg in vector with XLEN LIU Zhiwei
2021-11-10 11:29 ` Richard Henderson
2021-11-10 7:04 ` [PATCH v2 12/14] target/riscv: Split out the vill from vtype LIU Zhiwei
2021-11-10 11:23 ` Richard Henderson
2021-11-10 14:26 ` LIU Zhiwei
2021-11-10 15:01 ` Richard Henderson
2021-11-10 7:04 ` [PATCH v2 13/14] target/riscv: Don't save pc when exception return LIU Zhiwei
2021-11-10 11:25 ` Richard Henderson
2021-11-10 7:04 ` [PATCH v2 14/14] target/riscv: Enable uxl field write LIU Zhiwei
2021-11-10 11:27 ` Richard Henderson
2021-11-10 14:38 ` LIU Zhiwei
2021-11-10 15:02 ` Richard Henderson
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