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authorTaylor Simpson <tsimpson@quicinc.com>2021-02-07 23:45:55 -0600
committerRichard Henderson <richard.henderson@linaro.org>2021-02-18 07:48:22 -0800
commita00cfed0ed9c366a383fe39c2d283362ebaaefd3 (patch)
tree087fdc61f33e292afc67855702b5f182e13098fc /disas
parent45183ccd72363f295f0d87cf33faf43f6d686261 (diff)
downloadqemu-a00cfed0ed9c366a383fe39c2d283362ebaaefd3.zip
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Hexagon (disas) disassembler
Add hexagon to disas/meson.build Add disas/hexagon.c Add hexagon to include/disas/dis-asm.h Signed-off-by: Taylor Simpson <tsimpson@quicinc.com> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <1612763186-18161-6-git-send-email-tsimpson@quicinc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'disas')
-rw-r--r--disas/hexagon.c65
-rw-r--r--disas/meson.build1
2 files changed, 66 insertions, 0 deletions
diff --git a/disas/hexagon.c b/disas/hexagon.c
new file mode 100644
index 0000000..3c24e2a
--- /dev/null
+++ b/disas/hexagon.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * QEMU Hexagon Disassembler
+ */
+
+#include "qemu/osdep.h"
+#include "disas/dis-asm.h"
+#include "target/hexagon/cpu_bits.h"
+
+/*
+ * We will disassemble a packet with up to 4 instructions, so we need
+ * a hefty size buffer.
+ */
+#define PACKET_BUFFER_LEN 1028
+
+int print_insn_hexagon(bfd_vma memaddr, struct disassemble_info *info)
+{
+ uint32_t words[PACKET_WORDS_MAX];
+ bool found_end = false;
+ GString *buf = g_string_sized_new(PACKET_BUFFER_LEN);
+ int i, len;
+
+ for (i = 0; i < PACKET_WORDS_MAX && !found_end; i++) {
+ int status = (*info->read_memory_func)(memaddr + i * sizeof(uint32_t),
+ (bfd_byte *)&words[i],
+ sizeof(uint32_t), info);
+ if (status) {
+ if (i > 0) {
+ break;
+ }
+ (*info->memory_error_func)(status, memaddr, info);
+ return status;
+ }
+ if (is_packet_end(words[i])) {
+ found_end = true;
+ }
+ }
+
+ if (!found_end) {
+ (*info->fprintf_func)(info->stream, "<invalid>");
+ return PACKET_WORDS_MAX * sizeof(uint32_t);
+ }
+
+ len = disassemble_hexagon(words, i, memaddr, buf);
+ (*info->fprintf_func)(info->stream, "%s", buf->str);
+ g_string_free(buf, true);
+
+ return len;
+}
diff --git a/disas/meson.build b/disas/meson.build
index da341a5..4c8da01 100644
--- a/disas/meson.build
+++ b/disas/meson.build
@@ -6,6 +6,7 @@ common_ss.add(when: 'CONFIG_ARM_A64_DIS', if_true: files('arm-a64.cc'))
common_ss.add_all(when: 'CONFIG_ARM_A64_DIS', if_true: libvixl_ss)
common_ss.add(when: 'CONFIG_ARM_DIS', if_true: files('arm.c'))
common_ss.add(when: 'CONFIG_CRIS_DIS', if_true: files('cris.c'))
+common_ss.add(when: 'CONFIG_HEXAGON_DIS', if_true: files('hexagon.c'))
common_ss.add(when: 'CONFIG_HPPA_DIS', if_true: files('hppa.c'))
common_ss.add(when: 'CONFIG_I386_DIS', if_true: files('i386.c'))
common_ss.add(when: 'CONFIG_LM32_DIS', if_true: files('lm32.c'))