$ ./demo
$ hostinfo
Mach kernel version:
Darwin Kernel Version 8.11.0: Wed Oct 10 18:26:00 PDT 2007; root:xnu-792.24.17~1/RELEASE_PPC
Kernel configured for a single processor only.
1 processor is physically available.
Processor type: ppc7450 (PowerPC 7450)
Processor active: 0
Primary memory available: 2.00 gigabytes
Default processor set: 63 tasks, 161 threads, 1 processors
Load average: 1.20, Mach factor: 0.06
$ gcc --version
gcc (GCC) 14.2.0
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ cat hello.go
package main
func main() {
println("hellorld")
}
$ cat tools/buildgo
#!/bin/bash
PRG=$1
BIN=${PRG%.go}
go1-4/pkg/tool/darwin_ppc/9g -S "${PRG}" > "${BIN}.out"
go1-4/pkg/tool/darwin_ppc/9l -o "${BIN}" "${BIN}.9"
$ file go1-4/pkg/tool/darwin_ppc/9g
go1-4/pkg/tool/darwin_ppc/9g: Mach-O executable ppc
$ file go1-4/pkg/tool/darwin_ppc/9l
go1-4/pkg/tool/darwin_ppc/9l: Mach-O executable ppc
$ rm -f hello hello.9 hello.out
$ ls -l hello*
-rw-r--r-- 1 andrew andrew 51 Mar 19 22:40 hello.go
$ ./tools/buildgo hello.go
$ ls -l hello*
-rwxr-xr-x 1 andrew andrew 796000 Mar 19 22:51 hello
-rw-r--r-- 1 andrew andrew 1939 Mar 19 22:51 hello.9
-rw-r--r-- 1 andrew andrew 51 Mar 19 22:40 hello.go
-rw-r--r-- 1 andrew andrew 4976 Mar 19 22:51 hello.out
$ file hello
hello: Mach-O executable ppc
$ pynm hello | grep main
00000000000790c8 T _main
0000000000002088 T main.init
00000000000bc926 B main.initdone.
0000000000002000 T main.main
000000000002d0f8 T runtime.main
0000000000097518 R runtime.main.f
000000000007e348 T runtime.main_init
000000000007e350 T runtime.main_main
$ ./tools/godiag.py --binary=hello inspect --func main.main
=== main.main @ 0x00002000 (34 instrs) ===
00002000: 807e0008 lwz r3,8(r30)
00002004: 7c030840 cmplw r3,r1
00002008: 41800014 blt +20 (0x0000201c)
0000200c: 7ca802a6 mflr r5
00002010: 48052391 bl +336784 (0x000543a0) ; runtime.morestack_noctxt
00002014: 7c000278 xor r0,r0,r0
00002018: 4bffffe8 b -24 (0x00002000) ; main.main
0000201c: 7fe802a6 mflr r31
00002020: 97e1fff0 stwu r31,-16(r1)
00002024: 7c000278 xor r0,r0,r0
00002028: 3fe00009 lis r31,9
0000202c: 38ffe810 addi r7,r31,-6128
00002030: 7ce73b78 or r7,r7,r7
00002034: 7ce83b78 or r8,r7,r7
00002038: 38e10004 addi r7,r1,4
0000203c: 7ce73b78 or r7,r7,r7
00002040: 3908fffc addi r8,r8,-4
00002044: 38e7fffc addi r7,r7,-4
00002048: 85280004 lwzu r9,4(r8)
0000204c: 95270004 stwu r9,4(r7)
00002050: 85280004 lwzu r9,4(r8)
00002054: 95270004 stwu r9,4(r7)
00002058: 3be10004 addi r31,r1,4
0000205c: 7fe0fb78 or r0,r31,r31
00002060: 4802abc9 bl +175048 (0x0002cc28) ; runtime.printstring
00002064: 7c000278 xor r0,r0,r0
00002068: 3be10004 addi r31,r1,4
0000206c: 7fe0fb78 or r0,r31,r31
00002070: 480292c1 bl +168640 (0x0002b330) ; runtime.printnl
00002074: 7c000278 xor r0,r0,r0
00002078: 83e10000 lwz r31,0(r1)
0000207c: 7fe803a6 mtlr r31
00002080: 38210010 addi r1,r1,16
00002084: 4e800020 blr
$ ./hello 2>&1 | grep -vE "LOG|PA"
hellorld
$ cat demo
#!/bin/bash
for cmd in hostinfo "gcc --version" \
"cat hello.go" "cat tools/buildgo" \
"file go1-4/pkg/tool/darwin_ppc/9g" \
"file go1-4/pkg/tool/darwin_ppc/9l" \
"rm -f hello hello.9 hello.out" \
"ls -l hello*" \
"./tools/buildgo hello.go" \
"ls -l hello*" \
"file hello" \
"pynm hello | grep main" \
"./tools/godiag.py --binary=hello inspect --func main.main" \
'./hello 2>&1 | grep -vE "LOG|PA"' \
"cat demo"; do
echo "\$ $cmd"
eval "$cmd"
done
