| //===----------------------Hexagon builtin routine ------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Functions that implement common sequences in function prologues and epilogues |
| // used to save code size |
| |
| .macro FUNCTION_BEGIN name |
| .p2align 2 |
| .section .text.\name,"ax",@progbits |
| .globl \name |
| .type \name, @function |
| \name: |
| .endm |
| |
| .macro FUNCTION_END name |
| .size \name, . - \name |
| .endm |
| |
| .macro FALLTHROUGH_TAIL_CALL name0 name1 |
| .p2align 2 |
| .size \name0, . - \name0 |
| .globl \name1 |
| .type \name1, @function |
| \name1: |
| .endm |
| |
| |
| |
| |
| // Save r17:16 at fp+#-8, r19:18 at fp+#-16, r21:20 at fp+#-24, r23:22 at |
| // fp+#-32, r25:24 at fp+#-40, and r27:26 at fp+#-48. |
| // The compiler knows that the __save_* functions clobber LR. No other |
| // registers should be used without informing the compiler. |
| |
| FUNCTION_BEGIN __save_r16_through_r27 |
| { |
| memd(fp+#-48) = r27:26 |
| memd(fp+#-40) = r25:24 |
| } |
| { |
| memd(fp+#-32) = r23:22 |
| memd(fp+#-24) = r21:20 |
| } |
| { |
| memd(fp+#-16) = r19:18 |
| memd(fp+#-8) = r17:16 |
| jumpr lr |
| } |
| FUNCTION_END __save_r16_through_r27 |
| |
| FUNCTION_BEGIN __save_r16_through_r25 |
| { |
| memd(fp+#-40) = r25:24 |
| memd(fp+#-32) = r23:22 |
| } |
| { |
| memd(fp+#-24) = r21:20 |
| memd(fp+#-16) = r19:18 |
| } |
| { |
| memd(fp+#-8) = r17:16 |
| jumpr lr |
| } |
| FUNCTION_END __save_r16_through_r25 |
| |
| FUNCTION_BEGIN __save_r16_through_r23 |
| { |
| memd(fp+#-32) = r23:22 |
| memd(fp+#-24) = r21:20 |
| } |
| { |
| memd(fp+#-16) = r19:18 |
| memd(fp+#-8) = r17:16 |
| jumpr lr |
| } |
| FUNCTION_END __save_r16_through_r23 |
| |
| FUNCTION_BEGIN __save_r16_through_r21 |
| { |
| memd(fp+#-24) = r21:20 |
| memd(fp+#-16) = r19:18 |
| } |
| { |
| memd(fp+#-8) = r17:16 |
| jumpr lr |
| } |
| FUNCTION_END __save_r16_through_r21 |
| |
| FUNCTION_BEGIN __save_r16_through_r19 |
| { |
| memd(fp+#-16) = r19:18 |
| memd(fp+#-8) = r17:16 |
| jumpr lr |
| } |
| FUNCTION_END __save_r16_through_r19 |
| |
| FUNCTION_BEGIN __save_r16_through_r17 |
| { |
| memd(fp+#-8) = r17:16 |
| jumpr lr |
| } |
| FUNCTION_END __save_r16_through_r17 |
| |
| // For each of the *_before_tailcall functions, jumpr lr is executed in parallel |
| // with deallocframe. That way, the return gets the old value of lr, which is |
| // where these functions need to return, and at the same time, lr gets the value |
| // it needs going into the tail call. |
| |
| |
| FUNCTION_BEGIN __restore_r16_through_r27_and_deallocframe_before_tailcall |
| r27:26 = memd(fp+#-48) |
| { |
| r25:24 = memd(fp+#-40) |
| r23:22 = memd(fp+#-32) |
| } |
| { |
| r21:20 = memd(fp+#-24) |
| r19:18 = memd(fp+#-16) |
| } |
| { |
| r17:16 = memd(fp+#-8) |
| deallocframe |
| jumpr lr |
| } |
| FUNCTION_END __restore_r16_through_r27_and_deallocframe_before_tailcall |
| |
| FUNCTION_BEGIN __restore_r16_through_r25_and_deallocframe_before_tailcall |
| { |
| r25:24 = memd(fp+#-40) |
| r23:22 = memd(fp+#-32) |
| } |
| { |
| r21:20 = memd(fp+#-24) |
| r19:18 = memd(fp+#-16) |
| } |
| { |
| r17:16 = memd(fp+#-8) |
| deallocframe |
| jumpr lr |
| } |
| FUNCTION_END __restore_r16_through_r25_and_deallocframe_before_tailcall |
| |
| FUNCTION_BEGIN __restore_r16_through_r23_and_deallocframe_before_tailcall |
| { |
| r23:22 = memd(fp+#-32) |
| r21:20 = memd(fp+#-24) |
| } |
| r19:18 = memd(fp+#-16) |
| { |
| r17:16 = memd(fp+#-8) |
| deallocframe |
| jumpr lr |
| } |
| FUNCTION_END __restore_r16_through_r23_and_deallocframe_before_tailcall |
| |
| |
| FUNCTION_BEGIN __restore_r16_through_r21_and_deallocframe_before_tailcall |
| { |
| r21:20 = memd(fp+#-24) |
| r19:18 = memd(fp+#-16) |
| } |
| { |
| r17:16 = memd(fp+#-8) |
| deallocframe |
| jumpr lr |
| } |
| FUNCTION_END __restore_r16_through_r19_and_deallocframe_before_tailcall |
| |
| FUNCTION_BEGIN __restore_r16_through_r19_and_deallocframe_before_tailcall |
| r19:18 = memd(fp+#-16) |
| { |
| r17:16 = memd(fp+#-8) |
| deallocframe |
| jumpr lr |
| } |
| FUNCTION_END __restore_r16_through_r19_and_deallocframe_before_tailcall |
| |
| FUNCTION_BEGIN __restore_r16_through_r17_and_deallocframe_before_tailcall |
| { |
| r17:16 = memd(fp+#-8) |
| deallocframe |
| jumpr lr |
| } |
| FUNCTION_END __restore_r16_through_r17_and_deallocframe_before_tailcall |
| |
| |
| FUNCTION_BEGIN __restore_r16_through_r27_and_deallocframe |
| r27:26 = memd(fp+#-48) |
| { |
| r25:24 = memd(fp+#-40) |
| r23:22 = memd(fp+#-32) |
| } |
| { |
| r21:20 = memd(fp+#-24) |
| r19:18 = memd(fp+#-16) |
| } |
| { |
| r17:16 = memd(fp+#-8) |
| dealloc_return |
| } |
| FUNCTION_END __restore_r16_through_r27_and_deallocframe |
| |
| FUNCTION_BEGIN __restore_r16_through_r25_and_deallocframe |
| { |
| r25:24 = memd(fp+#-40) |
| r23:22 = memd(fp+#-32) |
| } |
| { |
| r21:20 = memd(fp+#-24) |
| r19:18 = memd(fp+#-16) |
| } |
| { |
| r17:16 = memd(fp+#-8) |
| dealloc_return |
| } |
| FUNCTION_END __restore_r16_through_r25_and_deallocframe |
| |
| FUNCTION_BEGIN __restore_r16_through_r23_and_deallocframe |
| { |
| r23:22 = memd(fp+#-32) |
| } |
| { |
| r21:20 = memd(fp+#-24) |
| r19:18 = memd(fp+#-16) |
| } |
| { |
| r17:16 = memd(fp+#-8) |
| dealloc_return |
| } |
| FUNCTION_END __restore_r16_through_r23_and_deallocframe |
| |
| FUNCTION_BEGIN __restore_r16_through_r21_and_deallocframe |
| { |
| r21:20 = memd(fp+#-24) |
| r19:18 = memd(fp+#-16) |
| } |
| { |
| r17:16 = memd(fp+#-8) |
| dealloc_return |
| } |
| FUNCTION_END __restore_r16_through_r21_and_deallocframe |
| |
| FUNCTION_BEGIN __restore_r16_through_r19_and_deallocframe |
| { |
| r19:18 = memd(fp+#-16) |
| r17:16 = memd(fp+#-8) |
| } |
| { |
| dealloc_return |
| } |
| FUNCTION_END __restore_r16_through_r19_and_deallocframe |
| |
| FUNCTION_BEGIN __restore_r16_through_r17_and_deallocframe |
| { |
| r17:16 = memd(fp+#-8) |
| dealloc_return |
| } |
| FUNCTION_END __restore_r16_through_r17_and_deallocframe |
| |
| FUNCTION_BEGIN __deallocframe |
| dealloc_return |
| FUNCTION_END __deallocframe |