[dynarmic] allow better dtrace diagnostics for code - do not clobber %rbp and save frame pointer (#2653)

Saving the %rbp pointer allows us to backref previous stackframes easily

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2653
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

tools/dtrace-tool.sh

@@ -1,59 +0,0 @@
-#!/usr/local/bin/bash -ex
-
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-# Basic script to run dtrace sampling over the program (requires Flamegraph)
-# Usage is either running as: ./dtrace-tool.sh pid (then input the pid of the process)
-# Or just run directly with: ./dtrace-tool.sh <command>
-
-FLAMEGRAPH_DIR=".."
-fail() {
-    printf '%s\n' "$1" >&2
-    exit "${2-1}"
-}
-
-[ -f $FLAMEGRAPH_DIR/FlameGraph/stackcollapse.pl ] || fail 'Where is flamegraph?'
-#[ which dtrace ] || fail 'Needs DTrace installed'
-
-read -r "Sampling Hz [800]: " TRACE_CFG_HZ
-if [ -z "${TRACE_CFG_HZ}" ]; then
-    TRACE_CFG_HZ=800
-fi
-
-read -r "Sampling time [5] sec: " TRACE_CFG_TIME
-if [ -z "${TRACE_CFG_TIME}" ]; then
-    TRACE_CFG_TIME=5
-fi
-
-TRACE_FILE=dtrace-out.user_stacks
-TRACE_FOLD=dtrace-out.fold
-TRACE_SVG=dtrace-out.svg
-ps
-
-if [ "$1" = 'pid' ]; then
-    read -r "PID: " TRACE_CFG_PID
-    sudo echo 'Sudo!'
-else
-    if [ -f "$1" ] && [ "$1" ]; then
-    	fail 'Usage: ./tools/dtrace-profile.sh <path to program>'
-    fi
-
-    printf "Executing: "
-    echo "$@"
-    sudo echo 'Sudo!'
-    "$@" &
-    TRACE_CFG_PID=$!
-fi
-
-TRACE_PROBE="profile-${TRACE_CFG_HZ} /pid == ${TRACE_CFG_PID} && arg1/ { @[ustack()] = count(); } tick-${TRACE_CFG_TIME}s { exit(0); }"
-
-rm -- $TRACE_SVG || echo 'Skip'
-
-sudo dtrace -x ustackframes=100 -Z -n "$TRACE_PROBE" -o $TRACE_FILE 2>/dev/null || exit
-
-perl $FLAMEGRAPH_DIR/FlameGraph/stackcollapse.pl $TRACE_FILE > $TRACE_FOLD || exit
-perl $FLAMEGRAPH_DIR/FlameGraph/flamegraph.pl $TRACE_FOLD > $TRACE_SVG || exit
-
-sudo chmod 0666 $TRACE_FILE
-rm -- $TRACE_FILE $TRACE_FOLD