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This commit is contained in:
Peter Rugg
2020-06-29 23:29:08 +01:00
parent 70185dabac
commit c8e4a64128
7 changed files with 37 additions and 16 deletions
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7
src_Core/ISA/ISA_Decls_CHERI.bsv
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@@ -101,10 +101,10 @@ function SCR unpackSCR(Bit#(5) x);
endcase);
endfunction
function CapPipe update_scr_via_csr (CapPipe old_scr, WordXL new_csr);
function CapPipe update_scr_via_csr (CapPipe old_scr, WordXL new_csr, Bool allow_sealed);
let new_scr = setOffset(old_scr, new_csr);
let ret = new_scr.value;
if (!new_scr.exact || (getKind(old_scr) != UNSEALED)) begin
if (!new_scr.exact || (getKind(old_scr) != UNSEALED && !allow_sealed)) begin
ret = setValidCap(ret, False);
end
return ret;
@@ -191,7 +191,8 @@ Bit #(5) f5rs2_cap_CClearReg = 5'h0d;
// 5'h0e unused
Bit #(5) f5rs2_cap_CGetAddr = 5'h0f;
Bit #(5) f5rs2_cap_CClearFPReg = 5'h10;
// 5'h11-5'h1f unused (5'h1f reserved for 1-reg instructions
Bit #(5) f5rs2_cap_CSealEntry = 5'h11;
// 5'h12-5'h1f unused (5'h1f reserved for 1-reg instructions
// ================================================================
// f7_cap_{Load, Store} opcode subdivision