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Remove no-longer-needed csr_read_only check in validate_csr()
All CSR permissions checks now occur inside the
csr_t::verify_permissions() methods.
This reverts commit 62526773c0.
pull/821/head
Scott Johnson
5 years ago
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GPG Key ID: 61C1F01D3D1410C9
1 changed files with
1 additions and
5 deletions
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riscv/decode.h
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@ -368,11 +368,7 @@ inline freg_t f128_negate(freg_t a) |
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#define validate_csr(which, write) ({ \ |
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if (!STATE.serialized) return PC_SERIALIZE_BEFORE; \ |
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STATE.serialized = false; \ |
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/* disallow writes to read-only CSRs */ \ |
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unsigned csr_read_only = get_field((which), 0xC00) == 3; \ |
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if ((write) && csr_read_only) \ |
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throw trap_illegal_instruction(insn.bits()); \ |
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/* other permissions checks occur in get_csr */ \ |
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/* permissions check occurs in get_csr */ \ |
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(which); }) |
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/* For debug only. This will fail if the native machine's float types are not IEEE */ |
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