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[PATCH v4 6/9] target/riscv/tcg: handle profile MISA bits
From: |
Daniel Henrique Barboza |
Subject: |
[PATCH v4 6/9] target/riscv/tcg: handle profile MISA bits |
Date: |
Wed, 25 Oct 2023 10:49:58 -0300 |
The profile support is handling multi-letter extensions only. Let's add
support for MISA bits as well.
We'll go through every known MISA bit. If the profile doesn't declare the bit
as mandatory, ignore it. Otherwise, set or clear the bit in env->misa_ext and
env->misa_ext_mask depending on whether the profile was set to 'true' or
'false'.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
---
target/riscv/tcg/tcg-cpu.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index b2489a5317..57026cfcca 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -804,6 +804,19 @@ static void cpu_set_profile(Object *obj, Visitor *v, const
char *name,
profile->user_set = true;
profile->enabled = value;
+ for (i = 0; misa_bits[i] != 0; i++) {
+ uint32_t bit = misa_bits[i];
+
+ if (!(profile->misa_ext & bit)) {
+ continue;
+ }
+
+ g_hash_table_insert(misa_ext_user_opts,
+ GUINT_TO_POINTER(bit),
+ (gpointer)value);
+ riscv_cpu_write_misa_bit(cpu, bit, profile->enabled);
+ }
+
for (i = 0; profile->ext_offsets[i] != RISCV_PROFILE_EXT_LIST_END; i++) {
ext_offset = profile->ext_offsets[i];
--
2.41.0
- [PATCH v4 4/9] target/riscv/tcg: add MISA user options hash, (continued)
- [PATCH v4 4/9] target/riscv/tcg: add MISA user options hash, Daniel Henrique Barboza, 2023/10/25
- [PATCH v4 8/9] target/riscv/tcg: honor user choice for G MISA bits, Daniel Henrique Barboza, 2023/10/25
- [PATCH v4 9/9] target/riscv/tcg: warn if profile exts are disabled, Daniel Henrique Barboza, 2023/10/25
- [PATCH v4 5/9] target/riscv/tcg: add riscv_cpu_write_misa_bit(), Daniel Henrique Barboza, 2023/10/25
- [PATCH v4 7/9] target/riscv/tcg: add hash table insert helpers, Daniel Henrique Barboza, 2023/10/25
- [PATCH v4 6/9] target/riscv/tcg: handle profile MISA bits,
Daniel Henrique Barboza <=