Porting PicoTCP WIP

2025-10-29 14:29:06 +01:00
parent 6722f42e68
commit 815c2239fe
464 changed files with 235009 additions and 24 deletions
--- a/kernel/picotcp/include/arch/pico_posix.h
+++ b/kernel/picotcp/include/arch/pico_posix.h
@ -0,0 +1,137 @@
+/*********************************************************************
+   PicoTCP. Copyright (c) 2012-2017 Altran Intelligent Systems. Some rights reserved.
+   See COPYING, LICENSE.GPLv2 and LICENSE.GPLv3 for usage.
+ *********************************************************************/
+
+#ifndef PICO_SUPPORT_POSIX
+#define PICO_SUPPORT_POSIX
+
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+/*
+   #define MEMORY_MEASURE
+   #define TIME_PRESCALE
+   #define PICO_SUPPORT_THREADING
+ */
+#define dbg printf
+
+#define stack_fill_pattern(...) do {} while(0)
+#define stack_count_free_words(...) do {} while(0)
+#define stack_get_free_words() (0)
+
+/* measure allocated memory */
+#ifdef MEMORY_MEASURE
+extern uint32_t max_mem;
+extern uint32_t cur_mem;
+
+static inline void *pico_zalloc(int x)
+{
+    uint32_t *ptr;
+    if ((cur_mem + x) > (10 * 1024))
+        return NULL;
+
+    ptr = (uint32_t *)calloc(x + 4, 1);
+    *ptr = (uint32_t)x;
+    cur_mem += x;
+    if (cur_mem > max_mem) {
+        max_mem = cur_mem;
+    }
+
+    return (void*)(ptr + 1);
+}
+
+static inline void pico_free(void *x)
+{
+    uint32_t *ptr = (uint32_t*)(((uint8_t *)x) - 4);
+    cur_mem -= *ptr;
+    free(ptr);
+}
+#else
+#define pico_zalloc(x) calloc(x, 1)
+#define pico_free(x) free(x)
+#endif
+
+/* time prescaler */
+#ifdef TIME_PRESCALE
+extern int32_t prescale_time;
+#endif
+
+#if defined(PICO_SUPPORT_RTOS) || defined (PICO_SUPPORT_PTHREAD)
+/* pico_ms_tick must be defined */
+extern volatile uint32_t pico_ms_tick;
+
+static inline uint32_t PICO_TIME(void)
+{
+    #ifdef TIME_PRESCALE
+        return (pico_ms_tick / 1000) << prescale_time;
+    #else
+        return (pico_ms_tick / 1000);
+    #endif
+}
+
+static inline uint32_t PICO_TIME_MS(void)
+{
+    #ifdef TIME_PRESCALE
+        return pico_ms_tick << prescale_time;
+    #else
+        return pico_ms_tick;
+    #endif
+}
+
+#else
+
+static inline uint32_t PICO_TIME(void)
+{
+    struct timeval t;
+    gettimeofday(&t, NULL);
+  #ifdef TIME_PRESCALE
+    return (prescale_time < 0) ? (uint32_t)(t.tv_sec / 1000 << (-prescale_time)) : \
+           (uint32_t)(t.tv_sec / 1000 >> prescale_time);
+  #else
+    return (uint32_t)t.tv_sec;
+  #endif
+}
+
+static inline uint32_t PICO_TIME_MS(void)
+{
+    struct timeval t;
+    gettimeofday(&t, NULL);
+  #ifdef TIME_PRESCALER
+    uint32_t tmp = ((t.tv_sec * 1000) + (t.tv_usec / 1000));
+    return (prescale_time < 0) ? (uint32_t)(tmp / 1000 << (-prescale_time)) : \
+           (uint32_t)(tmp / 1000 >> prescale_time);
+  #else
+    return (uint32_t)((t.tv_sec * 1000) + (t.tv_usec / 1000));
+  #endif
+}
+#endif
+
+#ifdef PICO_SUPPORT_THREADING
+#define PICO_SUPPORT_MUTEX
+/* mutex implementations */
+extern void *pico_mutex_init(void);
+extern void pico_mutex_lock(void *mux);
+extern void pico_mutex_unlock(void *mux);
+
+/* semaphore implementations (only used in wrapper code) */
+extern void *pico_sem_init(void);
+extern void pico_sem_destroy(void *sem);
+extern void pico_sem_post(void *sem);
+/* returns -1 on timeout (in ms), else returns 0 */
+/* if timeout < 0, the semaphore waits forever */
+extern int pico_sem_wait(void *sem, int timeout);
+
+/* thread implementations */
+extern void *pico_thread_create(void *(*routine)(void *), void *arg);
+#endif  /* PICO_SUPPORT_THREADING */
+
+static inline void PICO_IDLE(void)
+{
+    usleep(5000);
+}
+
+#endif  /* PICO_SUPPORT_POSIX */
+