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Diffstat (limited to 'otherlibs/num/bng_ppc.c')
| -rw-r--r-- | otherlibs/num/bng_ppc.c | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/otherlibs/num/bng_ppc.c b/otherlibs/num/bng_ppc.c deleted file mode 100644 index f4c098cf08..0000000000 --- a/otherlibs/num/bng_ppc.c +++ /dev/null @@ -1,94 +0,0 @@ -/**************************************************************************/ -/* */ -/* OCaml */ -/* */ -/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */ -/* */ -/* Copyright 2003 Institut National de Recherche en Informatique et */ -/* en Automatique. */ -/* */ -/* All rights reserved. This file is distributed under the terms of */ -/* the GNU Lesser General Public License version 2.1, with the */ -/* special exception on linking described in the file LICENSE. */ -/* */ -/**************************************************************************/ - -/* Code specific to the PowerPC architecture. */ - -#define BngAdd2(res,carryout,arg1,arg2) \ - asm("addc %0, %2, %3 \n\t" \ - "li %1, 0 \n\t" \ - "addze %1, %1" \ - : "=r" (res), "=r" (carryout) \ - : "r" (arg1), "r" (arg2)) - -#define BngAdd2Carry(res,carryout,arg1,arg2,carryin) \ - asm("addic %1, %4, -1 \n\t" \ - "adde %0, %2, %3 \n\t" \ - "li %1, 0 \n\t" \ - "addze %1, %1" \ - : "=r" (res), "=&r" (carryout) \ - : "r" (arg1), "r" (arg2), "1" (carryin)) - -#define BngAdd3(res,carryaccu,arg1,arg2,arg3) \ - asm("addc %0, %2, %3 \n\t" \ - "addze %1, %1 \n\t" \ - "addc %0, %0, %4 \n\t" \ - "addze %1, %1" \ - : "=&r" (res), "=&r" (carryaccu) \ - : "r" (arg1), "r" (arg2), "r" (arg3), "1" (carryaccu)) - -/* The "subtract" instructions interpret carry differently than what we - need: the processor carry bit CA is 1 if no carry occured, - 0 if a carry occured. In other terms, CA = !carry. - Thus, subfe rd,ra,rb computes rd = ra - rb - !CA - subfe rd,rd,rd sets rd = - !CA - subfe rd,rd,rd; neg rd, rd sets rd = !CA and recovers "our" carry. */ - -#define BngSub2(res,carryout,arg1,arg2) \ - asm("subfc %0, %3, %2 \n\t" \ - "subfe %1, %1, %1\n\t" \ - "neg %1, %1" \ - : "=r" (res), "=r" (carryout) \ - : "r" (arg1), "r" (arg2)) - -#define BngSub2Carry(res,carryout,arg1,arg2,carryin) \ - asm("subfic %1, %4, 0 \n\t" \ - "subfe %0, %3, %2 \n\t" \ - "subfe %1, %1, %1 \n\t" \ - "neg %1, %1" \ - : "=r" (res), "=&r" (carryout) \ - : "r" (arg1), "r" (arg2), "1" (carryin)) - -/* Here is what happens with carryaccu: - neg %1, %1 carryaccu = -carryaccu - addze %1, %1 carryaccu += !carry1 - addze %1, %1 carryaccu += !carry2 - subifc %1, %1, 2 carryaccu = 2 - carryaccu - Thus, carryaccu_final = carryaccu_initial + 2 - (1 - carry1) - (1 - carry2) - = carryaccu_initial + carry1 + carry2 -*/ - -#define BngSub3(res,carryaccu,arg1,arg2,arg3) \ - asm("neg %1, %1 \n\t" \ - "subfc %0, %3, %2 \n\t" \ - "addze %1, %1 \n\t" \ - "subfc %0, %4, %0 \n\t" \ - "addze %1, %1 \n\t" \ - "subfic %1, %1, 2 \n\t" \ - : "=&r" (res), "=&r" (carryaccu) \ - : "r" (arg1), "r" (arg2), "r" (arg3), "1" (carryaccu)) - -#if defined(__ppc64__) || defined(__PPC64__) -#define BngMult(resh,resl,arg1,arg2) \ - asm("mulld %0, %2, %3 \n\t" \ - "mulhdu %1, %2, %3" \ - : "=&r" (resl), "=r" (resh) \ - : "r" (arg1), "r" (arg2)) -#else -#define BngMult(resh,resl,arg1,arg2) \ - asm("mullw %0, %2, %3 \n\t" \ - "mulhwu %1, %2, %3" \ - : "=&r" (resl), "=r" (resh) \ - : "r" (arg1), "r" (arg2)) -#endif |