diff options
Diffstat (limited to 'src/cpu/exec_context.hh')
| -rw-r--r-- | src/cpu/exec_context.hh | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/src/cpu/exec_context.hh b/src/cpu/exec_context.hh index c65841db2..951c9c2b3 100644 --- a/src/cpu/exec_context.hh +++ b/src/cpu/exec_context.hh @@ -12,6 +12,7 @@ * modified or unmodified, in source code or in binary form. * * Copyright (c) 2002-2005 The Regents of The University of Michigan + * Copyright (c) 2015 Advanced Micro Devices, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -173,9 +174,36 @@ class ExecContext { */ virtual Addr getEA() const = 0; + /** + * Perform an atomic memory read operation. Must be overridden + * for exec contexts that support atomic memory mode. Not pure + * virtual since exec contexts that only support timing memory + * mode need not override (though in that case this function + * should never be called). + */ virtual Fault readMem(Addr addr, uint8_t *data, unsigned int size, - unsigned int flags) = 0; + unsigned int flags) + { + panic("ExecContext::readMem() should be overridden\n"); + } + /** + * Initiate a timing memory read operation. Must be overridden + * for exec contexts that support timing memory mode. Not pure + * virtual since exec contexts that only support atomic memory + * mode need not override (though in that case this function + * should never be called). + */ + virtual Fault initiateMemRead(Addr addr, unsigned int size, + unsigned int flags) + { + panic("ExecContext::initiateMemRead() should be overridden\n"); + } + + /** + * For atomic-mode contexts, perform an atomic memory write operation. + * For timing-mode contexts, initiate a timing memory write operation. + */ virtual Fault writeMem(uint8_t *data, unsigned int size, Addr addr, unsigned int flags, uint64_t *res) = 0; |