xref: /openbmc/qemu/target/xtensa/import_core.sh (revision d36f7de8) 
1#! /bin/bash -e
2
3OVERLAY="$1"
4NAME="$2"
5FREQ=40000
6BASE=$(dirname "$0")
7TARGET="$BASE"/core-$NAME
8
9[ $# -ge 2 -a -f "$OVERLAY" ] || { cat <<EOF
10Usage: $0 overlay-archive-to-import core-name [frequency-in-KHz]
11    overlay-archive-to-import:  file name of xtensa-config-overlay.tar.gz
12                                to import configuration from.
13    core-name:                  QEMU name of the imported core. Must be valid
14                                C identifier.
15    frequency-in-KHz:           core frequency (40MHz if not specified).
16EOF
17exit
18}
19
20[ $# -ge 3 ] && FREQ="$3"
21mkdir -p "$TARGET"
22tar -xf "$OVERLAY" -C "$TARGET" --strip-components=1 \
23    --xform='s/core/core-isa/' config/core.h
24tar -xf "$OVERLAY" -O gdb/xtensa-config.c | \
25    sed -n '1,/*\//p;/XTREG/,/XTREG_END/p' > "$TARGET"/gdb-config.inc.c
26#
27# Fix up known issues in the xtensa-modules.c
28#
29tar -xf "$OVERLAY" -O binutils/xtensa-modules.c | \
30    sed -e 's/\(xtensa_opcode_encode_fn.*\[\] =\)/static \1/' \
31        -e '/^int num_bypass_groups()/,/}/d' \
32        -e '/^int num_bypass_group_chunks()/,/}/d' \
33        -e '/^uint32 \*bypass_entry(int i)/,/}/d' \
34        -e '/^#include "ansidecl.h"/d' \
35        -e '/^Slot_[a-zA-Z0-9_]\+_decode (const xtensa_insnbuf insn)/,/^}/s/^  return 0;$/  return XTENSA_UNDEFINED;/' \
36        -e 's/#include <xtensa-isa.h>/#include "xtensa-isa.h"/' \
37    > "$TARGET"/xtensa-modules.inc.c
38
39cat <<EOF > "${TARGET}.c"
40#include "qemu/osdep.h"
41#include "cpu.h"
42#include "exec/gdbstub.h"
43#include "qemu-common.h"
44#include "qemu/host-utils.h"
45
46#include "core-$NAME/core-isa.h"
47#include "overlay_tool.h"
48
49#define xtensa_modules xtensa_modules_$NAME
50#include "core-$NAME/xtensa-modules.inc.c"
51
52static XtensaConfig $NAME __attribute__((unused)) = {
53    .name = "$NAME",
54    .gdb_regmap = {
55        .reg = {
56#include "core-$NAME/gdb-config.inc.c"
57        }
58    },
59    .isa_internal = &xtensa_modules,
60    .clock_freq_khz = $FREQ,
61    DEFAULT_SECTIONS
62};
63
64REGISTER_CORE($NAME)
65EOF
66
67grep -q core-${NAME}.o "$BASE"/Makefile.objs || \
68    echo "obj-y += core-${NAME}.o" >> "$BASE"/Makefile.objs
69