cores/cpu/microwatt: temporary revert crt0.S/setup stack.

lxsim --cpu-type=microwatt --cpu-variant=standard+ghdl no longer working otherwise.
2020-06-22 11:36:19 +02:00 · 2020-06-22 11:36:19 +02:00 · 84617b585b
parent e32e8c069b
commit 84617b585b
1 changed files with 5 additions and 3 deletions
--- a/litex/soc/cores/cpu/microwatt/crt0.S
+++ b/litex/soc/cores/cpu/microwatt/crt0.S
@ -76,9 +76,11 @@ _start:
 	bdnz	0b
 1:
 	/* setup stack */
-	ld	%r1,_fstack@got(%r2)
-	bl	main
-	b	.
+	LOAD_IMM64(%r1, _fstack - 0x100)
+	LOAD_IMM64(%r12, main)
+	mtctr	%r12,
+	bctrl
+	b .

 #define EXCEPTION(nr)		\
 	.=  nr;      \