xnu-7195.81.3.tar.gz

[apple/xnu.git] / bsd / kern / makesyscalls.sh

diff --git a/bsd/kern/makesyscalls.sh b/bsd/kern/makesyscalls.sh
index 29dd74b740ee48723f2ac22300d4b4d00cfe0e7a..a8d67728a21846ed1e4e08dad8e81ef2df181534 100755 (executable)
--- a/bsd/kern/makesyscalls.sh
+++ b/bsd/kern/makesyscalls.sh
@@ -35,6 +35,7 @@ output_syshdrfile=0
 output_syscalltablefile=0
 output_auditevfile=0
 output_tracecodes=0
+output_systrace=0
 
 use_stdout=0
 
@@ -50,7 +51,7 @@ syscallprefix="SYS_"
 switchname="sysent"
 namesname="syscallnames"
 tracecodename="syscall.codes"
-
+systraceargsfile="systrace_args.c"
 # tmp files:
 syslegal="sysent.syslegal.$$"
 sysent="sysent.switch.$$"
@@ -61,10 +62,13 @@ syscallnamestempfile="syscallnamesfile.$$"
 syshdrtempfile="syshdrtempfile.$$"
 audittempfile="audittempfile.$$"
 tracecodetempfile="tracecodetempfile.$$"
+systraceargstempfile="systraceargstempfile.$$"
+systraceargdesctempfile="systraceargdesctempfile.$$"
+systracerettempfile="systracerettempfile.$$"
 
-trap "rm $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile $audittempfile $tracecodetempfile" 0
+trap "rm $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile $audittempfile $tracecodetempfile $systraceargstempfile $systraceargdesctempfile $systracerettempfile" 0
 
-touch $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile $audittempfile $tracecodetempfile
+touch $syslegal $sysent $sysinc $sysarg $sysprotoend $syscallnamestempfile $syshdrtempfile $audittempfile $tracecodetempfile $systraceargstempfile $systraceargdesctempfile $systracerettempfile
 
 case $# in
     0)
@@ -93,6 +97,9 @@ if [ -n "$1" ]; then
        audit)
            output_auditevfile=1
            ;;
+       systrace)
+           output_systrace=1
+           ;;
        trace)
            output_tracecodes=1
            use_stdout=1
@@ -141,12 +148,16 @@ s/\$//g
                syscallnamestempfile = \"$syscallnamestempfile\"
                syshdrfile = \"$syshdrfile\"
                syshdrtempfile = \"$syshdrtempfile\"
+               systraceargstempfile = \"$systraceargstempfile\"
+               systraceargdesctempfile = \"$systraceargdesctempfile\"
+               systracerettempfile = \"$systracerettempfile\"
                audittempfile = \"$audittempfile\"
                tracecodetempfile = \"$tracecodetempfile\"
                syscallprefix = \"$syscallprefix\"
                switchname = \"$switchname\"
                namesname = \"$namesname\"
                infile = \"$input_file\"
+               infilepretty = \"${input_file#"$TARGET"}\"
                "'
 
                printf "/*\n" > syslegal
@@ -179,7 +190,7 @@ s/\$//g
                printf " * \n" > syslegal
                printf " * System call switch table.\n *\n" > syslegal
                printf " * DO NOT EDIT-- this file is automatically generated.\n" > syslegal
-               printf " * created from %s\n */\n\n", infile > syslegal
+               printf " * created from %s\n */\n\n", infilepretty > syslegal
        }
        NR == 1 {
                printf "\n/* The casts are bogus but will do for now. */\n" > sysent
@@ -233,6 +244,19 @@ s/\$//g
                printf "#include <bsm/audit_kevents.h>\n\n" > audittempfile
                printf "#if CONFIG_AUDIT\n\n" > audittempfile
                printf "au_event_t sys_au_event[] = {\n" > audittempfile
+
+               printf "/*\n * System call argument to DTrace register array conversion.\n */\n" > systraceargstempfile
+               printf "#include <sys/systrace_args.h>\n" > systraceargstempfile
+               printf "void\nsystrace_args(int sysnum, void *params, uint64_t *uarg)\n{\n" > systraceargstempfile
+               printf "\tint64_t *iarg  = (int64_t *) uarg;\n" > systraceargstempfile
+               printf "\tswitch (sysnum) {\n" > systraceargstempfile
+
+               printf "void\nsystrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systraceargdesctempfile
+               printf "\tswitch (sysnum) {\n" > systraceargdesctempfile
+
+               printf "void\nsystrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz)\n{\n\tconst char *p = NULL;\n" > systracerettempfile
+               printf "\tswitch (sysnum) {\n" > systracerettempfile
+
                next
        }
        NF == 0 || $1 ~ /^;/ {
@@ -248,6 +272,9 @@ s/\$//g
                print > syscallnamestempfile
                print > sysprotoend
                print > audittempfile
+               print > systraceargstempfile
+               print > systraceargdesctempfile
+               print > systracerettempfile
                savesyscall = syscall_num
                skip_for_header = 0
                next
@@ -258,6 +285,9 @@ s/\$//g
                print > syscallnamestempfile
                print > sysprotoend
                print > audittempfile
+               print > systraceargstempfile
+               print > systraceargdesctempfile
+               print > systracerettempfile
                syscall_num = savesyscall
                skip_for_header = 1
                next
@@ -268,6 +298,9 @@ s/\$//g
                print > syscallnamestempfile
                print > sysprotoend
                print > audittempfile
+               print > systraceargstempfile
+               print > systraceargdesctempfile
+               print > systracerettempfile
                skip_for_header = 0
                next
        }
@@ -377,6 +410,9 @@ s/\$//g
                current_field++
                funcname = $current_field
                argalias = funcname "_args"
+               if (substr(argalias, 1, 4) == "sys_") {
+                       argalias = substr(argalias, 5)
+               }
                current_field++ # bump past function name
 
                if ($current_field != "(")
@@ -467,6 +503,40 @@ s/\$//g
                size32 = 0
 
                if ((funcname != "nosys" && funcname != "enosys") || (syscall_num == 0 && funcname == "nosys")) {
+                       printf("\t/* %s */\n\tcase %d: {\n", funcname, syscall_num) > systraceargstempfile
+                       printf("\t/* %s */\n\tcase %d:\n", funcname, syscall_num) > systraceargdesctempfile
+                       printf("\t/* %s */\n\tcase %d:\n", funcname, syscall_num) > systracerettempfile
+                       if (argc > 0) {
+                               printf("\t\tswitch(ndx) {\n") > systraceargdesctempfile
+                               printf("\t\tstruct %s *p = params;\n", argalias) > systraceargstempfile
+                               for (i = 1; i <= argc; i++) {
+                                       arg = argtype[i]
+                                       sub("__restrict$", "", arg)
+                                       if (index(arg, "*") > 0)
+                                               printf("\t\tcase %d:\n\t\t\tp = \"userland %s\";\n\t\t\tbreak;\n", i - 1, arg) > systraceargdesctempfile
+                                       else
+                                               printf("\t\tcase %d:\n\t\t\tp = \"%s\";\n\t\t\tbreak;\n", i - 1, arg) > systraceargdesctempfile
+                                       if (index(arg, "*") > 0 || arg == "caddr_t")
+                        printf("\t\tuarg[%d] = (uint64_t) p->%s; /* %s */\n", \
+                                                       i - 1, \
+                                                       argname[i], arg) > systraceargstempfile
+                                       else if (substr(arg, 1, 1) == "u" || arg == "size_t")
+                        printf("\t\tuarg[%d] = (uint64_t) p->%s; /* %s */\n", \
+                                                       i - 1, \
+                                                       argname[i], arg) > systraceargstempfile
+                                       else
+                        printf("\t\tiarg[%d] = (int64_t) p->%s; /* %s */\n", \
+                                                       i - 1, \
+                                                       argname[i], arg) > systraceargstempfile
+                               }
+                               printf("\t\tdefault:\n\t\t\tbreak;\n\t\t};\n") > systraceargdesctempfile
+
+                       }
+                       printf("\t\tbreak;\n\t}\n", argc) > systraceargstempfile
+                       printf("\t\tif (ndx == 0 || ndx == 1)\n") > systracerettempfile
+                       printf("\t\t\tp = \"%s\";\n", returntype) > systracerettempfile
+                       printf("\t\tbreak;\n") > systracerettempfile
+                       printf("\t\tbreak;\n") > systraceargdesctempfile
                        if (argc != 0) {
                                if (add_sysproto_entry == 1) {
                                        printf("struct %s {\n", argalias) > sysarg
@@ -615,6 +685,9 @@ s/\$//g
                # output to syscalls.c
                if (add_sysnames_entry == 1) {
                        tempname = funcname
+                       if (substr(tempname, 1, 4) == "sys_") {
+                               tempname = substr(tempname, 5)
+                       }
                        if (funcname == "nosys" || funcname == "enosys") {
                                if (syscall_num == 0)
                                        tempname = "syscall"
@@ -635,6 +708,9 @@ s/\$//g
                # output to syscalls.h
                if (add_sysheader_entry == 1) {
                        tempname = funcname
+                       if (substr(tempname, 1, 4) == "sys_") {
+                               tempname = substr(tempname, 5)
+                       }
                        if (syscall_num == 0) {
                                tempname = "syscall"
                        }
@@ -696,7 +772,7 @@ s/\$//g
                printf("\n#endif /* !%s */\n", sysproto_h) > sysprotoend
 
                printf("};\n") > sysent
-               printf("unsigned int    nsysent = sizeof(sysent) / sizeof(sysent[0]);\n") > sysent
+               printf("const unsigned int nsysent = sizeof(sysent) / sizeof(sysent[0]);\n") > sysent
 
                printf("};\n") > syscallnamestempfile
                printf("#define\t%sMAXSYSCALL\t%d\n", syscallprefix, syscall_num) \
@@ -707,13 +783,14 @@ s/\$//g
                printf("#endif /* !%s */\n", syscall_h) > syshdrtempfile
                printf("};\n\n") > audittempfile
                printf("#endif /* AUDIT */\n") > audittempfile
+
+               printf "\tdefault:\n\t\tbreak;\n\t};\n}\n" > systraceargstempfile
+               printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systraceargdesctempfile
+               printf "\tdefault:\n\t\tbreak;\n\t};\n\tif (p != NULL)\n\t\tstrlcpy(desc, p, descsz);\n}\n" > systracerettempfile
        } '
 
-# define value in syscall table file to permit redifintion because of the way
-# __private_extern__ (doesn't) work.
 if [ $output_syscalltablefile -eq 1 ]; then
     cat $syslegal > $syscalltablefile
-    printf "#define __INIT_SYSENT_C__ 1\n" >> $syscalltablefile
     cat $sysinc $sysent >> $syscalltablefile
 fi
 
@@ -733,6 +810,12 @@ if [ $output_auditevfile -eq 1 ]; then
     cat $syslegal $audittempfile > $auditevfile
 fi
 
+if [ $output_systrace -eq 1 ]; then
+       cat $systraceargstempfile > $systraceargsfile
+       cat $systraceargdesctempfile >> $systraceargsfile
+       cat $systracerettempfile >> $systraceargsfile
+fi
+
 if [ $output_tracecodes -eq 1 ]; then
        if [ $use_stdout -eq 1 ]; then
                cat $tracecodetempfile
@@ -740,3 +823,4 @@ if [ $output_tracecodes -eq 1 ]; then
                cat $tracecodetempfile > $tracecodename
        fi
 fi
+