target/xtensa/import_core.sh

   1 #! /bin/bash -e
   2
   3 OVERLAY="$1"
   4 NAME="$2"
   5 FREQ=40000
   6 BASE=$(dirname "$0")
   7 TARGET="$BASE"/core-$NAME
   8
   9 [ $# -ge 2 -a -f "$OVERLAY" ] || { cat <<EOF
  10 Usage: $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).
  16 EOF
  17 exit
  18 }
  19
  20 [ $# -ge 3 ] && FREQ="$3"
  21 mkdir -p "$TARGET"
  22 tar -xf "$OVERLAY" -C "$TARGET" --strip-components=1 \
  23     --xform='s/core/core-isa/' config/core.h
  24 tar -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 #
  29 tar -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
  39 cat <<EOF > "${TARGET}.c"
  40 #include "qemu/osdep.h"
  41 #include "cpu.h"
  42 #include "exec/exec-all.h"
  43 #include "exec/gdbstub.h"
  44 #include "qemu-common.h"
  45 #include "qemu/host-utils.h"
  46
  47 #include "core-$NAME/core-isa.h"
  48 #include "overlay_tool.h"
  49
  50 #define xtensa_modules xtensa_modules_$NAME
  51 #include "core-$NAME/xtensa-modules.inc.c"
  52
  53 static XtensaConfig $NAME __attribute__((unused)) = {
  54     .name = "$NAME",
  55     .gdb_regmap = {
  56         .reg = {
  57 #include "core-$NAME/gdb-config.inc.c"
  58         }
  59     },
  60     .isa_internal = &xtensa_modules,
  61     .clock_freq_khz = $FREQ,
  62     DEFAULT_SECTIONS
  63 };
  64
  65 REGISTER_CORE($NAME)
  66 EOF
  67
  68 grep -q core-${NAME}.o "$BASE"/Makefile.objs || \
  69     echo "obj-y += core-${NAME}.o" >> "$BASE"/Makefile.objs