user: implement mlibc as the libc, finally.

It's finally done.. Signed-off-by: kaguya <vpshinomiya@protonmail.com>
2026-05-02 03:31:49 -04:00
parent 2fa39ad85a
commit 9a9b91c940
2387 changed files with 152741 additions and 315 deletions
@@ -0,0 +1,67 @@
+.global feclearexcept
+.type feclearexcept, %function
+feclearexcept:
+	li.w $t0, 0x1f0000
+	and $a0, $a0, $t0
+	movfcsr2gr $t1, $fcsr0
+	andn $t1, $t1, $a0
+	movgr2fcsr $fcsr0, $t1
+	li.w $a0, 0
+	jr $ra
+
+.global feraiseexcept
+.type feraiseexcept, %function
+feraiseexcept:
+	li.w $t0, 0x1f0000
+	and $a0, $a0, $t0
+	movfcsr2gr $t1, $fcsr0
+	or $t1, $t1, $a0
+	movgr2fcsr $fcsr0, $t1
+	li.w $a0, 0
+	jr $ra
+
+.global fetestexcept
+.type fetestexcept, %function
+fetestexcept:
+	li.w $t0, 0x1f0000
+	and $a0, $a0, $t0
+	movfcsr2gr $t1, $fcsr0
+	and $a0, $t1, $a0
+	jr $ra
+
+.global fegetround
+.type fegetround, %function
+fegetround:
+	movfcsr2gr $t0, $fcsr0
+	andi $a0, $t0, 0x300
+	jr $ra
+
+.global __fesetround
+.type __fesetround, %function
+__fesetround:
+	li.w $t0, 0x300
+	and $a0, $a0, $t0
+	movfcsr2gr $t1, $fcsr0
+	andn $t1, $t1, $t0
+	or $t1, $t1, $a0
+	movgr2fcsr $fcsr0, $t1
+	li.w $a0, 0
+	jr $ra
+
+.global fegetenv
+.type fegetenv, %function
+fegetenv:
+	movfcsr2gr $t0, $fcsr0
+	st.w $t0, $a0, 0
+	li.w $a0, 0
+	jr $ra
+
+.global fesetenv
+.type fesetenv, %function
+fesetenv:
+	addi.d $t0, $a0, 1
+	beq $t0, $r0, 1f
+	ld.w $t0, $a0, 0
+1:	movgr2fcsr $fcsr0, $t0
+	li.w $a0, 0
+	jr $ra