From da6f343032cb01597dc7866e66f091adf3243a62 Mon Sep 17 00:00:00 2001 From: Michael Smith Date: Sat, 20 Nov 2021 03:10:50 +0000 Subject: Initial public snapshot With code from Bill. Thanks Bill! --- src/dbg.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 src/dbg.c (limited to 'src/dbg.c') diff --git a/src/dbg.c b/src/dbg.c new file mode 100644 index 0000000..ca4e08e --- /dev/null +++ b/src/dbg.c @@ -0,0 +1,49 @@ +/* + * Copyright © 2021 Michael Smith + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR + * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +#include "con_.h" +#include "intdefs.h" +#include "ppmagic.h" +#include "udis86.h" + +void dbg_hexdump(char *name, const void *p, int len) { + struct con_colour nice_colour = {160, 64, 200, 255}; // a nice purple colour + con_colourmsg(&nice_colour, "Hex dump \"%s\" (%p):", name, p); + for (const uchar *cp = p; cp - (uchar *)p < len; ++cp) { + // group into words and wrap every 8 words + switch ((cp - (uchar *)p) & 31) { + case 0: con_msg("\n"); break; + CASES(4, 8, 12, 16, 20, 24, 28): con_msg(" "); + } + con_colourmsg(&nice_colour, "%02X ", *cp); + } + con_msg("\n"); +} + +void dbg_asmdump(char *name, const void *p, int len) { + struct con_colour nice_colour = {40, 160, 140, 255}; // a nice teal colour + struct ud udis; + ud_init(&udis); + ud_set_mode(&udis, 32); + ud_set_input_buffer(&udis, p, len); + ud_set_syntax(&udis, UD_SYN_INTEL); + con_colourmsg(&nice_colour, "Disassembly \"%s\" (%p)\n", name, p); + while (ud_disassemble(&udis)) { + con_colourmsg(&nice_colour, " %s\n", ud_insn_asm(&udis)); + } +} + +// vi: sw=4 ts=4 noet tw=80 cc=80 -- cgit v1.2.3