Add support for riscv64 blobs

Author: smaeul

Makefile

@@ -3,9 +3,15 @@
 # See LICENSE in the project directory for license terms.
 #
 
+ARCH_arisc	 = or1k
+ARCH_nbrom	 = arm
+ARCH_rvbrom	 = riscv64
+ARCH_sbrom	 = arm
+
 CROSS_aarch64	 = aarch64-linux-musl-
 CROSS_arm	 = arm-linux-musleabi-
 CROSS_or1k	 = or1k-linux-musl-
+CROSS_riscv64	 = riscv64-linux-musl-
 
 BLOB		?= */*
 BLOBS		 = $(sort $(wildcard $(BLOB)/blob.hex))
@@ -16,7 +22,7 @@ OUTPUT		 = $(foreach d,$(DIRS),$(d)annotated.s $(d)blob.s $(d)callgraph.svg)
 SECTIONS	 = $(addsuffix sections,$(DIRS))
 SYMBOLS		 = $(addsuffix symbols,$(DIRS))
 
-arch		 = $(if $(findstring arisc,$(lastword $(1:/= ))),or1k,arm)
+arch		 = $(ARCH_$(firstword $(subst _, ,$(notdir $1))))
 cross_compile	 = $(CROSS_$(call arch,$(1)))
 env		 = env ARCH=$(call arch,$(1)) CROSS_COMPILE=$(call cross_compile,$(1))
 

scripts/bin2elf

@@ -21,7 +21,11 @@ case "$ARCH" in
   *)    WORDSIZE=32 ;;
 esac
 case "$ARCH" in
-  arm)  BFDNAME=elf${WORDSIZE}-${ENDIANNESS}${ARCH} ;;
+  riscv*) ARCH=riscv ;;
+esac
+case "$ARCH" in
+  arm|riscv)
+        BFDNAME=elf${WORDSIZE}-${ENDIANNESS}${ARCH} ;;
   *)    BFDNAME=elf${WORDSIZE}-${ARCH} ;;
 esac
 

scripts/callgraph

@@ -13,13 +13,16 @@ CROSS_COMPILE=${CROSS_COMPILE:-${ARCH}-linux-musl-}
 # Generated, but might need adjustment
 case "$ARCH" in
   arm)
-    CALL_INSN=bl
-    TAIL_INSN=b
+    CALL_INSN="bl "
+    TAIL_INSN="b "
     ;;
   or1k)
-    CALL_INSN=l.jal
-    TAIL_INSN=l.j
+    CALL_INSN="l.jal "
+    TAIL_INSN="l.j "
     ;;
+  riscv*)
+    CALL_INSN="jal ra,"
+    TAIL_INSN="j "
 esac
 
 # Command-line parameters
@@ -39,17 +42,17 @@ strict digraph calls {
 EOF
 grep -F -e '>:' -e "$CALL_INSN" -e "$TAIL_INSN" "$input_file" |
 while read -r line; do
-  if [[ $line =~ ^[[:xdigit:]]{8}\ \<([[:alnum:]_]+)\>:$ ]]; then
+  if [[ $line =~ ^[[:xdigit:]]{8,16}\ \<([[:alnum:]_]+)\>:$ ]]; then
     caller=${BASH_REMATCH[1]}
     [[ $caller =~ ^__.+si3$ || $caller =~ ^nop_ ]] && continue
     printf '  %s\n' "$caller" >> "$output_file"
-  elif [[ $line =~ ^.*\ ${CALL_INSN}\ +[[:xdigit:]]+\ \<([[:alnum:]_]+)\>$ ]]; then
+  elif [[ $line =~ ^.*\ ${CALL_INSN}+[[:xdigit:]]+\ \<([[:alnum:]_]+)\>$ ]]; then
     callee=${BASH_REMATCH[1]}
-    [[ $callee =~ ^__.+si3$ || $callee =~ printf$ ]] && continue
+    [[ $callee =~ ^__.+si3$ || $callee =~ printf$ || $callee =~ pwrstate$ ]] && continue
     printf '  %s -> %s\n' "$caller" "$callee" >> "$output_file"
-  elif [[ $line =~ ^.*\ ${TAIL_INSN}\ +[[:xdigit:]]+\ \<([[:alnum:]_]+)\>$ ]]; then
+  elif [[ $line =~ ^.*\ ${TAIL_INSN}+[[:xdigit:]]+\ \<([[:alnum:]_]+)\>$ ]]; then
     callee=${BASH_REMATCH[1]}
-    [[ $callee =~ ^__.+si3$ || $callee =~ printf$ ]] && continue
+    [[ $callee =~ ^__.+si3$ || $callee =~ printf$ || $callee =~ pwrstate$ ]] && continue
     printf '  %s -> %s [style = dashed]\n' "$caller" "$callee" >> "$output_file"
   fi
 done