gem5 - gem5

Age	Commit message (Collapse)	Author
2016-10-26	gpu-compute: use System cache line size in the GPU	Tony Gutierrez

2016-10-26	gpu-compute, hsail: make the PC a byte address, not an instruction index	Tony Gutierrez
	currently the PC is incremented on an instruction granularity, and not as an instruction's byte address. machine ISA instructions assume the PC is a byte address, and is incremented accordingly. here we make the GPU model, and the HSAIL instructions treat the PC as a byte address as well.
2016-10-26	gpu-compute: add gpu_isa.hh to switch hdrs, add GPUISA to WF	Tony Gutierrez
	the GPUISA class is meant to encapsulate any ISA-specific behavior - special register accesses, isa-specific WF/kernel state, etc. - in a generic enough way so that it may be used in ISA-agnostic code. gpu-compute: use the GPUISA object to advance the PC the GPU model treats the PC as a pointer to individual instruction objects - which are store in a contiguous array - and not a byte address to be fetched from the real memory system. this is ok for HSAIL because all instructions are considered by the model to be the same size. in machine ISA, however, instructions may be 32b or 64b, and branches are calculated by advancing the PC by the number of words (4 byte chunks) it needs to advance in the real instruction stream. because of this there is a mismatch between the PC we use to index into the instruction array, and the actual byte address PC the ISA expects. here we move the PC advance calculation to the ISA so that differences in the instrucion sizes may be accounted for in generic way.
2016-09-16	gpu-compute: Wavefront refactoring	Alexandru Dutu
	Renaming members of the Wavefront class in accordance with the style guide.
2016-01-19	gpu-compute: AMD's baseline GPU model	Tony Gutierrez