diff options
Diffstat (limited to 'libgcc/config/m32c')
-rw-r--r-- | libgcc/config/m32c/lib1funcs.S | 231 | ||||
-rw-r--r-- | libgcc/config/m32c/lib2funcs.c | 134 | ||||
-rw-r--r-- | libgcc/config/m32c/t-m32c | 13 | ||||
-rw-r--r-- | libgcc/config/m32c/trapv.c | 43 |
4 files changed, 421 insertions, 0 deletions
diff --git a/libgcc/config/m32c/lib1funcs.S b/libgcc/config/m32c/lib1funcs.S new file mode 100644 index 00000000000..9b657787187 --- /dev/null +++ b/libgcc/config/m32c/lib1funcs.S @@ -0,0 +1,231 @@ +/* libgcc routines for R8C/M16C/M32C + Copyright (C) 2005, 2009, 2010 + 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 + .text +#ifdef A16 + .global m32c_jsri16 +m32c_jsri16: + add.w #-1, sp + + /* Read the address (16 bits) and return address (24 bits) off + the stack. */ + mov.w 4[sp], r0 + mov.w 1[sp], r3 + mov.b 3[sp], a0 /* This zero-extends, so the high byte has + zero in it. */ + + /* Write the return address, then new address, to the stack. */ + mov.w a0, 1[sp] /* Just to get the zero in 2[sp]. */ + mov.w r0, 0[sp] + mov.w r3, 3[sp] + mov.b a0, 5[sp] + + /* This "returns" to the target address, leaving the pending + return address on the stack. */ + rts +#endif + +#endif diff --git a/libgcc/config/m32c/lib2funcs.c b/libgcc/config/m32c/lib2funcs.c new file mode 100644 index 00000000000..274affc4ab0 --- /dev/null +++ b/libgcc/config/m32c/lib2funcs.c @@ -0,0 +1,134 @@ +/* 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/>. */ + +typedef int sint32_type __attribute__ ((mode (SI))); +typedef unsigned int uint32_type __attribute__ ((mode (SI))); +typedef int word_type __attribute__ ((mode (__word__))); + +uint32_type udivmodsi4 (uint32_type, uint32_type, word_type); +sint32_type __divsi3 (sint32_type, sint32_type); +sint32_type __modsi3 (sint32_type, sint32_type); + +uint32_type +udivmodsi4 (uint32_type num, uint32_type den, word_type modwanted) +{ + uint32_type bit = 1; + uint32_type res = 0; + + while (den < num && bit && !(den & (1L << 31))) + { + den <<= 1; + bit <<= 1; + } + while (bit) + { + if (num >= den) + { + num -= den; + res |= bit; + } + bit >>= 1; + den >>= 1; + } + if (modwanted) + return num; + return res; +} + +sint32_type +__divsi3 (sint32_type a, sint32_type b) +{ + word_type neg = 0; + sint32_type res; + + if (a < 0) + { + a = -a; + neg = !neg; + } + + if (b < 0) + { + b = -b; + neg = !neg; + } + + res = udivmodsi4 (a, b, 0); + + if (neg) + res = -res; + + return res; +} + +sint32_type +__modsi3 (sint32_type a, sint32_type b) +{ + word_type neg = 0; + sint32_type res; + + if (a < 0) + { + a = -a; + neg = 1; + } + + if (b < 0) + b = -b; + + res = udivmodsi4 (a, b, 1); + + if (neg) + res = -res; + + return res; +} + +/* See the comment by the definition of LIBGCC2_UNITS_PER_WORD in + m32c.h for why we are creating extra versions of some of the + functions defined in libgcc2.c. */ + +#define LIBGCC2_UNITS_PER_WORD 2 + +#define L_clzsi2 +#define L_ctzsi2 +#define L_ffssi2 +#define L_paritysi2 +#define L_popcountsi2 + +#include "libgcc2.c" + +uint32_type +__udivsi3 (uint32_type a, uint32_type b) +{ + return udivmodsi4 (a, b, 0); +} + +uint32_type +__umoddi3 (uint32_type a, uint32_type b) +{ + return udivmodsi4 (a, b, 1); +} diff --git a/libgcc/config/m32c/t-m32c b/libgcc/config/m32c/t-m32c new file mode 100644 index 00000000000..dac99ec652f --- /dev/null +++ b/libgcc/config/m32c/t-m32c @@ -0,0 +1,13 @@ +LIB1ASMSRC = m32c/lib1funcs.S + +LIB1ASMFUNCS = \ + __m32c_memregs \ + __m32c_eh_return \ + __m32c_mulsi3 \ + __m32c_cmpsi2 \ + __m32c_ucmpsi2 \ + __m32c_jsri16 + +LIB2ADD = $(srcdir)/config/m32c/lib2funcs.c \ + $(srcdir)/config/m32c/trapv.c + diff --git a/libgcc/config/m32c/trapv.c b/libgcc/config/m32c/trapv.c new file mode 100644 index 00000000000..0c8c174ef81 --- /dev/null +++ b/libgcc/config/m32c/trapv.c @@ -0,0 +1,43 @@ +/* 16-bit trapping arithmetic routines for R8C/M16C/M32C + Copyright (C) 2009, 2011 + 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/>. */ + +/* See the comment by the definition of LIBGCC2_UNITS_PER_WORD in + m32c.h for why we are creating extra versions of some of the + functions defined in libgcc2.c. + + Note - this file is separate from lib2funcs.c so that the following + functions will appear in the their object file. This is necessary + because they call abort() which is defined in the C library whereas + the functions in lib2funcs.c are completely self sufficient. */ + +#define LIBGCC2_UNITS_PER_WORD 2 + +#define L_mulvsi3 +#define L_negvsi2 +#define L_addvsi3 +#define L_subvsi3 + +#include "libgcc2.c" |