From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:60495) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hJePj-0008K9-D0 for qemu-devel@nongnu.org; Thu, 25 Apr 2019 09:27:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hJePi-00014H-DS for qemu-devel@nongnu.org; Thu, 25 Apr 2019 09:27:47 -0400 Received: from mail-wr1-x444.google.com ([2a00:1450:4864:20::444]:34770) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hJePi-00011e-61 for qemu-devel@nongnu.org; Thu, 25 Apr 2019 09:27:46 -0400 Received: by mail-wr1-x444.google.com with SMTP id c6so24654912wrm.1 for ; Thu, 25 Apr 2019 06:27:43 -0700 (PDT) From: Jon Doron Date: Thu, 25 Apr 2019 16:26:25 +0300 Message-Id: <20190425132636.31636-11-arilou@gmail.com> In-Reply-To: <20190425132636.31636-1-arilou@gmail.com> References: <20190425132636.31636-1-arilou@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH v6 10/21] gdbstub: Implement get register (p pkt) with new infra List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Jon Doron Signed-off-by: Jon Doron --- gdbstub.c | 50 ++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 38 insertions(+), 12 deletions(-) diff --git a/gdbstub.c b/gdbstub.c index 49db09ef52..c439b8e796 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -1656,6 +1656,36 @@ static void handle_set_reg(GdbCmdContext *gdb_ctx, void *user_ctx) put_packet(gdb_ctx->s, "OK"); } +static void handle_get_reg(GdbCmdContext *gdb_ctx, void *user_ctx) +{ + int reg_size; + + /* + * Older gdb are really dumb, and don't use 'g' if 'p' is avaialable. + * This works, but can be very slow. Anything new enough to + * understand XML also knows how to use this properly. + */ + if (!gdb_has_xml) { + put_packet(gdb_ctx->s, ""); + return; + } + + if (!gdb_ctx->num_params) { + put_packet(gdb_ctx->s, "E14"); + return; + } + + reg_size = gdb_read_register(gdb_ctx->s->g_cpu, gdb_ctx->mem_buf, + gdb_ctx->params[0].val_ull); + if (!reg_size) { + put_packet(gdb_ctx->s, "E14"); + return; + } + + memtohex(gdb_ctx->str_buf, gdb_ctx->mem_buf, reg_size); + put_packet(gdb_ctx->s, gdb_ctx->str_buf); +} + static int gdb_handle_packet(GDBState *s, const char *line_buf) { CPUState *cpu; @@ -1885,18 +1915,14 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf) } break; case 'p': - /* Older gdb are really dumb, and don't use 'g' if 'p' is avaialable. - This works, but can be very slow. Anything new enough to - understand XML also knows how to use this properly. */ - if (!gdb_has_xml) - goto unknown_command; - addr = strtoull(p, (char **)&p, 16); - reg_size = gdb_read_register(s->g_cpu, mem_buf, addr); - if (reg_size) { - memtohex(buf, mem_buf, reg_size); - put_packet(s, buf); - } else { - put_packet(s, "E14"); + { + static const GdbCmdParseEntry get_reg_cmd_desc = { + .handler = handle_get_reg, + .cmd = "p", + .cmd_startswith = 1, + .schema = "L0" + }; + cmd_parser = &get_reg_cmd_desc; } break; case 'P': -- 2.20.1