DEBUGIF.HARTINFO

Address offset: 0x448

Hart Information

This register gives information about the hart currently selected by hartsel. This register is optional. If it is not present it should read all-zero. If this register is included, the debugger can do more with the Program Buffer by writing programs which explicitly access the data and/or dscratch registers


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID												D	D	D	D				C	B	B	B	B	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	DATAADDR		-2048 .. 2047								Data Address If dataaccess is 0: The number of the first CSR dedicated to shadowing the data registers. If dataaccess is 1: Address of RAM where the data registers are shadowed. This address is sign extended and easily addressed with a load or store using x0 as the address register.
B	R	DATASIZE		0 .. 12								Data Size If dataaccess is 0: Number of CSRs dedicated to shadowing the data registers. If dataaccess is 1: Number of 32-bit words in the memory map dedicated to shadowing the data registers. Since there are at most 12 data registers, the value in this register must be 12 or smaller
C	R	DATAACCESS										Data Access
			No	0								The data registers are shadowed in the hart by CSRs. Each CSR is DXLEN bits in size, and corresponds to a single argument.
			Yes	1								The data registers are shadowed in the hart’s memory map. Each register takes up 4 bytes in the memory map.
D	R	NSCRATCH										Number of dscratch registers Number of dscratch registers available for the debugger to use during program buffer execution, starting from dscratch0. The debugger can make no assumptions about the contents of these registers between commands.