FreeCalypso > hg > freecalypso-citrine
view lldbg/serio.S @ 46:38cf7fa65976
sprintf/float.c: rounding corner case bug
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 29 Sep 2017 03:23:01 +0000 |
parents | 75a11d740a02 |
children |
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#include "../include/config.h" #include "ns16550.h" /* this module implements the elementary serial I/O operations */ .text .code 32 .globl lldbg_serial_out lldbg_serial_out: ldr r2, =CONFIG_LLDBG_UART_BASE 1: ldrb r3, [r2, #NS16550_LSR] tst r3, #NS16550_LSR_THRE beq 1b strb r0, [r2, #NS16550_THR] bx lr .globl lldbg_serial_in_poll lldbg_serial_in_poll: ldr r2, =CONFIG_LLDBG_UART_BASE ldrb r3, [r2, #NS16550_LSR] tst r3, #NS16550_LSR_DR ldrneb r0, [r2, #NS16550_RBR] mvneq r0, #0 bx lr #if 0 // not needed currently .globl lldbg_serial_flush lldbg_serial_flush: ldr r2, =CONFIG_LLDBG_UART_BASE 1: ldrb r3, [r2, #NS16550_LSR] tst r3, #NS16550_LSR_TEMP beq 1b bx lr #endif