thermosphere: copy paste lots of gdb luma files (but don't build them yet)

thermosphere/src/gdb/hio.c

@@ -0,0 +1,133 @@
+/*
+*   This file is part of Luma3DS.
+*   Copyright (C) 2016-2019 Aurora Wright, TuxSH
+*
+*   SPDX-License-Identifier: (MIT OR GPL-2.0-or-later)
+*/
+
+#include <string.h>
+
+#include "gdb/hio.h"
+#include "gdb/net.h"
+#include "gdb/mem.h"
+#include "gdb/debug.h"
+#include "fmt.h"
+
+bool GDB_FetchPackedHioRequest(GDBContext *ctx, u32 addr)
+{
+    u32 total = GDB_ReadTargetMemory(&ctx->currentHioRequest, ctx, addr, sizeof(PackedGdbHioRequest));
+    if (total != sizeof(PackedGdbHioRequest) || memcmp(&ctx->currentHioRequest.magic, "GDB\x00", 4) != 0)
+    {
+        memset(&ctx->currentHioRequest, 0, sizeof(PackedGdbHioRequest));
+        ctx->currentHioRequestTargetAddr = 0;
+        return false;
+    }
+    else
+    {
+        ctx->currentHioRequestTargetAddr = addr;
+        return true;
+    }
+}
+
+bool GDB_IsHioInProgress(GDBContext *ctx)
+{
+    return ctx->currentHioRequestTargetAddr != 0;
+}
+
+int GDB_SendCurrentHioRequest(GDBContext *ctx)
+{
+    char buf[256+1];
+    char tmp[32+1];
+    u32 nStr = 0;
+
+    sprintf(buf, "F%s", ctx->currentHioRequest.functionName);
+
+    for (u32 i = 0; i < 8 && ctx->currentHioRequest.paramFormat[i] != 0; i++)
+    {
+        switch (ctx->currentHioRequest.paramFormat[i])
+        {
+            case 'i':
+            case 'I':
+            case 'p':
+                sprintf(tmp, ",%lx", (u32)ctx->currentHioRequest.parameters[i]);
+                break;
+            case 'l':
+            case 'L':
+                sprintf(tmp, ",%llx", ctx->currentHioRequest.parameters[i]);
+                break;
+            case 's':
+                sprintf(tmp, ",%lx/%x", (u32)ctx->currentHioRequest.parameters[i], ctx->currentHioRequest.stringLengths[nStr++]);
+                break;
+            default:
+                tmp[0] = 0;
+                break;
+        }
+        strcat(buf, tmp);
+    }
+
+    return GDB_SendPacket(ctx, buf, strlen(buf));
+}
+
+GDB_DECLARE_HANDLER(HioReply)
+{
+    if (!GDB_IsHioInProgress(ctx))
+        return GDB_ReplyErrno(ctx, EPERM);
+    
+    // Reply in the form of Fretcode,errno,Ctrl-C flag;call-specific attachment
+    // "Call specific attachement" is always empty, though.
+
+    const char *pos = ctx->commandData;
+    u64 retval;
+
+    if (*pos == 0 || *pos == ',')
+        return GDB_ReplyErrno(ctx, EILSEQ);
+    else if (*pos == '-')
+    {
+        pos++;
+        ctx->currentHioRequest.retval = -1ll;
+    }
+    else if (*pos == '+')
+    {
+        pos++;
+        ctx->currentHioRequest.retval = 1;
+    }
+    else
+        ctx->currentHioRequest.retval = 1;
+
+    pos = GDB_ParseHexIntegerList64(&retval, pos, 1, ',');
+
+    if (pos == NULL)
+        return GDB_ReplyErrno(ctx, EILSEQ);
+
+    ctx->currentHioRequest.retval *= retval;
+    ctx->currentHioRequest.gdbErrno = 0;
+    ctx->currentHioRequest.ctrlC = false;
+
+    if (*pos != 0)
+    {
+        u32 errno_;
+        // GDB protocol technically allows errno to have a +/- prefix but this will never happen.
+        pos = GDB_ParseHexIntegerList(&errno_, ++pos, 1, ',');
+        ctx->currentHioRequest.gdbErrno = (int)errno_;
+        if (pos == NULL)
+            return GDB_ReplyErrno(ctx, EILSEQ);
+
+        if (*pos != 0)
+        {
+            if (*pos != 'C')
+                return GDB_ReplyErrno(ctx, EILSEQ);
+
+            ctx->currentHioRequest.ctrlC = true;
+        }
+    }
+
+    memset(ctx->currentHioRequest.paramFormat, 0, sizeof(ctx->currentHioRequest.paramFormat));
+
+    u32 total = GDB_WriteTargetMemory(ctx, &ctx->currentHioRequest, ctx->currentHioRequestTargetAddr, sizeof(PackedGdbHioRequest));
+
+    memset(&ctx->currentHioRequest, 0, sizeof(PackedGdbHioRequest));
+    ctx->currentHioRequestTargetAddr = 0;
+
+    GDB_ContinueExecution(ctx);
+    return total == sizeof(PackedGdbHioRequest) ? 0 : GDB_ReplyErrno(ctx, EFAULT);
+}