debug: Test discontinuous hartid

[lz-bro]

Current tests assume hart IDs are contiguous and start at 0, how to support testing discontinuous Hart IDs?

riscv-tests/debug/targets.py

Line 210 in b5ba870

f"-DNHARTS={len(self.harts)}",

riscv-tests/debug/programs/entry.S

Lines 61 to 72 in b5ba870

	# Initialize stack pointer.
	la sp, stack_bottom
	# Give each hart STACK_SIZE of stack.
	# Assume hart IDs are contiguous and start at 0.
	li t1, STACK_SIZE
	csrr t0, CSR_MHARTID
	# Don't use mul instruction because not all harts support it.
	addi t0, t0, 1
	1:
	add sp, sp, t1
	addi t0, t0, -1
	bnez t0, 1b

riscv-tests/debug/programs/entry.S

Lines 223 to 225 in b5ba870

	stack_bottom:
	.fill NHARTS * STACK_SIZE/4, 4, 0x22446688
	stack_top:

riscv-tests/debug/programs/multicore.c

Lines 42 to 43 in b5ba870

	static unsigned hart_count[NHARTS];
	static unsigned interrupt_count[NHARTS];

riscv-tests/debug/programs/multicore.c

Lines 55 to 57 in b5ba870

	uint32_t hartid = read_csr(mhartid);
	hart_count[hartid] = 0;
	interrupt_count[hartid] = 0;