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-rw-r--r--c/src/lib/libbsp/i386/shared/comm/i386-stub-glue.c273
1 files changed, 0 insertions, 273 deletions
diff --git a/c/src/lib/libbsp/i386/shared/comm/i386-stub-glue.c b/c/src/lib/libbsp/i386/shared/comm/i386-stub-glue.c
deleted file mode 100644
index 96105e8a21..0000000000
--- a/c/src/lib/libbsp/i386/shared/comm/i386-stub-glue.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- * Copyright (c) 2016.
- * Chris Johns <chrisj@rtems.org>
- *
- * This software is Copyright (C) 1998 by T.sqware - all rights limited
- * It is provided in to the public domain "as is", can be freely modified
- * as far as this copyight notice is kept unchanged, but does not imply
- * an endorsement by T.sqware of the product in which it is included.
- */
-
-#include <bsp.h>
-#include <bsp/irq-generic.h>
-#include <libchip/serial.h>
-
-#include "../../../../../../../bsps/shared/dev/serial/legacy-console.h"
-
-int putDebugChar(int ch); /* write a single character */
-int getDebugChar(void); /* read and return a single char */
-
-/* Check is any characters received are a ^C */
-int i386_gdb_uart_ctrl_c_check(void);
-
-/* Raw interrupt handler. */
-void i386_gdb_uart_isr(void);
-
-/* assign an exception handler */
-void exceptionHandler(int, void (*handler)(void));
-
-/* User supplied remote debug option. */
-extern int remote_debug;
-
-/* Current uart and port used by the gdb stub */
-static int uart_current;
-static int uart_vector;
-static console_tbl* port_current;
-
-/*
- * Interrupt service routine for all, it does it check whether ^C is received
- * if yes it will flip TF bit before returning.
- *
- * Note: it should be installed as raw interrupt handler.
- *
- * Warning: I do not like the use of the global data, I am not
- * sure if this is SMP safe.
- */
-int i386_gdb_uart_isr_regsav[4] RTEMS_UNUSED;
-__asm__ (".p2align 4");
-__asm__ (".text");
-__asm__ (".globl i386_gdb_uart_isr");
-__asm__ ("i386_gdb_uart_isr:");
-__asm__ (" pusha"); /* Push all */
-__asm__ (" call i386_gdb_uart_ctrl_c_check"); /* Look for ^C */
-__asm__ (" movl %eax, i386_gdb_uart_isr_regsav"); /* Save eax */
-__asm__ (" popa"); /* Pop all */
-__asm__ (" xchgl %eax, i386_gdb_uart_isr_regsav"); /* Exchange eax */
-__asm__ (" cmpl $0, %eax"); /* 1 == ^C */
-__asm__ (" je i386_gdb_uart_isr_1"); /* branch if 0 */
-__asm__ (" movl %ebx, i386_gdb_uart_isr_regsav + 4"); /* Save ebx */
-__asm__ (" movl %edx, i386_gdb_uart_isr_regsav + 8"); /* Save edx */
-__asm__ (" popl %ebx"); /* Pop eip */
-__asm__ (" popl %edx"); /* Pop cs */
-__asm__ (" popl %eax"); /* Pop flags */
-__asm__ (" orl $0x100, %eax"); /* Modify it */
-__asm__ (" pushl %eax"); /* Push it back */
-__asm__ (" pushl %edx"); /* Push cs */
-__asm__ (" pushl %ebx"); /* Push eip */
-__asm__ (" movl i386_gdb_uart_isr_regsav + 4, %ebx"); /* Restore ebx */
-__asm__ (" movl i386_gdb_uart_isr_regsav + 8, %edx"); /* Restore edx */
-__asm__ ("i386_gdb_uart_isr_1:");
-__asm__ (" movl i386_gdb_uart_isr_regsav, %eax"); /* Restore eax */
-__asm__ (" iret"); /* Done */
-
-static int gdb_hello_index;
-static const char *const gdb_hello = "+";
-
-static inline uint8_t BSP_i8259a_irq_in_service_reg(uint32_t ioport)
-{
- uint8_t isr;
- outport_byte(ioport, PIC_OCW3_SEL | PIC_OCW3_RR | PIC_OCW3_RIS);
- inport_byte(ioport, isr);
- outport_byte(ioport, PIC_OCW3_SEL | PIC_OCW3_RR);
- return isr;
-}
-
-static inline void BSP_irq_ack_at_i8259a(const int irqLine)
-{
- uint8_t slave_isr = 0;
- if (irqLine >= 8) {
- outport_byte(PIC_SLAVE_COMMAND_IO_PORT, PIC_EOI);
- slave_isr = BSP_i8259a_irq_in_service_reg(PIC_SLAVE_COMMAND_IO_PORT);
- }
-
- /*
- * Only issue the EOI to the master if there are no more interrupts in
- * service for the slave. i8259a data sheet page 18, The Special Fully Nested
- * Mode, b.
- */
- if (slave_isr == 0)
- outport_byte(PIC_MASTER_COMMAND_IO_PORT, PIC_EOI);
-}
-
-int i386_gdb_uart_ctrl_c_check(void)
-{
- BSP_irq_ack_at_i8259a(uart_vector);
- if (port_current) {
- int c = 0;
- while (c >= 0) {
- c = port_current->pDeviceFns->deviceRead(uart_current);
- if (c == 3) {
- gdb_hello_index = 0;
- return 1;
- } else if (gdb_hello[gdb_hello_index] == (char) c) {
- ++gdb_hello_index;
- if (gdb_hello[gdb_hello_index] == '\0') {
- gdb_hello_index = 0;
- return 1;
- }
- } else {
- gdb_hello_index = 0;
- }
- }
- }
- return 0;
-}
-
-static void
-nop(const rtems_raw_irq_connect_data* notused)
-{
-}
-
-static int
-isOn(const rtems_raw_irq_connect_data* notused)
-{
- return 1;
-}
-
-int i386_stub_glue_uart(void)
-{
- if (port_current == NULL)
- return -1;
- return uart_current;
-}
-
-/*
- * Initialize glue code linking i386-stub with the rest of
- * the system
- */
-void
-i386_stub_glue_init(int uart)
-{
- rtems_device_minor_number minor = (rtems_device_minor_number) uart;
-
- port_current = console_find_console_entry(NULL, 0, &minor);
-
- if (port_current == NULL) {
- printk("GDB: invalid minor number for UART\n");
- return;
- }
-
- uart_current = uart;
-
- /* Intialise the UART, assuming polled drivers */
- port_current->pDeviceFns->deviceInitialize(uart);
-}
-
-static void BSP_uart_on(const rtems_raw_irq_connect_data* used)
-{
- bsp_interrupt_vector_enable(used->idtIndex - BSP_IRQ_VECTOR_BASE);
-}
-
-static void BSP_uart_off(const rtems_raw_irq_connect_data* used)
-{
- bsp_interrupt_vector_disable(used->idtIndex - BSP_IRQ_VECTOR_BASE);
-}
-
-/*
- * In order to have a possibility to break into
- * running program, one has to call this function
- */
-void i386_stub_glue_init_breakin(void)
-{
- rtems_raw_irq_connect_data uart_raw_irq_data;
-
- if (port_current == NULL) {
- printk("GDB: no port initialised\n");
- return;
- }
-
- if ((port_current->ulIntVector == 0) || (port_current->ulIntVector > 16)) {
- printk("GDB: no UART interrupt support\n");
- }
- else {
- uart_vector = port_current->ulIntVector;
- uart_raw_irq_data.idtIndex = port_current->ulIntVector + BSP_IRQ_VECTOR_BASE;
-
- if (!i386_get_current_idt_entry(&uart_raw_irq_data)) {
- printk("GBD: cannot get idt entry\n");
- rtems_fatal_error_occurred(1);
- }
-
- if (!i386_delete_idt_entry(&uart_raw_irq_data)) {
- printk("GDB: cannot delete idt entry\n");
- rtems_fatal_error_occurred(1);
- }
-
- uart_raw_irq_data.on = BSP_uart_on;
- uart_raw_irq_data.off = BSP_uart_off;
-
- /* Install ISR */
- uart_raw_irq_data.idtIndex = port_current->ulIntVector + BSP_IRQ_VECTOR_BASE;
- uart_raw_irq_data.hdl = i386_gdb_uart_isr;
-
- if (!i386_set_idt_entry (&uart_raw_irq_data)) {
- printk("GDB: raw exception handler connection failed\n");
- rtems_fatal_error_occurred(1);
- }
-
- /* Enable interrupts, this is a bit of a hack because we
- * have to know the device but there is no other call. */
- (*port_current->setRegister)(port_current->ulCtrlPort1, 1, 0x01);
- }
-}
-
-int
-putDebugChar(int ch)
-{
- if (port_current != NULL) {
- port_current->pDeviceFns->deviceWritePolled(uart_current, ch);
- }
- return 1;
-}
-
-int getDebugChar(void)
-{
- int c = -1;
-
- if (port_current != NULL) {
- while (c < 0)
- c = port_current->pDeviceFns->deviceRead(uart_current);
- }
-
- return c;
-}
-
-void exceptionHandler(int vector, void (*handler)(void))
-{
- rtems_raw_irq_connect_data excep_raw_irq_data;
-
- excep_raw_irq_data.idtIndex = vector;
-
- if(!i386_get_current_idt_entry(&excep_raw_irq_data))
- {
- printk("GDB: cannot get idt entry\n");
- rtems_fatal_error_occurred(1);
- }
-
- if(!i386_delete_idt_entry(&excep_raw_irq_data))
- {
- printk("GDB: cannot delete idt entry\n");
- rtems_fatal_error_occurred(1);
- }
-
- excep_raw_irq_data.on = nop;
- excep_raw_irq_data.off = nop;
- excep_raw_irq_data.isOn = isOn;
- excep_raw_irq_data.hdl = handler;
-
- if (!i386_set_idt_entry (&excep_raw_irq_data)) {
- printk("GDB: raw exception handler connection failed\n");
- rtems_fatal_error_occurred(1);
- }
- return;
-}
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