Richard Henderson | c213ee2 | 2023-03-31 20:13:36 -0700 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | /* |
| 3 | * Helper file for declaring TCG helper functions. |
| 4 | * This one expands prototypes for the helper functions. |
| 5 | * Define HELPER_H for the header file to be expanded. |
| 6 | */ |
| 7 | |
Philippe Mathieu-Daudé | 2379866 | 2024-04-22 16:41:04 +0200 | [diff] [blame] | 8 | #include "exec/helper-head.h.inc" |
Richard Henderson | c213ee2 | 2023-03-31 20:13:36 -0700 | [diff] [blame] | 9 | |
| 10 | /* |
| 11 | * Work around an issue with --enable-lto, in which GCC's ipa-split pass |
| 12 | * decides to split out the noreturn code paths that raise an exception, |
| 13 | * taking the __builtin_return_address() along into the new function, |
| 14 | * where it no longer computes a value that returns to TCG generated code. |
| 15 | * Despite the name, the noinline attribute affects splitter, so this |
| 16 | * prevents the optimization in question. Given that helpers should not |
| 17 | * otherwise be called directly, this should not have any other visible effect. |
| 18 | * |
| 19 | * See https://gitlab.com/qemu-project/qemu/-/issues/1454 |
| 20 | */ |
| 21 | #define DEF_HELPER_ATTR __attribute__((noinline)) |
| 22 | |
| 23 | #define DEF_HELPER_FLAGS_0(name, flags, ret) \ |
| 24 | dh_ctype(ret) HELPER(name) (void) DEF_HELPER_ATTR; |
| 25 | |
| 26 | #define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \ |
| 27 | dh_ctype(ret) HELPER(name) (dh_ctype(t1)) DEF_HELPER_ATTR; |
| 28 | |
| 29 | #define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \ |
| 30 | dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2)) DEF_HELPER_ATTR; |
| 31 | |
| 32 | #define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \ |
| 33 | dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), \ |
| 34 | dh_ctype(t3)) DEF_HELPER_ATTR; |
| 35 | |
| 36 | #define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \ |
| 37 | dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \ |
| 38 | dh_ctype(t4)) DEF_HELPER_ATTR; |
| 39 | |
| 40 | #define DEF_HELPER_FLAGS_5(name, flags, ret, t1, t2, t3, t4, t5) \ |
| 41 | dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \ |
| 42 | dh_ctype(t4), dh_ctype(t5)) DEF_HELPER_ATTR; |
| 43 | |
| 44 | #define DEF_HELPER_FLAGS_6(name, flags, ret, t1, t2, t3, t4, t5, t6) \ |
| 45 | dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \ |
| 46 | dh_ctype(t4), dh_ctype(t5), \ |
| 47 | dh_ctype(t6)) DEF_HELPER_ATTR; |
| 48 | |
| 49 | #define DEF_HELPER_FLAGS_7(name, flags, ret, t1, t2, t3, t4, t5, t6, t7) \ |
| 50 | dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \ |
| 51 | dh_ctype(t4), dh_ctype(t5), dh_ctype(t6), \ |
| 52 | dh_ctype(t7)) DEF_HELPER_ATTR; |
| 53 | |
| 54 | #define IN_HELPER_PROTO |
| 55 | |
| 56 | #include HELPER_H |
| 57 | |
| 58 | #undef IN_HELPER_PROTO |
| 59 | |
| 60 | #undef DEF_HELPER_FLAGS_0 |
| 61 | #undef DEF_HELPER_FLAGS_1 |
| 62 | #undef DEF_HELPER_FLAGS_2 |
| 63 | #undef DEF_HELPER_FLAGS_3 |
| 64 | #undef DEF_HELPER_FLAGS_4 |
| 65 | #undef DEF_HELPER_FLAGS_5 |
| 66 | #undef DEF_HELPER_FLAGS_6 |
| 67 | #undef DEF_HELPER_FLAGS_7 |
| 68 | #undef DEF_HELPER_ATTR |