debugcmds.c

// Debugging commands.
//
// Copyright (C) 2016-2021  Kevin O'Connor <kevin@koconnor.net>
//
// This file may be distributed under the terms of the GNU GPLv3 license.

#include "board/io.h" // readl
#include "board/irq.h" // irq_save
#include "command.h" // DECL_COMMAND

void
command_debug_read(uint32_t *args)
{
    uint8_t order = args[0];
    void *ptr = command_decode_ptr(args[1]);
    uint32_t v;
    irqstatus_t flag = irq_save();
    switch (order) {
    default: case 0: v = readb(ptr); break;
    case 1:          v = readw(ptr); break;
    case 2:          v = readl(ptr); break;
    }
    irq_restore(flag);
    sendf("debug_result val=%u", v);
}
DECL_COMMAND_FLAGS(command_debug_read, HF_IN_SHUTDOWN,
                   "debug_read order=%c addr=%u");

void
command_debug_write(uint32_t *args)
{
    uint8_t order = args[0];
    void *ptr = command_decode_ptr(args[1]);
    uint32_t v = args[2];
    irqstatus_t flag = irq_save();
    switch (order) {
    default: case 0: writeb(ptr, v); break;
    case 1:          writew(ptr, v); break;
    case 2:          writel(ptr, v); break;
    }
    irq_restore(flag);
}
DECL_COMMAND_FLAGS(command_debug_write, HF_IN_SHUTDOWN,
                   "debug_write order=%c addr=%u val=%u");

void
command_debug_ping(uint32_t *args)
{
    uint8_t len = args[0];
    char *data = command_decode_ptr(args[1]);
    sendf("pong data=%*s", len, data);
}
DECL_COMMAND_FLAGS(command_debug_ping, HF_IN_SHUTDOWN, "debug_ping data=%*s");

void
command_debug_nop(uint32_t *args)
{
}
DECL_COMMAND_FLAGS(command_debug_nop, HF_IN_SHUTDOWN, "debug_nop");