microwatt

Author	SHA1	Message	Date
Anton Blanchard	04eb9583e6	Clean up register read debug output Right now we continually print all 3 possible GPRs an instruction may be using. Add signals so we only print GPRs when they are actually read. This should hopefully optimise away when synthesized. Signed-off-by: Anton Blanchard <anton@linux.ibm.com>	6 years ago
Anton Blanchard	9fbaea6f08	Rework CR file and add forwarding Handle the CR as a single field with per nibble enables. Forward any writes in the same cycle. If this proves to be an issue for timing, we may want to revisit this in the future. For now, it keeps things simple. Signed-off-by: Anton Blanchard <anton@linux.ibm.com>	6 years ago
Anton Blanchard	5e140298a5	Rework decode2 The decode2 stage was spaghetti code and needed cleaning up. Create a series of functions to pull fields from a ppc instruction and also a series of helpers to extract values for the execution units. As suggested by Paul, we should pass all signals to the execution units and only set the valid signal conditionally, which should use less resources. Signed-off-by: Anton Blanchard <anton@linux.ibm.com>	6 years ago
Anton Blanchard	5a29cb4699	Initial import of microwatt Signed-off-by: Anton Blanchard <anton@linux.ibm.com>	6 years ago

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