URL https://opencores.org/ocsvn/neorv32/neorv32/trunk

Subversion Repositories neorv32

[/] [neorv32/] [trunk/] [sw/] [common/] [crt0.S] - Diff between revs 40 and 41

Rev 40	Rev 41
Line 185...	Line 185...
`// clear cycle and instruction counters`	`// clear cycle and instruction counters`
`csrw mcycle, zero`	`csrw mcycle, zero`
`csrw mcycleh, zero`	`csrw mcycleh, zero`
`csrw minstret, zero`	`csrw minstret, zero`
`csrw minstreth, zero`	`csrw minstreth, zero`
	`// enable read-access from user-mode for cycle[h], time[h] and instret[h]`
	`csrwi 0x306, 7 // mcounteren`
	`// enable auto-increment of all counters`
	`csrw 0x320, x0 // mcountinhibit`

`// restore mcause reset value (so that 'main' knows we are coming from reset)`	`// restore mcause reset value (so that 'main' knows we are coming from reset)`
`li x12, 0x80000000`	`li x12, 0x80000000`
`csrw mcause, x12`	`csrw mcause, x12`