162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci#include <linux/types.h> 362306a36Sopenharmony_ci#include <linux/errno.h> 462306a36Sopenharmony_ci#include <linux/uaccess.h> 562306a36Sopenharmony_ci 662306a36Sopenharmony_ci#include <asm/sfp-machine.h> 762306a36Sopenharmony_ci#include <math-emu/soft-fp.h> 862306a36Sopenharmony_ci#include <math-emu/double.h> 962306a36Sopenharmony_ci#include <math-emu/single.h> 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ciint 1262306a36Sopenharmony_cifsubs(void *frD, void *frA, void *frB) 1362306a36Sopenharmony_ci{ 1462306a36Sopenharmony_ci FP_DECL_D(A); 1562306a36Sopenharmony_ci FP_DECL_D(B); 1662306a36Sopenharmony_ci FP_DECL_D(R); 1762306a36Sopenharmony_ci FP_DECL_EX; 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci#ifdef DEBUG 2062306a36Sopenharmony_ci printk("%s: %p %p %p\n", __func__, frD, frA, frB); 2162306a36Sopenharmony_ci#endif 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci FP_UNPACK_DP(A, frA); 2462306a36Sopenharmony_ci FP_UNPACK_DP(B, frB); 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci#ifdef DEBUG 2762306a36Sopenharmony_ci printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 2862306a36Sopenharmony_ci printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 2962306a36Sopenharmony_ci#endif 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci if (B_c != FP_CLS_NAN) 3262306a36Sopenharmony_ci B_s ^= 1; 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_ci if (A_s != B_s && A_c == FP_CLS_INF && B_c == FP_CLS_INF) 3562306a36Sopenharmony_ci FP_SET_EXCEPTION(EFLAG_VXISI); 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci FP_ADD_D(R, A, B); 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci#ifdef DEBUG 4062306a36Sopenharmony_ci printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 4162306a36Sopenharmony_ci#endif 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ci __FP_PACK_DS(frD, R); 4462306a36Sopenharmony_ci 4562306a36Sopenharmony_ci return FP_CUR_EXCEPTIONS; 4662306a36Sopenharmony_ci} 47