/* See LICENSE of license details. */ #include #include #include #include #include "platform.h" #include "semihosting.h" #include "stub.h" #include "weak_under_alias.h" ssize_t __wrap_read(int fd, void *ptr, size_t len) { uint8_t *current = (uint8_t *)ptr; #if defined(SEMIHOSTING) int i = sh_read(current, fd, len); return i; #endif #if defined(BOARD_hifive1) volatile uint32_t *uart_rx = (uint32_t *)(UART0_CTRL_ADDR + UART_REG_RXFIFO); volatile uint8_t *uart_rx_cnt = (uint8_t *)(UART0_CTRL_ADDR + UART_REG_RXCTRL + 2); #elif defined(BOARD_iss) volatile uint32_t *uart_rx = (uint32_t *)0xFFFF0000; #elif defined(BOARD_TGCP) // TODO: implement #elif !defined(BOARD_ehrenberg) && !defined(BOARD_tgc_vp) volatile uint32_t *uart_rx = (uint32_t *)(UART0_BASE_ADDR + UART_REG_RXFIFO); volatile uint8_t *uart_rx_cnt = (uint8_t *)(UART0_BASE_ADDR + UART_REG_RXCTRL + 2); #endif ssize_t result = 0; if (isatty(fd)) { #if defined(BOARD_ehrenberg) || defined(BOARD_tgc_vp) for (current = (uint8_t *)ptr; (current < ((uint8_t *)ptr) + len) && (get_uart_rx_tx_reg_rx_avail(uart) > 0); current++) { *current = uart_read(uart); result++; } #elif defined(BOARD_iss) for (current = (uint8_t *)ptr; (current < ((uint8_t *)ptr) + len); current++) { *current = *uart_rx; result++; } #elif defined(BOARD_TGCP) // TODO: implement #else for (current = (uint8_t *)ptr; (current < ((uint8_t *)ptr) + len) && (*uart_rx_cnt > 0); current++) { *current = *uart_rx; result++; } #endif return result; } return _stub(EBADF); } weak_under_alias(read);