8l: fix crash writing Plan 9 binaries

Was crashing with GOOS=plan9 unless -s was passed.
Add symbols and line numbers to Plan 9 a.out.

R=rsc
CC=golang-dev
https://golang.org/cl/4080050

1 files changed, 56 insertions, 0 deletions

diff --git a/src/cmd/ld/symtab.c b/src/cmd/ld/symtab.c
index 26e4def648..eba0589c2a 100644
--- a/src/cmd/ld/symtab.c
+++ b/src/cmd/ld/symtab.c
@@ -136,6 +136,62 @@ asmelfsym32(void)
 	genasmsym(putelfsym32);
 }
 
+void
+putplan9sym(Sym *x, char *s, int t, vlong addr, vlong size, int ver, Sym *go)
+{
+	int i;
+		
+	switch(t) {
+	case 'T':
+	case 't':
+	case 'L':
+	case 'l':
+	case 'D':
+	case 'd':
+	case 'B':
+	case 'b':
+	case 'a':
+	case 'p':
+	
+	case 'f':
+	case 'z':
+	case 'Z':
+		
+	case 'm':
+		lputb(addr);
+		cput(t+0x80); /* 0x80 is variable length */
+		
+		if(t == 'z' || t == 'Z') {
+			cput(0);
+			for(i=1; s[i] != 0 || s[i+1] != 0; i += 2) {
+				cput(s[i]);
+				cput(s[i+1]);
+			}
+			cput(0);
+			cput(0);
+			i++;
+		} else {
+			/* skip the '<' in filenames */
+			if(t=='f')
+				s++;
+			
+			for(i=0; s[i]; i++)
+				cput(s[i]);
+			cput(0);
+		}
+		
+		symsize += 4 + 1 + i + 1;
+		break;
+	default:
+		return;
+	};	
+}
+
+void
+asmplan9sym(void)
+{
+	genasmsym(putplan9sym);
+}
 
 static Sym *symt;