--- /dev/null
+/* libgcc routines for R8C/M16C/M32C
+ Copyright (C) 2005, 2009
+ Free Software Foundation, Inc.
+ Contributed by Red Hat.
+
+ This file is part of GCC.
+
+ GCC is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GCC is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
+
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#if defined(__r8c_cpu__) || defined(__m16c_cpu__)
+#define A16
+#define A(n,w) n
+#define W w
+#else
+#define A24
+#define A(n,w) w
+#define W l
+#endif
+
+
+#ifdef L__m32c_memregs
+
+/* Warning: these memory locations are used as a register bank. They
+ *must* end up consecutive in any final executable, so you may *not*
+ use the otherwise obvious ".comm" directive to allocate space for
+ them. */
+
+ .bss
+ .global mem0
+mem0: .space 1
+ .global mem1
+mem1: .space 1
+ .global mem2
+mem2: .space 1
+ .global mem3
+mem3: .space 1
+ .global mem4
+mem4: .space 1
+ .global mem5
+mem5: .space 1
+ .global mem6
+mem6: .space 1
+ .global mem7
+mem7: .space 1
+ .global mem8
+mem8: .space 1
+ .global mem9
+mem9: .space 1
+ .global mem10
+mem10: .space 1
+ .global mem11
+mem11: .space 1
+ .global mem12
+mem12: .space 1
+ .global mem13
+mem13: .space 1
+ .global mem14
+mem14: .space 1
+ .global mem15
+mem15: .space 1
+
+#endif
+
+#ifdef L__m32c_eh_return
+ .text
+ .global __m32c_eh_return
+__m32c_eh_return:
+
+ /* At this point, r0 has the stack adjustment, r1r3 has the
+ address to return to. The stack looks like this:
+
+ old_ra
+ old_fp
+ <- unwound sp
+ ...
+ fb
+ through
+ r0
+ <- sp
+
+ What we need to do is restore all the registers, update the
+ stack, and return to the right place.
+ */
+
+ stc sp,a0
+
+ add.W A(#16,#24),a0
+ /* a0 points to the current stack, just above the register
+ save areas */
+
+ mov.w a0,a1
+ exts.w r0
+ sub.W A(r0,r2r0),a1
+ sub.W A(#3,#4),a1
+ /* a1 points to the new stack. */
+
+ /* This is for the "rts" below. */
+ mov.w r1,[a1]
+#ifdef A16
+ mov.w r2,r1
+ mov.b r1l,2[a1]
+#else
+ mov.w r2,2[a1]
+#endif
+
+ /* This is for the "popc sp" below. */
+ mov.W a1,[a0]
+
+ popm r0,r1,r2,r3,a0,a1,sb,fb
+ popc sp
+ rts
+#endif
+
+/* SImode arguments for SI foo(SI,SI) functions. */
+#ifdef A16
+#define SAL 5[fb]
+#define SAH 7[fb]
+#define SBL 9[fb]
+#define SBH 11[fb]
+#else
+#define SAL 8[fb]
+#define SAH 10[fb]
+#define SBL 12[fb]
+#define SBH 14[fb]
+#endif
+
+#ifdef L__m32c_mulsi3
+ .text
+ .global ___mulsi3
+___mulsi3:
+ enter #0
+ push.w r2
+ mov.w SAL,r0
+ mulu.w SBL,r0 /* writes to r2r0 */
+ mov.w r0,mem0
+ mov.w r2,mem2
+ mov.w SAL,r0
+ mulu.w SBH,r0 /* writes to r2r0 */
+ add.w r0,mem2
+ mov.w SAH,r0
+ mulu.w SBL,r0 /* writes to r2r0 */
+ add.w r0,mem2
+ pop.w r2
+ exitd
+#endif
+
+#ifdef L__m32c_cmpsi2
+ .text
+ .global ___cmpsi2
+___cmpsi2:
+ enter #0
+ cmp.w SBH,SAH
+ jgt cmpsi_gt
+ jlt cmpsi_lt
+ cmp.w SBL,SAL
+ jgt cmpsi_gt
+ jlt cmpsi_lt
+ mov.w #1,r0
+ exitd
+cmpsi_gt:
+ mov.w #2,r0
+ exitd
+cmpsi_lt:
+ mov.w #0,r0
+ exitd
+#endif
+
+#ifdef L__m32c_ucmpsi2
+ .text
+ .global ___ucmpsi2
+___ucmpsi2:
+ enter #0
+ cmp.w SBH,SAH
+ jgtu cmpsi_gt
+ jltu cmpsi_lt
+ cmp.w SBL,SAL
+ jgtu cmpsi_gt
+ jltu cmpsi_lt
+ mov.w #1,r0
+ exitd
+cmpsi_gt:
+ mov.w #2,r0
+ exitd
+cmpsi_lt:
+ mov.w #0,r0
+ exitd
+#endif
+
+#ifdef L__m32c_jsri16
+ .data
+m32c_jsri_addr:
+ .byte 0, 0, 0
+m32c_jsri_ret:
+ .byte 0, 0, 0
+
+ .text
+ .global m32c_jsri16
+m32c_jsri16:
+ pop.w m32c_jsri_ret
+ pop.b m32c_jsri_ret+2
+ pop.w m32c_jsri_addr
+ push.b m32c_jsri_ret+2
+ push.w m32c_jsri_ret
+ jmpi.a m32c_jsri_addr
+
+#endif
projects / msp430-gcc.git / blobdiff