diff options
Diffstat (limited to 'aarch64/kusswurm_ch11.c')
| -rw-r--r-- | aarch64/kusswurm_ch11.c | 61 |
1 files changed, 54 insertions, 7 deletions
diff --git a/aarch64/kusswurm_ch11.c b/aarch64/kusswurm_ch11.c index 4edfba0..58ca79f 100644 --- a/aarch64/kusswurm_ch11.c +++ b/aarch64/kusswurm_ch11.c @@ -1,3 +1,17 @@ +// ================================================================================================ +// Code written while reading chapter 11 of Modern Arm Assembly Language Programming +// +// License: +// SPDX-License-Identifier: 0BSD +// Copyright (c) 2026 Hunter Kvalevog +// +// Permission to use, copy, modify, and/or distribute this software for any +// purpose with or without fee is hereby granted. +// +// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +// WITH REGARD TO THIS SOFTWARE. +// ================================================================================================ + #include <stdint.h> #include <stdio.h> @@ -9,18 +23,51 @@ int64_t i64_add_sub(int64_t a, int64_t b, int64_t c); int32_t i32_mul(int32_t a, int32_t b); int64_t i32_mul_safe(int32_t a, int32_t b); -#define PRINT_LOG(FMT, CODE) printf(#CODE ": " FMT "\n", CODE) +// example 3 +void i32_quo_rem(int32_t num, int32_t den, int32_t *quo, int32_t *rem); + +// example 4 +int32_t test_ldr1(int32_t i, int64_t j, int32_t *tab); + +// example 5 +void test_mov1(uint32_t *tab); int main(int argc, const char* argv[]) { +#define X(FMT, CODE) printf(#CODE ": " FMT "\n", CODE) + // example 1 - PRINT_LOG("%d", i32_add_sub(5, 3, 1)); - PRINT_LOG("%lld", i64_add_sub(5, 3, 1)); + X("%d", i32_add_sub(5, 3, 1)); + X("%lld", i64_add_sub(5, 3, 1)); // example 2 - PRINT_LOG("%d", i32_mul(5, 6)); - PRINT_LOG("%d", i32_mul(2000000000, 4)); - PRINT_LOG("%lld", i32_mul_safe(5, 6)); - PRINT_LOG("%lld", i32_mul_safe(2000000000, 4)); + X("%d", i32_mul(5, 6)); + X("%d", i32_mul(2000000000, 4)); + X("%lld", i32_mul_safe(5, 6)); + X("%lld", i32_mul_safe(2000000000, 4)); + +#undef X +#define X(CODE) CODE; printf(#CODE ": quo=%d rem=%d\n", quo, rem) + + // example 3 + int32_t quo = 0; + int32_t rem = 0; + X(i32_quo_rem(6, 3, &quo, &rem)); + X(i32_quo_rem(7, 3, &quo, &rem)); + +#undef X +#define X(FMT, CODE) printf(#CODE ": " FMT "\n", CODE) + + // example 4 + int32_t tab[] = { 1, 2, 3, 4, 5, 6, 7, 8 }; + X("%d", test_ldr1(0, 0, tab)); + + // example 5 + uint32_t out[3] = { 0, 0, 0 }; + test_mov1(out); + printf("test_mov1(out):\n"); + printf(" out[0] = 0x%X\n", out[0]); + printf(" out[1] = 0x%X\n", out[1]); + printf(" out[2] = 0x%X\n", out[2]); } |