diff options
Diffstat (limited to 'shared/runtime')
| -rw-r--r-- | shared/runtime/gchelper.h | 2 | ||||
| -rw-r--r-- | shared/runtime/gchelper_generic.c | 31 | ||||
| -rw-r--r-- | shared/runtime/gchelper_rv32i.s | 52 |
3 files changed, 85 insertions, 0 deletions
diff --git a/shared/runtime/gchelper.h b/shared/runtime/gchelper.h index 645ee837f5..a863fb9aa8 100644 --- a/shared/runtime/gchelper.h +++ b/shared/runtime/gchelper.h @@ -41,6 +41,8 @@ typedef uintptr_t gc_helper_regs_t[4]; typedef uintptr_t gc_helper_regs_t[10]; #elif defined(__aarch64__) typedef uintptr_t gc_helper_regs_t[11]; // x19-x29 +#elif defined(__riscv) && defined(__riscv_xlen) && (__riscv_xlen == 32) +typedef uintptr_t gc_helper_regs_t[12]; // S0-S11 #endif #endif diff --git a/shared/runtime/gchelper_generic.c b/shared/runtime/gchelper_generic.c index 4ef2e73f7a..f1087e1990 100644 --- a/shared/runtime/gchelper_generic.c +++ b/shared/runtime/gchelper_generic.c @@ -150,6 +150,37 @@ static void gc_helper_get_regs(gc_helper_regs_t arr) { arr[10] = x29; } +#elif defined(__riscv) && defined(__riscv_xlen) && (__riscv_xlen == 32) + +// Fallback implementation for RV32I, prefer gchelper_rv32i.s + +static void gc_helper_get_regs(gc_helper_regs_t arr) { + register long s0 asm ("x8"); + register long s1 asm ("x9"); + register long s2 asm ("x18"); + register long s3 asm ("x19"); + register long s4 asm ("x20"); + register long s5 asm ("x21"); + register long s6 asm ("x22"); + register long s7 asm ("x23"); + register long s8 asm ("x24"); + register long s9 asm ("x25"); + register long s10 asm ("x26"); + register long s11 asm ("x27"); + arr[0] = s0; + arr[1] = s1; + arr[2] = s2; + arr[3] = s3; + arr[4] = s4; + arr[5] = s5; + arr[6] = s6; + arr[7] = s7; + arr[8] = s8; + arr[9] = s9; + arr[10] = s10; + arr[11] = s11; +} + #else #error "Architecture not supported for gc_helper_get_regs. Set MICROPY_GCREGS_SETJMP to use the fallback implementation." diff --git a/shared/runtime/gchelper_rv32i.s b/shared/runtime/gchelper_rv32i.s new file mode 100644 index 0000000000..64248e771a --- /dev/null +++ b/shared/runtime/gchelper_rv32i.s @@ -0,0 +1,52 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2024 Alessandro Gatti + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + + .global gc_helper_get_regs_and_sp + .type gc_helper_get_regs_and_sp, @function + +gc_helper_get_regs_and_sp: + + /* Store registers into the given array. */ + + sw x8, 0(x10) /* Save S0. */ + sw x9, 4(x10) /* Save S1. */ + sw x18, 8(x10) /* Save S2. */ + sw x19, 12(x10) /* Save S3. */ + sw x20, 16(x10) /* Save S4. */ + sw x21, 20(x10) /* Save S5. */ + sw x22, 24(x10) /* Save S6. */ + sw x23, 28(x10) /* Save S7. */ + sw x24, 32(x10) /* Save S8. */ + sw x25, 36(x10) /* Save S9. */ + sw x26, 40(x10) /* Save S10. */ + sw x27, 44(x10) /* Save S11. */ + + /* Return the stack pointer. */ + + add x10, x0, x2 + jalr x0, x1, 0 + + .size gc_helper_get_regs_and_sp, .-gc_helper_get_regs_and_sp |