| /* |
| * Copyright (c) 2020 Raspberry Pi (Trading) Ltd. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include "pico.h" |
| |
| #if !PICO_ASSEMBLER_IS_CLANG |
| #define apsr_nzcv r15 |
| #endif |
| # note we don't do this by default in this file for backwards comaptibility with user code |
| # that may include this file, but not use unified syntax. Note that this macro does equivalent |
| # setup to the pico_default_asm macro for inline assembly in C code. |
| .macro pico_default_asm_setup |
| #ifndef __riscv |
| .syntax unified |
| .cpu cortex-m33 |
| .fpu fpv5-sp-d16 |
| .thumb |
| #endif |
| .endm |
| |
| // do not put align in here as it is used mid function sometimes |
| .macro regular_func x |
| .global \x |
| .type \x,%function |
| #ifndef __riscv |
| .thumb_func |
| #endif |
| \x: |
| .endm |
| |
| .macro weak_func x |
| .weak \x |
| .type \x,%function |
| #ifndef __riscv |
| .thumb_func |
| #endif |
| \x: |
| .endm |
| |
| .macro regular_func_with_section x |
| .section .text.\x |
| regular_func \x |
| .endm |
| |
| // do not put align in here as it is used mid function sometimes |
| .macro wrapper_func x |
| regular_func WRAPPER_FUNC_NAME(\x) |
| .endm |
| |
| .macro weak_wrapper_func x |
| weak_func WRAPPER_FUNC_NAME(\x) |
| .endm |
| |
| .macro __pre_init_with_offset func, offset, priority_string1 |
| .section .preinit_array.\priority_string1 |
| .p2align 2 |
| .word \func + \offset |
| .endm |
| |
| # backwards compatibility |
| .macro __pre_init func, priority_string1 |
| __pre_init_with_offset func, 0, priority_string1 |
| .endm |
| |
| #ifdef __riscv |
| // rd = (rs1 >> rs2[4:0]) & ~(-1 << nbits) |
| .macro h3.bextm rd rs1 rs2 nbits |
| .if (\nbits < 1) || (\nbits > 8) |
| .err |
| .endif |
| .insn r 0x0b, 0x4, (((\nbits - 1) & 0x7 ) << 1), \rd, \rs1, \rs2 |
| .endm |
| |
| // rd = (rs1 >> shamt) & ~(-1 << nbits) |
| .macro h3.bextmi rd rs1 shamt nbits |
| .if (\nbits < 1) || (\nbits > 8) |
| .err |
| .endif |
| .if (\shamt < 0) || (\shamt > 31) |
| .err |
| .endif |
| .insn i 0x0b, 0x4, \rd, \rs1, (\shamt & 0x1f) | (((\nbits - 1) & 0x7 ) << 6) |
| .endm |
| #endif |
