commit d68efc51bceae0ebcb0917fc3b90eb5af74ea76a
from: Benjamin Stürz <benni@stuerz.xyz>
date: Sat Jun 15 21:25:51 2024 UTC

print syscall name

commit - 6341b1fd7700790ff5d9f19b1de17e265f09bb8f
commit + d68efc51bceae0ebcb0917fc3b90eb5af74ea76a
blob - 7561b6e0eb05ea6fb1dc507ec5e7b4d01c95d937
blob + 038e3eabdf2b72e8a0eb09c150efc3ad81ad0ebf
--- Makefile
+++ Makefile
@@ -49,9 +49,8 @@ linurv: ${OBJ}
 
 src/ecall.o: src/syscalls.h
 
-src/syscalls.h: src/syscalls.inc
-	sed 's/^\.set \(SYS_[a-z0-9_]*\), \([0-9]*\)$$/#define \1 \2/'	\
-		< src/syscalls.inc > $@
+src/syscalls.h: src/syscalls.inc src/gensyscalls.sh
+	sh src/gensyscalls.sh < src/syscalls.inc > $@
 
 .c.o:
 	${CC} -c -o $@ $< ${CFLAGS}
blob - 5d28e24ab091d568cf3e09a303a34ae3e489aa35
blob + 01b46c983168538311f45df9dc221aa051b068db
--- src/ecall.c
+++ src/ecall.c
@@ -268,11 +268,14 @@ void ecall (void)
 	const u64 a4 = cpu_get (14);
 	const u64 a5 = cpu_get (15);
 	const u64 a7 = cpu_get (17);
+	const char *name = NULL;
 
+	if (a7 <= SYS_debug)
+		name = syscall_names[a7];
 
 	eprintf (
-			"ecall a7=%"PRIu64", a0=%"PRIu64", a1=%"PRIu64", a2=%"PRIu64", a3=%"PRIu64", a4=%"PRIu64", a5=%"PRIu64 "\n",
-			a7, a0, a1, a2, a3, a4, a5
+			"ecall a7=%"PRIu64" [%s], a0=%"PRIu64", a1=%"PRIu64", a2=%"PRIu64", a3=%"PRIu64", a4=%"PRIu64", a5=%"PRIu64 "\n",
+			a7, name, a0, a1, a2, a3, a4, a5
 	);
 
 	int tmp, tmp2;
blob - /dev/null
blob + 8d4341c40dea91f83b07060d89ba9bcf2e135337 (mode 755)
--- /dev/null
+++ src/gensyscalls.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+parse() {
+	sed '/^\(#.*\)\{0,\}$/d; s/^\.set SYS_\([^,]*\), \(.*\)$/\1=\2/'
+}
+
+format() {
+	code='
+BEGIN {
+	print "/* !!! THIS FILE IS AUTOGENERATED !!! */\n";
+}
+
+/^[^=]+=[0-9]+$/ {
+	printf "#define SYS_%s %s\n", $1, $2;
+	syscalls[length(syscalls)+1] = $1;
+}
+
+END {
+	print "";
+	print "static const char *syscall_names[] = {";
+
+	for (i = 1; i <= length(syscalls); ++i) {
+		name = syscalls[i];
+		printf "\t[SYS_%s] = \"%s\",\n", name, name;
+	}
+
+	print "};";
+}
+'
+	awk -F= "$code"
+}
+parse | format