6  * SPDX-License-Identifier: GPL-2.0-or-later
13 #include "exec/helper-proto.h.inc"
23 /* Perform 16-bit signed saturating addition.  */
39 /* Perform 8-bit signed saturating addition.  */
55 /* Perform 16-bit signed saturating subtraction.  */
60     res = a - b;  in sub16_sat()
71 /* Perform 8-bit signed saturating subtraction.  */
76     res = a - b;  in sub8_sat()
87 #define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16);  argument
88 #define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16);  argument
89 #define ADD8(a, b, n)  RESULT(add8_sat(a, b), n, 8);  argument
90 #define SUB8(a, b, n)  RESULT(sub8_sat(a, b), n, 8);  argument
109         return a - b;  in sub16_usat()
128         return a - b;  in sub8_usat()
134 #define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16);  argument
135 #define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16);  argument
136 #define ADD8(a, b, n)  RESULT(add8_usat(a, b), n, 8);  argument
137 #define SUB8(a, b, n)  RESULT(sub8_usat(a, b), n, 8);  argument
143 #define SARITH16(a, b, n, op) do { \  argument
146     RESULT(sum, n, 16); \
148         ge |= 3 << (n * 2); \
151 #define SARITH8(a, b, n, op) do { \  argument
154     RESULT(sum, n, 8); \
156         ge |= 1 << n; \
160 #define ADD16(a, b, n) SARITH16(a, b, n, +)  argument
161 #define SUB16(a, b, n) SARITH16(a, b, n, -)  argument
162 #define ADD8(a, b, n)  SARITH8(a, b, n, +)  argument
163 #define SUB8(a, b, n)  SARITH8(a, b, n, -)  argument
170 #define ADD16(a, b, n) do { \  argument
173     RESULT(sum, n, 16); \
175         ge |= 3 << (n * 2); \
178 #define ADD8(a, b, n) do { \  argument
181     RESULT(sum, n, 8); \
183         ge |= 1 << n; \
186 #define SUB16(a, b, n) do { \  argument
188     sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \
189     RESULT(sum, n, 16); \
191         ge |= 3 << (n * 2); \
194 #define SUB8(a, b, n) do { \  argument
196     sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \
197     RESULT(sum, n, 8); \
199         ge |= 1 << n; \
208 #define ADD16(a, b, n) \  argument
209   RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16)
210 #define SUB16(a, b, n) \  argument
211   RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16)
212 #define ADD8(a, b, n) \  argument
213   RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8)
214 #define SUB8(a, b, n) \  argument
215   RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8)
221 #define ADD16(a, b, n) \  argument
222   RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16)
223 #define SUB16(a, b, n) \  argument
224   RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16)
225 #define ADD8(a, b, n) \  argument
226   RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8)
227 #define SUB8(a, b, n) \  argument
228   RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8)
236         return a - b;  in do_usad()
238         return b - a;  in do_usad()