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[Qemu-devel] [PULL 41/52] gdbstub: Implement get register (p pkt) with n
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [PULL 41/52] gdbstub: Implement get register (p pkt) with new infra |
Date: |
Fri, 7 Jun 2019 10:05:40 +0100 |
From: Jon Doron <address@hidden>
Signed-off-by: Jon Doron <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Alex Bennée <address@hidden>
diff --git a/gdbstub.c b/gdbstub.c
index 630f931765..63809b2ab9 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -1672,6 +1672,36 @@ 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;
@@ -1901,18 +1931,14 @@ 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
- [Qemu-devel] [PULL 43/52] gdbstub: Implement read memory (m pkt) with new infra, (continued)
- [Qemu-devel] [PULL 43/52] gdbstub: Implement read memory (m pkt) with new infra, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 13/52] tests/vm: python3 fixes, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 25/52] tests/vm: ubuntu.i386: apt proxy setup, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 27/52] cputlb: use uint64_t for interim values for unaligned load, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 44/52] gdbstub: Implement write all registers (G pkt) with new infra, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 50/52] gdbstub: Implement target halted (? pkt) with new infra, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 28/52] tests/tcg: better detect truncated reads, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 46/52] gdbstub: Implement file io (F pkt) with new infra, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 33/52] gdbstub: Add infrastructure to parse cmd packets, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 47/52] gdbstub: Implement step (s pkt) with new infra, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 41/52] gdbstub: Implement get register (p pkt) with new infra,
Alex Bennée <=
- [Qemu-devel] [PULL 35/52] gdbstub: Implement thread_alive (T pkt) with new infra, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 37/52] gdbstub: Implement continue with signal (C pkt) with new infra, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 16/52] tests/vm: run test builds on snapshot, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 34/52] gdbstub: Implement deatch (D pkt) with new infra, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 21/52] tests/vm: openbsd autoinstall, using serial console, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 22/52] tests/vm: freebsd autoinstall, using serial console, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 14/52] tests/vm: send proxy environment variables over ssh, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 31/52] MAINTAINERS: put myself forward for gdbstub, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 19/52] tests/vm: add DEBUG=1 to help text, Alex Bennée, 2019/06/07
- [Qemu-devel] [PULL 39/52] gdbstub: Implement breakpoint commands (Z/z pkt) with new infra, Alex Bennée, 2019/06/07