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20 hours ago •
wasm3
wasm3
WIP: Add support for snprintf()
Hello @vshymanskyy
I've added snprintf() support to format a string and put it into a string buffer, as well as some improvements for supporting %u and %X. However, you may face some strange corruption issue if you call printf() after a snprintf(), but not vice-versa.
Here's a C code demo for WASM:
#include <stdint.h>
#define WASM_EXPORT __attribute__((used)) __attribute__((visibility ("default")))
#define WASM_EXPORT_AS(NAME) WASM_EXPORT __attribute__((export_name(NAME)))
#define WASM_IMPORT(MODULE,NAME) __attribute__((import_module(MODULE))) __attribute__((import_name(NAME)))
WASM_IMPORT("env","printf")
int printf(const char* fmt, ...);
WASM_IMPORT("env", "snprintf")
int snprintf(char* out_buf, int buf_len, const char *fmt, ...);
WASM_EXPORT_AS("_start")
void run() {
const char* buff = "print";
printf("chr: ");
for (int i=0; i<5; i++) {
printf("%c,", buff[i]);
}
printf("\n");
printf("int: %d\n", 1234);
printf("hex: %x\n", 0xABCD);
printf("Message 1: %s %d %u %x %X\n", "test", -123, 123, 0xabcd, 0xABCD);
char buf[32] = { 0 };
snprintf(buf, sizeof(buf), "sprintf() Result: %x", 123123);
printf("Message 2: %s %d %u %x %X\n", "test", -123, 123, 0xabcd, 0xABCD);
printf("Print snprintf result: %s", buf);
}
The compile command is:
clang --target=wasm32 --no-standard-libraries -fno-builtin-printf -fno-builtin-snprintf -Wl,--no-entry -Wl,--allow-undefined \
-Wl,--stack-first -Wl,-z,stack-size=5120 \
-g0 -s -O3 -o test-printf.wasm \
Here's the result on Ubuntu 20.04 with clang-10 from Ubuntu official software repo:
As you can see, the printf() works fine until it hits sprintf().
But actually, the snprintf() works fine on ESP32 if there's no printf() after it.
I don't know what caused this issue. Maybe I've got a stupid typo somewhere. But anyway, here is the progress for printf family support. You can also have a read for my code if you would like to.
Regards, Jackson
Here's another demo C code for WASM I've done:
int start() {
printf("Message 1: %s %d %u %x %X\n", "test", -123, 123, 0xabcd, 0xABCD);
char buf[32] = { 0 };
snprintf(buf, sizeof(buf), "sprintf() Result: %x", 0xabcdef);
printf("Print snprintf result: %s", buf);
return 0;
}
Then I added some logs at my snprintf(), including the fmt, the lengths and their pointers.
I've also tried copying the strings in case the memory gets freed.
Here's a log at my snprintf() and I've got this:
I (1609) printf-jmh: printf: fmt: 0x3f80907c Message 1: %s %d %u %x %X
W (1619) printf-jmh: 0x3f80907c 4d 65 73 73 61 67 65 20 31 3a 20 25 73 20 25 64 |Message 1: %s %d|
W (1629) printf-jmh: 0x3f80908c 20 25 75 20 25 78 20 25 58 0a 00 74 65 73 74 00 | %u %x %X..test.|
W (1639) printf-jmh: 0x3f80909c 73 70 72 69 6e 74 66 28 29 20 52 65 73 75 6c 74 |sprintf() Result|
W (1649) printf-jmh: 0x3f8090ac 3a 20 25 78 00 50 72 69 6e 74 20 73 6e 70 72 69 |: %x.Print snpri|
W (1659) printf-jmh: 0x3f8090bc 6e 74 66 20 72 65 73 75 6c 74 3a 20 25 73 00 00 |ntf result: %s..|
W (1669) printf-jmh: 0x3f8090cc 00 00 00 00 |....|
Message 1: test -123 123 abcd ABCD
I (1679) printf-jmh: on start: fmt: sprintf() Result: %x 0x3f80909c
I (1679) printf-jmh: on start: buf len: 32; ; 0x3f80905c
I (1689) printf-jmh: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1699) printf-jmh: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1699) printf-jmh: on end: fmt: sprintf() Result: %x 0x3f80909c, len left: 8
I (1709) printf-jmh: printf: fmt: 0x3f8090b1 Print snprintf result: %s
W (1719) printf-jmh: 0x3f8090b1 50 72 69 6e 74 20 73 6e 70 72 69 6e 74 66 20 72 |Print snprintf r|
W (1729) printf-jmh: 0x3f8090c1 65 73 75 6c 74 3a 20 25 73 00 00 00 00 00 00 00 |esult: %s.......|
W (1739) printf-jmh: 0x3f8090d1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
W (1749) printf-jmh: 0x3f8090e1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
W (1759) printf-jmh: 0x3f8090f1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
W (1769) printf-jmh: 0x3f809101 00 00 00 00 |....|
Print snprintf result: sprintf() Result: abcdefI (1779) main: start() executed
So that shows the snprintf() is working...
However, if I remove the logs, garbage contents will show up...It's so weird....
I've just realised if I compiled the Wasm3 in debug build (with -DCMAKE_BUILD_TYPE=DEBUG) on my host machine, this corruption issue disappeared. I haven't tested on ESP32 for now, will do that soon.
Maybe this can be a compiler toolchain related issue?
My environment details are listed below:
- Clang for compiling WebAssembly binary: version 10.0.0-4ubuntu1
- LLD for WASM linker: 10.0.0
- Host GCC for compiling Wasm3 runtime: 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)
- Host OS: Ubuntu 20.04.2
And my ESP stuff:
- ESP32's compiler: 8.4.0 (crosstool-NG esp-2020r3)
- ESP-IDF: latest master
@vshymanskyy Any ideas?
Here's a Release build with -DDEBUG=1 and all logging enabled explicitly:
runtime | new stack: 0x55f82996dea0
parse | load module: 725 bytes
parse | found magic + version
parse | ** Type [3]
parse | type 0: (i32, i32) -> i32
parse | type 1: (i32, i32, i32, i32) -> i32
parse | type 2: () ->
parse | ** Import [2]
parse | kind: 0 'env.printf'
parse | kind: 0 'env.snprintf'
parse | ** Function [1]
parse | skipped section type: 4
parse | ** Memory [1]
parse | ** Global [1]
parse | global: [0] i32 mutable: 1
compile | 0 | 0x41 .. i32.const
compile | | .......... (const i32 = 5120)
compile | 1 | 0x0b end
parse | ** Export [2]
parse | index: 0; kind: 2; export: 'memory';
parse | index: 2; kind: 0; export: '_start';
parse | ** Code [1]
parse | code size: 467
parse | 1 locals; type: 'i32'
parse | ** Data [1]
compile | 0 | 0x41 .. i32.const
compile | | .......... (const i32 = 5120)
compile | 1 | 0x0b end
parse | segment [0] memory: 0; expr-size: 4; size: 136
runtime | resized old: 0x55f82997f790; mem: 0x55f82997f790; length: 65536; pages: 1
runtime | initializing global: 0
runtime | new page: 0x55f82998f7c8; seq: 1; bytes: 4096; lines: 509
emit | acquire page: 1
compile | 0 | 0x41 .. i32.const
emit | 0x55f82998f7c8: i32.const
stack | i0
compile | | .......... (const i32 = 5120)
compile | 1 | 0x0b end
emit | 0x55f82998f7e0: return
compile | unwound stack top: 1
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x7ffd1e2a9fa0; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f82998f7c8 | i32.const
code | 0x55f82998f7d0 | 0x1400
code | 0x55f82998f7d8 | (nil)
code | 0x55f82998f7e0 | return
code | ---------------------------------------------------------------------------------------
code | free-lines: 505
emit | acquire page: 1
compile | 0 | 0x41 .. i32.const
emit | 0x55f82998f7c8: i32.const
stack | i0
compile | | .......... (const i32 = 5120)
compile | 1 | 0x0b end
emit | 0x55f82998f7e0: return
compile | unwound stack top: 1
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x7ffd1e2a9f80; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f82998f7c8 | i32.const
code | 0x55f82998f7d0 | 0x1400
code | 0x55f82998f7d8 | (nil)
code | 0x55f82998f7e0 | return
code | ---------------------------------------------------------------------------------------
code | free-lines: 505
runtime | loading data segment: 0; size: 136; offset: 5120
emit | acquire page: 1
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x55f82996b380; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f82998f7c8 | 0x55f827e4d300
code | 0x55f82998f7d0 | 0x55f827e49e20
code | 0x55f82998f7d8 | 0x55f82997e6d0
code | 0x55f82998f7e0 | (nil)
code | ---------------------------------------------------------------------------------------
code | free-lines: 505
emit | acquire page: 1
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x55f82996b380; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f82998f7c8 | 0x55f827e4d300
code | 0x55f82998f7d0 | 0x55f827e49e20
code | 0x55f82998f7d8 | 0x55f82997e6d0
code | 0x55f82998f7e0 | (nil)
code | 0x55f82998f7e8 | 0x55f827e4d300
code | 0x55f82998f7f0 | 0x55f827e49610
code | 0x55f82998f7f8 | 0x55f82997e748
code | 0x55f82998f800 | (nil)
code | ---------------------------------------------------------------------------------------
code | free-lines: 501
compile | compiling: '_start'; wasm-size: 467; numArgs: 0; return: nil
emit | acquire page: 1
compile | pushing locals. count: 1; type: i32
stack | i0
compile | estimated constant slots: 60
compile | start stack index: 1
emit | 0x55f82998f808: Entry
compile | 0 | 0x23 .. global.get
emit | 0x55f82998f818: GetGlobal_s32
stack | i61
compile | 1 | 0x41 .. i32.const
stack | i61 ic1
compile | | .......... (const i32 = 240)
compile | 2 | 0x6b .. i32.sub
emit | 0x55f82998f830: i32.sub
stack | (r0) ir0
compile | 3 | 0x22 .. local.tee
emit | 0x55f82998f848: SetSlot
compile | 4 | 0x24 .. global.set
emit | 0x55f82998f858: SetGlobal
compile | 5 | 0x41 .. i32.const
stack | ic2
compile | | .......... (const i32 = 5120)
compile | 6 | 0x41 .. i32.const
stack | ic2 ic3
compile | | .......... (const i32 = 0)
compile | 7 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998f868: CopySlot_32
emit | 0x55f82998f880: CopySlot_32
stack | i62
emit | 0x55f82998f898: call
compile | 8 | 0x1a .. drop
stack |
compile | 9 | 0x20 .. local.get
stack | iL0
compile | 10 | 0x41 .. i32.const
stack | iL0 ic4
compile | | .......... (const i32 = 112)
compile | 11 | 0x36 .. i32.store
compile | | .......... (offset = 192)
emit | 0x55f82998f8b0: i32.store
compile | 12 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 13 | 0x20 .. local.get
stack | ic5 iL0
compile | 14 | 0x41 .. i32.const
stack | ic5 iL0 ic6
compile | | .......... (const i32 = 192)
compile | 15 | 0x6a .. i32.add
emit | 0x55f82998f8d0: i32.add
stack | (r0) ic5 ir0
compile | 16 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998f8e8: SetSlot
emit | 0x55f82998f8f8: CopySlot_32
stack | i62
emit | 0x55f82998f910: call
compile | 17 | 0x1a .. drop
stack |
compile | 18 | 0x20 .. local.get
stack | iL0
compile | 19 | 0x41 .. i32.const
stack | iL0 ic7
compile | | .......... (const i32 = 114)
compile | 20 | 0x36 .. i32.store
compile | | .......... (offset = 176)
emit | 0x55f82998f928: i32.store
compile | 21 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 22 | 0x20 .. local.get
stack | ic5 iL0
compile | 23 | 0x41 .. i32.const
stack | ic5 iL0 ic8
compile | | .......... (const i32 = 176)
compile | 24 | 0x6a .. i32.add
emit | 0x55f82998f948: i32.add
stack | (r0) ic5 ir0
compile | 25 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998f960: SetSlot
emit | 0x55f82998f970: CopySlot_32
stack | i62
emit | 0x55f82998f988: call
compile | 26 | 0x1a .. drop
stack |
compile | 27 | 0x20 .. local.get
stack | iL0
compile | 28 | 0x41 .. i32.const
stack | iL0 ic9
compile | | .......... (const i32 = 105)
compile | 29 | 0x36 .. i32.store
compile | | .......... (offset = 160)
emit | 0x55f82998f9a0: i32.store
compile | 30 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 31 | 0x20 .. local.get
stack | ic5 iL0
compile | 32 | 0x41 .. i32.const
stack | ic5 iL0 ic10
compile | | .......... (const i32 = 160)
compile | 33 | 0x6a .. i32.add
emit | 0x55f82998f9c0: i32.add
stack | (r0) ic5 ir0
compile | 34 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998f9d8: SetSlot
emit | 0x55f82998f9e8: CopySlot_32
stack | i62
emit | 0x55f82998fa00: call
compile | 35 | 0x1a .. drop
stack |
compile | 36 | 0x20 .. local.get
stack | iL0
compile | 37 | 0x41 .. i32.const
stack | iL0 ic11
compile | | .......... (const i32 = 110)
compile | 38 | 0x36 .. i32.store
compile | | .......... (offset = 144)
emit | 0x55f82998fa18: i32.store
compile | 39 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 40 | 0x20 .. local.get
stack | ic5 iL0
compile | 41 | 0x41 .. i32.const
stack | ic5 iL0 ic12
compile | | .......... (const i32 = 144)
compile | 42 | 0x6a .. i32.add
emit | 0x55f82998fa38: i32.add
stack | (r0) ic5 ir0
compile | 43 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998fa50: SetSlot
emit | 0x55f82998fa60: CopySlot_32
stack | i62
emit | 0x55f82998fa78: call
compile | 44 | 0x1a .. drop
stack |
compile | 45 | 0x20 .. local.get
stack | iL0
compile | 46 | 0x41 .. i32.const
stack | iL0 ic13
compile | | .......... (const i32 = 116)
compile | 47 | 0x36 .. i32.store
compile | | .......... (offset = 128)
emit | 0x55f82998fa90: i32.store
compile | 48 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 49 | 0x20 .. local.get
stack | ic5 iL0
compile | 50 | 0x41 .. i32.const
stack | ic5 iL0 ic14
compile | | .......... (const i32 = 128)
compile | 51 | 0x6a .. i32.add
emit | 0x55f82998fab0: i32.add
stack | (r0) ic5 ir0
compile | 52 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998fac8: SetSlot
emit | 0x55f82998fad8: CopySlot_32
stack | i62
emit | 0x55f82998faf0: call
compile | 53 | 0x1a .. drop
stack |
compile | 54 | 0x41 .. i32.const
stack | ic15
compile | | .......... (const i32 = 5130)
compile | 55 | 0x41 .. i32.const
stack | ic15 ic3
compile | | .......... (const i32 = 0)
compile | 56 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998fb08: CopySlot_32
emit | 0x55f82998fb20: CopySlot_32
stack | i62
emit | 0x55f82998fb38: call
compile | 57 | 0x1a .. drop
stack |
compile | 58 | 0x20 .. local.get
stack | iL0
compile | 59 | 0x41 .. i32.const
stack | iL0 ic16
compile | | .......... (const i32 = 1234)
compile | 60 | 0x36 .. i32.store
compile | | .......... (offset = 112)
emit | 0x55f82998fb50: i32.store
compile | 61 | 0x41 .. i32.const
stack | ic17
compile | | .......... (const i32 = 5132)
compile | 62 | 0x20 .. local.get
stack | ic17 iL0
compile | 63 | 0x41 .. i32.const
stack | ic17 iL0 ic4
compile | | .......... (const i32 = 112)
compile | 64 | 0x6a .. i32.add
emit | 0x55f82998fb70: i32.add
stack | (r0) ic17 ir0
compile | 65 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998fb88: SetSlot
emit | 0x55f82998fb98: CopySlot_32
stack | i62
emit | 0x55f82998fbb0: call
compile | 66 | 0x1a .. drop
stack |
compile | 67 | 0x20 .. local.get
stack | iL0
compile | 68 | 0x41 .. i32.const
stack | iL0 ic18
compile | | .......... (const i32 = 43981)
compile | 69 | 0x36 .. i32.store
compile | | .......... (offset = 96)
emit | 0x55f82998fbc8: i32.store
compile | 70 | 0x41 .. i32.const
stack | ic19
compile | | .......... (const i32 = 5141)
compile | 71 | 0x20 .. local.get
stack | ic19 iL0
compile | 72 | 0x41 .. i32.const
stack | ic19 iL0 ic20
compile | | .......... (const i32 = 96)
compile | 73 | 0x6a .. i32.add
emit | 0x55f82998fbe8: i32.add
stack | (r0) ic19 ir0
compile | 74 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998fc00: SetSlot
emit | 0x55f82998fc10: CopySlot_32
stack | i62
emit | 0x55f82998fc28: call
compile | 75 | 0x1a .. drop
stack |
compile | 76 | 0x20 .. local.get
stack | iL0
compile | 77 | 0x42 .. i64.const
stack | iL0 Ic22
compile | | .......... (const i64 = 188896956689357)
compile | 78 | 0x37 .. i64.store
compile | | .......... (offset = 76)
emit | 0x55f82998fc40: i64.store
compile | 79 | 0x20 .. local.get
stack | iL0
compile | 80 | 0x42 .. i64.const
stack | iL0 Ic24
compile | | .......... (const i64 = 532575944581)
compile | 81 | 0x37 .. i64.store
compile | | .......... (offset = 68)
emit | 0x55f82998fc60: i64.store
compile | 82 | 0x20 .. local.get
stack | iL0
compile | 83 | 0x41 .. i32.const
stack | iL0 ic21
compile | | .......... (const i32 = 5177)
compile | 84 | 0x36 .. i32.store
compile | | .......... (offset = 64)
emit | 0x55f82998fc80: i32.store
compile | 85 | 0x41 .. i32.const
stack | ic26
compile | | .......... (const i32 = 5150)
compile | 86 | 0x20 .. local.get
stack | ic26 iL0
compile | 87 | 0x41 .. i32.const
stack | ic26 iL0 ic27
compile | | .......... (const i32 = 64)
compile | 88 | 0x6a .. i32.add
emit | 0x55f82998fca0: i32.add
stack | (r0) ic26 ir0
compile | 89 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998fcb8: SetSlot
emit | 0x55f82998fcc8: CopySlot_32
stack | i62
emit | 0x55f82998fce0: call
compile | 90 | 0x1a .. drop
stack |
compile | 91 | 0x20 .. local.get
stack | iL0
compile | 92 | 0x41 .. i32.const
stack | iL0 ic28
compile | | .......... (const i32 = 232)
compile | 93 | 0x6a .. i32.add
emit | 0x55f82998fcf8: i32.add
stack | (r0) ir0
compile | 94 | 0x42 .. i64.const
stack | (r0) ir0 Ic30
compile | | .......... (const i64 = 0)
compile | 95 | 0x37 .. i64.store
compile | | .......... (offset = 0)
emit | 0x55f82998fd10: i64.store
compile | 96 | 0x20 .. local.get
stack | iL0
compile | 97 | 0x41 .. i32.const
stack | iL0 ic29
compile | | .......... (const i32 = 224)
compile | 98 | 0x6a .. i32.add
emit | 0x55f82998fd28: i32.add
stack | (r0) ir0
compile | 99 | 0x42 .. i64.const
stack | (r0) ir0 Ic30
compile | | .......... (const i64 = 0)
compile | 100 | 0x37 .. i64.store
compile | | .......... (offset = 0)
emit | 0x55f82998fd40: i64.store
compile | 101 | 0x20 .. local.get
stack | iL0
compile | 102 | 0x41 .. i32.const
stack | iL0 ic32
compile | | .......... (const i32 = 123123)
compile | 103 | 0x36 .. i32.store
compile | | .......... (offset = 48)
emit | 0x55f82998fd58: i32.store
compile | 104 | 0x20 .. local.get
stack | iL0
compile | 105 | 0x42 .. i64.const
stack | iL0 Ic30
compile | | .......... (const i64 = 0)
compile | 106 | 0x37 .. i64.store
compile | | .......... (offset = 216)
emit | 0x55f82998fd78: i64.store
compile | 107 | 0x20 .. local.get
stack | iL0
compile | 108 | 0x42 .. i64.const
stack | iL0 Ic30
compile | | .......... (const i64 = 0)
compile | 109 | 0x37 .. i64.store
compile | | .......... (offset = 208)
emit | 0x55f82998fd98: i64.store
compile | 110 | 0x20 .. local.get
stack | iL0
compile | 111 | 0x41 .. i32.const
stack | iL0 ic33
compile | | .......... (const i32 = 208)
compile | 112 | 0x6a .. i32.add
emit | 0x55f82998fdb8: i32.add
stack | (r0) ir0
compile | 113 | 0x41 .. i32.const
stack | (r0) ir0 ic34
compile | | .......... (const i32 = 32)
compile | 114 | 0x41 .. i32.const
stack | (r0) ir0 ic34 ic35
compile | | .......... (const i32 = 5182)
compile | 115 | 0x20 .. local.get
stack | (r0) ir0 ic34 ic35 iL0
compile | 116 | 0x41 .. i32.const
stack | (r0) ir0 ic34 ic35 iL0 ic36
compile | | .......... (const i32 = 48)
compile | 117 | 0x6a .. i32.add
emit | 0x55f82998fdd0: SetSlot
emit | 0x55f82998fde0: i32.add
stack | (r0) i61 ic34 ic35 ir0
compile | 118 | 0x10 .. call
compile | | .......... (func= 'snprintf'; args= 4)
emit | 0x55f82998fdf8: SetSlot
emit | 0x55f82998fe08: CopySlot_32
emit | 0x55f82998fe20: CopySlot_32
emit | 0x55f82998fe38: CopySlot_32
stack | i62
emit | 0x55f82998fe50: call
compile | 119 | 0x1a .. drop
stack |
compile | 120 | 0x20 .. local.get
stack | iL0
compile | 121 | 0x42 .. i64.const
stack | iL0 Ic22
compile | | .......... (const i64 = 188896956689357)
compile | 122 | 0x37 .. i64.store
compile | | .......... (offset = 28)
emit | 0x55f82998fe68: i64.store
compile | 123 | 0x20 .. local.get
stack | iL0
compile | 124 | 0x42 .. i64.const
stack | iL0 Ic24
compile | | .......... (const i64 = 532575944581)
compile | 125 | 0x37 .. i64.store
compile | | .......... (offset = 20)
emit | 0x55f82998fe88: i64.store
compile | 126 | 0x20 .. local.get
stack | iL0
compile | 127 | 0x41 .. i32.const
stack | iL0 ic21
compile | | .......... (const i32 = 5177)
compile | 128 | 0x36 .. i32.store
compile | | .......... (offset = 16)
emit | 0x55f82998fea8: i32.store
compile | 129 | 0x41 .. i32.const
stack | ic37
compile | | .......... (const i32 = 5203)
compile | 130 | 0x20 .. local.get
stack | ic37 iL0
compile | 131 | 0x41 .. i32.const
stack | ic37 iL0 ic38
compile | | .......... (const i32 = 16)
compile | 132 | 0x6a .. i32.add
emit | 0x55f82998fec8: i32.add
stack | (r0) ic37 ir0
compile | 133 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998fee0: SetSlot
emit | 0x55f82998fef0: CopySlot_32
stack | i62
emit | 0x55f82998ff08: call
compile | 134 | 0x1a .. drop
stack |
compile | 135 | 0x20 .. local.get
stack | iL0
compile | 136 | 0x20 .. local.get
stack | iL0 iL0
compile | 137 | 0x41 .. i32.const
stack | iL0 iL0 ic33
compile | | .......... (const i32 = 208)
compile | 138 | 0x6a .. i32.add
emit | 0x55f82998ff20: i32.add
stack | (r0) iL0 ir0
compile | 139 | 0x36 .. i32.store
compile | | .......... (offset = 0)
emit | 0x55f82998ff38: i32.store
compile | 140 | 0x41 .. i32.const
stack | ic39
compile | | .......... (const i32 = 5230)
compile | 141 | 0x20 .. local.get
stack | ic39 iL0
compile | 142 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f82998ff50: CopySlot_32
emit | 0x55f82998ff68: CopySlot_32
stack | i62
emit | 0x55f82998ff80: call
compile | 143 | 0x1a .. drop
stack |
compile | 144 | 0x20 .. local.get
stack | iL0
compile | 145 | 0x41 .. i32.const
stack | iL0 ic1
compile | | .......... (const i32 = 240)
compile | 146 | 0x6a .. i32.add
emit | 0x55f82998ff98: i32.add
stack | (r0) ir0
compile | 147 | 0x24 .. global.set
emit | 0x55f82998ffb0: SetGlobal
compile | 148 | 0x0b end
emit | 0x55f82998ffc0: return
compile | unique constant slots: 39; unused slots: 21
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x55f82996b380; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f82998f7c8 | 0x55f827e4d300
code | 0x55f82998f7d0 | 0x55f827e49e20
code | 0x55f82998f7d8 | 0x55f82997e6d0
code | 0x55f82998f7e0 | (nil)
code | 0x55f82998f7e8 | 0x55f827e4d300
code | 0x55f82998f7f0 | 0x55f827e49610
code | 0x55f82998f7f8 | 0x55f82997e748
code | 0x55f82998f800 | (nil)
code | 0x55f82998f808 | Entry
code | 0x55f82998f810 | 0x55f82997e7c0
code | 0x55f82998f818 | GetGlobal_s32
code | 0x55f82998f820 | 0x55f82997e850
code | 0x55f82998f828 | 0x3d
code | 0x55f82998f830 | i32.sub
code | 0x55f82998f838 | 0x1
code | 0x55f82998f840 | 0x3d
code | 0x55f82998f848 | SetSlot
code | 0x55f82998f850 | (nil)
code | 0x55f82998f858 | SetGlobal
code | 0x55f82998f860 | 0x55f82997e850
code | 0x55f82998f868 | CopySlot_32
code | 0x55f82998f870 | 0x40
code | 0x55f82998f878 | 0x3
code | 0x55f82998f880 | CopySlot_32
code | 0x55f82998f888 | 0x3e
code | 0x55f82998f890 | 0x2
code | 0x55f82998f898 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998f8b0 | i32.store
code | 0x55f82998f8b8 | 0x4
code | 0x55f82998f8c0 | (nil)
code | 0x55f82998f8c8 | 0xc0
code | 0x55f82998f8d0 | i32.add
code | 0x55f82998f8d8 | 0x6
code | 0x55f82998f8e0 | (nil)
code | 0x55f82998f8e8 | SetSlot
code | 0x55f82998f8f0 | 0x40
code | 0x55f82998f8f8 | CopySlot_32
code | 0x55f82998f900 | 0x3e
code | 0x55f82998f908 | 0x5
code | 0x55f82998f910 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998f928 | i32.store
code | 0x55f82998f930 | 0x7
code | 0x55f82998f938 | (nil)
code | 0x55f82998f940 | 0xb0
code | 0x55f82998f948 | i32.add
code | 0x55f82998f950 | 0x8
code | 0x55f82998f958 | (nil)
code | 0x55f82998f960 | SetSlot
code | 0x55f82998f968 | 0x40
code | 0x55f82998f970 | CopySlot_32
code | 0x55f82998f978 | 0x3e
code | 0x55f82998f980 | 0x5
code | 0x55f82998f988 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998f9a0 | i32.store
code | 0x55f82998f9a8 | 0x9
code | 0x55f82998f9b0 | (nil)
code | 0x55f82998f9b8 | 0xa0
code | 0x55f82998f9c0 | i32.add
code | 0x55f82998f9c8 | 0xa
code | 0x55f82998f9d0 | (nil)
code | 0x55f82998f9d8 | SetSlot
code | 0x55f82998f9e0 | 0x40
code | 0x55f82998f9e8 | CopySlot_32
code | 0x55f82998f9f0 | 0x3e
code | 0x55f82998f9f8 | 0x5
code | 0x55f82998fa00 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998fa18 | i32.store
code | 0x55f82998fa20 | 0xb
code | 0x55f82998fa28 | (nil)
code | 0x55f82998fa30 | 0x90
code | 0x55f82998fa38 | i32.add
code | 0x55f82998fa40 | 0xc
code | 0x55f82998fa48 | (nil)
code | 0x55f82998fa50 | SetSlot
code | 0x55f82998fa58 | 0x40
code | 0x55f82998fa60 | CopySlot_32
code | 0x55f82998fa68 | 0x3e
code | 0x55f82998fa70 | 0x5
code | 0x55f82998fa78 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998fa90 | i32.store
code | 0x55f82998fa98 | 0xd
code | 0x55f82998faa0 | (nil)
code | 0x55f82998faa8 | 0x80
code | 0x55f82998fab0 | i32.add
code | 0x55f82998fab8 | 0xe
code | 0x55f82998fac0 | (nil)
code | 0x55f82998fac8 | SetSlot
code | 0x55f82998fad0 | 0x40
code | 0x55f82998fad8 | CopySlot_32
code | 0x55f82998fae0 | 0x3e
code | 0x55f82998fae8 | 0x5
code | 0x55f82998faf0 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998fb08 | CopySlot_32
code | 0x55f82998fb10 | 0x40
code | 0x55f82998fb18 | 0x3
code | 0x55f82998fb20 | CopySlot_32
code | 0x55f82998fb28 | 0x3e
code | 0x55f82998fb30 | 0xf
code | 0x55f82998fb38 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998fb50 | i32.store
code | 0x55f82998fb58 | 0x10
code | 0x55f82998fb60 | (nil)
code | 0x55f82998fb68 | 0x70
code | 0x55f82998fb70 | i32.add
code | 0x55f82998fb78 | 0x4
code | 0x55f82998fb80 | (nil)
code | 0x55f82998fb88 | SetSlot
code | 0x55f82998fb90 | 0x40
code | 0x55f82998fb98 | CopySlot_32
code | 0x55f82998fba0 | 0x3e
code | 0x55f82998fba8 | 0x11
code | 0x55f82998fbb0 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998fbc8 | i32.store
code | 0x55f82998fbd0 | 0x12
code | 0x55f82998fbd8 | (nil)
code | 0x55f82998fbe0 | 0x60
code | 0x55f82998fbe8 | i32.add
code | 0x55f82998fbf0 | 0x14
code | 0x55f82998fbf8 | (nil)
code | 0x55f82998fc00 | SetSlot
code | 0x55f82998fc08 | 0x40
code | 0x55f82998fc10 | CopySlot_32
code | 0x55f82998fc18 | 0x3e
code | 0x55f82998fc20 | 0x13
code | 0x55f82998fc28 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998fc40 | i64.store
code | 0x55f82998fc48 | 0x16
code | 0x55f82998fc50 | (nil)
code | 0x55f82998fc58 | 0x4c
code | 0x55f82998fc60 | i64.store
code | 0x55f82998fc68 | 0x18
code | 0x55f82998fc70 | (nil)
code | 0x55f82998fc78 | 0x44
code | 0x55f82998fc80 | i32.store
code | 0x55f82998fc88 | 0x15
code | 0x55f82998fc90 | (nil)
code | 0x55f82998fc98 | 0x40
code | 0x55f82998fca0 | i32.add
code | 0x55f82998fca8 | 0x1b
code | 0x55f82998fcb0 | (nil)
code | 0x55f82998fcb8 | SetSlot
code | 0x55f82998fcc0 | 0x40
code | 0x55f82998fcc8 | CopySlot_32
code | 0x55f82998fcd0 | 0x3e
code | 0x55f82998fcd8 | 0x1a
code | 0x55f82998fce0 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998fcf8 | i32.add
code | 0x55f82998fd00 | 0x1c
code | 0x55f82998fd08 | (nil)
code | 0x55f82998fd10 | i64.store
code | 0x55f82998fd18 | 0x1e
code | 0x55f82998fd20 | (nil)
code | 0x55f82998fd28 | i32.add
code | 0x55f82998fd30 | 0x1d
code | 0x55f82998fd38 | (nil)
code | 0x55f82998fd40 | i64.store
code | 0x55f82998fd48 | 0x1e
code | 0x55f82998fd50 | (nil)
code | 0x55f82998fd58 | i32.store
code | 0x55f82998fd60 | 0x20
code | 0x55f82998fd68 | (nil)
code | 0x55f82998fd70 | 0x30
code | 0x55f82998fd78 | i64.store
code | 0x55f82998fd80 | 0x1e
code | 0x55f82998fd88 | (nil)
code | 0x55f82998fd90 | 0xd8
code | 0x55f82998fd98 | i64.store
code | 0x55f82998fda0 | 0x1e
code | 0x55f82998fda8 | (nil)
code | 0x55f82998fdb0 | 0xd0
code | 0x55f82998fdb8 | i32.add
code | 0x55f82998fdc0 | 0x21
code | 0x55f82998fdc8 | (nil)
code | 0x55f82998fdd0 | SetSlot
code | 0x55f82998fdd8 | 0x3d
code | 0x55f82998fde0 | i32.add
code | 0x55f82998fde8 | 0x24
code | 0x55f82998fdf0 | (nil)
code | 0x55f82998fdf8 | SetSlot
code | 0x55f82998fe00 | 0x44
code | 0x55f82998fe08 | CopySlot_32
code | 0x55f82998fe10 | 0x42
code | 0x55f82998fe18 | 0x23
code | 0x55f82998fe20 | CopySlot_32
code | 0x55f82998fe28 | 0x40
code | 0x55f82998fe30 | 0x22
code | 0x55f82998fe38 | CopySlot_32
code | 0x55f82998fe40 | 0x3e
code | 0x55f82998fe48 | 0x3d
code | 0x55f82998fe50 | call 0x55f82998f7e8; stack-offset: 62
code | 0x55f82998fe68 | i64.store
code | 0x55f82998fe70 | 0x16
code | 0x55f82998fe78 | (nil)
code | 0x55f82998fe80 | 0x1c
code | 0x55f82998fe88 | i64.store
code | 0x55f82998fe90 | 0x18
code | 0x55f82998fe98 | (nil)
code | 0x55f82998fea0 | 0x14
code | 0x55f82998fea8 | i32.store
code | 0x55f82998feb0 | 0x15
code | 0x55f82998feb8 | (nil)
code | 0x55f82998fec0 | 0x10
code | 0x55f82998fec8 | i32.add
code | 0x55f82998fed0 | 0x26
code | 0x55f82998fed8 | (nil)
code | 0x55f82998fee0 | SetSlot
code | 0x55f82998fee8 | 0x40
code | 0x55f82998fef0 | CopySlot_32
code | 0x55f82998fef8 | 0x3e
code | 0x55f82998ff00 | 0x25
code | 0x55f82998ff08 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998ff20 | i32.add
code | 0x55f82998ff28 | 0x21
code | 0x55f82998ff30 | (nil)
code | 0x55f82998ff38 | i32.store
code | 0x55f82998ff40 | (nil)
code | 0x55f82998ff48 | (nil)
code | 0x55f82998ff50 | CopySlot_32
code | 0x55f82998ff58 | 0x40
code | 0x55f82998ff60 | (nil)
code | 0x55f82998ff68 | CopySlot_32
code | 0x55f82998ff70 | 0x3e
code | 0x55f82998ff78 | 0x27
code | 0x55f82998ff80 | call 0x55f82998f7c8; stack-offset: 62
code | 0x55f82998ff98 | i32.add
code | 0x55f82998ffa0 | 0x1
code | 0x55f82998ffa8 | (nil)
code | 0x55f82998ffb0 | SetGlobal
code | 0x55f82998ffb8 | 0x55f82997e850
code | 0x55f82998ffc0 | return
code | ---------------------------------------------------------------------------------------
code | free-lines: 253
chr: p,r,i,n,t,
int: 1234
hex: abcd
Message 1: test -123 123 abcd ABCD
Message 2: D1e0f3 -123 123 abcd ABCD
Native stack used: 16
Print snprintf result: sABCDpABCDrABCDiABCDnABCDtABCDfABCD(ABCD)ABCD ABCDRABCDeABCDsABCDuABCDlABCDtABCD:ABCD ABCD1e0f3 module | freeing module: .unnamed (funcs: 3; segments: 1)
runtime | freeing 1 pages from environment
code | free page: 1; 0x55f82998f7b0; util: 0.0%
And here's a Debug build's log, where you can see the snprintf() follows by printf() prints the correct result:
runtime | new stack: 0x55f3cc910ea0
parse | load module: 725 bytes
parse | found magic + version
parse | ** Type [3]
parse | type 0: (i32, i32) -> i32
parse | type 1: (i32, i32, i32, i32) -> i32
parse | type 2: () ->
parse | ** Import [2]
parse | kind: 0 'env.printf'
parse | kind: 0 'env.snprintf'
parse | ** Function [1]
parse | skipped section type: 4
parse | ** Memory [1]
parse | ** Global [1]
parse | global: [0] i32 mutable: 1
compile | 0 | 0x41 .. i32.const
compile | | .......... (const i32 = 5120)
compile | 1 | 0x0b end
parse | ** Export [2]
parse | index: 0; kind: 2; export: 'memory';
parse | index: 2; kind: 0; export: '_start';
parse | ** Code [1]
parse | code size: 467
parse | 1 locals; type: 'i32'
parse | ** Data [1]
compile | 0 | 0x41 .. i32.const
compile | | .......... (const i32 = 5120)
compile | 1 | 0x0b end
parse | segment [0] memory: 0; expr-size: 4; size: 136
runtime | resized old: 0x55f3cc922790; mem: 0x55f3cc922790; length: 65536; pages: 1
runtime | initializing global: 0
runtime | new page: 0x55f3cc9327c8; seq: 1; bytes: 4096; lines: 509
emit | acquire page: 1
compile | 0 | 0x41 .. i32.const
emit | 0x55f3cc9327c8: i32.const
stack | i0
compile | | .......... (const i32 = 5120)
compile | 1 | 0x0b end
emit | 0x55f3cc9327e0: return
compile | unwound stack top: 1
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x7ffef6cd5ac0; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f3cc9327c8 | i32.const
code | 0x55f3cc9327d0 | 0x1400
code | 0x55f3cc9327d8 | (nil)
code | 0x55f3cc9327e0 | return
code | ---------------------------------------------------------------------------------------
code | free-lines: 505
emit | acquire page: 1
compile | 0 | 0x41 .. i32.const
emit | 0x55f3cc9327c8: i32.const
stack | i0
compile | | .......... (const i32 = 5120)
compile | 1 | 0x0b end
emit | 0x55f3cc9327e0: return
compile | unwound stack top: 1
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x7ffef6cd5ac0; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f3cc9327c8 | i32.const
code | 0x55f3cc9327d0 | 0x1400
code | 0x55f3cc9327d8 | (nil)
code | 0x55f3cc9327e0 | return
code | ---------------------------------------------------------------------------------------
code | free-lines: 505
runtime | loading data segment: 0; size: 136; offset: 5120
emit | acquire page: 1
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x55f3cc90e380; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f3cc9327c8 | 0x55f3cc684216
code | 0x55f3cc9327d0 | 0x55f3cc680200
code | 0x55f3cc9327d8 | 0x55f3cc9216d0
code | 0x55f3cc9327e0 | (nil)
code | ---------------------------------------------------------------------------------------
code | free-lines: 505
emit | acquire page: 1
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x55f3cc90e380; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f3cc9327c8 | 0x55f3cc684216
code | 0x55f3cc9327d0 | 0x55f3cc680200
code | 0x55f3cc9327d8 | 0x55f3cc9216d0
code | 0x55f3cc9327e0 | (nil)
code | 0x55f3cc9327e8 | 0x55f3cc684216
code | 0x55f3cc9327f0 | 0x55f3cc67fd2d
code | 0x55f3cc9327f8 | 0x55f3cc921748
code | 0x55f3cc932800 | (nil)
code | ---------------------------------------------------------------------------------------
code | free-lines: 501
compile | compiling: '_start'; wasm-size: 467; numArgs: 0; return: nil
emit | acquire page: 1
compile | pushing locals. count: 1; type: i32
stack | i0
compile | estimated constant slots: 60
compile | start stack index: 1
emit | 0x55f3cc932808: Entry
compile | 0 | 0x23 .. global.get
emit | 0x55f3cc932818: GetGlobal_s32
stack | i61
compile | 1 | 0x41 .. i32.const
stack | i61 ic1
compile | | .......... (const i32 = 240)
compile | 2 | 0x6b .. i32.sub
emit | 0x55f3cc932830: i32.sub
stack | (r0) ir0
compile | 3 | 0x22 .. local.tee
emit | 0x55f3cc932848: SetSlot
compile | 4 | 0x24 .. global.set
emit | 0x55f3cc932858: SetGlobal
compile | 5 | 0x41 .. i32.const
stack | ic2
compile | | .......... (const i32 = 5120)
compile | 6 | 0x41 .. i32.const
stack | ic2 ic3
compile | | .......... (const i32 = 0)
compile | 7 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932868: CopySlot_32
emit | 0x55f3cc932880: CopySlot_32
stack | i62
emit | 0x55f3cc932898: call
compile | 8 | 0x1a .. drop
stack |
compile | 9 | 0x20 .. local.get
stack | iL0
compile | 10 | 0x41 .. i32.const
stack | iL0 ic4
compile | | .......... (const i32 = 112)
compile | 11 | 0x36 .. i32.store
compile | | .......... (offset = 192)
emit | 0x55f3cc9328b0: i32.store
compile | 12 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 13 | 0x20 .. local.get
stack | ic5 iL0
compile | 14 | 0x41 .. i32.const
stack | ic5 iL0 ic6
compile | | .......... (const i32 = 192)
compile | 15 | 0x6a .. i32.add
emit | 0x55f3cc9328d0: i32.add
stack | (r0) ic5 ir0
compile | 16 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc9328e8: SetSlot
emit | 0x55f3cc9328f8: CopySlot_32
stack | i62
emit | 0x55f3cc932910: call
compile | 17 | 0x1a .. drop
stack |
compile | 18 | 0x20 .. local.get
stack | iL0
compile | 19 | 0x41 .. i32.const
stack | iL0 ic7
compile | | .......... (const i32 = 114)
compile | 20 | 0x36 .. i32.store
compile | | .......... (offset = 176)
emit | 0x55f3cc932928: i32.store
compile | 21 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 22 | 0x20 .. local.get
stack | ic5 iL0
compile | 23 | 0x41 .. i32.const
stack | ic5 iL0 ic8
compile | | .......... (const i32 = 176)
compile | 24 | 0x6a .. i32.add
emit | 0x55f3cc932948: i32.add
stack | (r0) ic5 ir0
compile | 25 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932960: SetSlot
emit | 0x55f3cc932970: CopySlot_32
stack | i62
emit | 0x55f3cc932988: call
compile | 26 | 0x1a .. drop
stack |
compile | 27 | 0x20 .. local.get
stack | iL0
compile | 28 | 0x41 .. i32.const
stack | iL0 ic9
compile | | .......... (const i32 = 105)
compile | 29 | 0x36 .. i32.store
compile | | .......... (offset = 160)
emit | 0x55f3cc9329a0: i32.store
compile | 30 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 31 | 0x20 .. local.get
stack | ic5 iL0
compile | 32 | 0x41 .. i32.const
stack | ic5 iL0 ic10
compile | | .......... (const i32 = 160)
compile | 33 | 0x6a .. i32.add
emit | 0x55f3cc9329c0: i32.add
stack | (r0) ic5 ir0
compile | 34 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc9329d8: SetSlot
emit | 0x55f3cc9329e8: CopySlot_32
stack | i62
emit | 0x55f3cc932a00: call
compile | 35 | 0x1a .. drop
stack |
compile | 36 | 0x20 .. local.get
stack | iL0
compile | 37 | 0x41 .. i32.const
stack | iL0 ic11
compile | | .......... (const i32 = 110)
compile | 38 | 0x36 .. i32.store
compile | | .......... (offset = 144)
emit | 0x55f3cc932a18: i32.store
compile | 39 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 40 | 0x20 .. local.get
stack | ic5 iL0
compile | 41 | 0x41 .. i32.const
stack | ic5 iL0 ic12
compile | | .......... (const i32 = 144)
compile | 42 | 0x6a .. i32.add
emit | 0x55f3cc932a38: i32.add
stack | (r0) ic5 ir0
compile | 43 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932a50: SetSlot
emit | 0x55f3cc932a60: CopySlot_32
stack | i62
emit | 0x55f3cc932a78: call
compile | 44 | 0x1a .. drop
stack |
compile | 45 | 0x20 .. local.get
stack | iL0
compile | 46 | 0x41 .. i32.const
stack | iL0 ic13
compile | | .......... (const i32 = 116)
compile | 47 | 0x36 .. i32.store
compile | | .......... (offset = 128)
emit | 0x55f3cc932a90: i32.store
compile | 48 | 0x41 .. i32.const
stack | ic5
compile | | .......... (const i32 = 5126)
compile | 49 | 0x20 .. local.get
stack | ic5 iL0
compile | 50 | 0x41 .. i32.const
stack | ic5 iL0 ic14
compile | | .......... (const i32 = 128)
compile | 51 | 0x6a .. i32.add
emit | 0x55f3cc932ab0: i32.add
stack | (r0) ic5 ir0
compile | 52 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932ac8: SetSlot
emit | 0x55f3cc932ad8: CopySlot_32
stack | i62
emit | 0x55f3cc932af0: call
compile | 53 | 0x1a .. drop
stack |
compile | 54 | 0x41 .. i32.const
stack | ic15
compile | | .......... (const i32 = 5130)
compile | 55 | 0x41 .. i32.const
stack | ic15 ic3
compile | | .......... (const i32 = 0)
compile | 56 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932b08: CopySlot_32
emit | 0x55f3cc932b20: CopySlot_32
stack | i62
emit | 0x55f3cc932b38: call
compile | 57 | 0x1a .. drop
stack |
compile | 58 | 0x20 .. local.get
stack | iL0
compile | 59 | 0x41 .. i32.const
stack | iL0 ic16
compile | | .......... (const i32 = 1234)
compile | 60 | 0x36 .. i32.store
compile | | .......... (offset = 112)
emit | 0x55f3cc932b50: i32.store
compile | 61 | 0x41 .. i32.const
stack | ic17
compile | | .......... (const i32 = 5132)
compile | 62 | 0x20 .. local.get
stack | ic17 iL0
compile | 63 | 0x41 .. i32.const
stack | ic17 iL0 ic4
compile | | .......... (const i32 = 112)
compile | 64 | 0x6a .. i32.add
emit | 0x55f3cc932b70: i32.add
stack | (r0) ic17 ir0
compile | 65 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932b88: SetSlot
emit | 0x55f3cc932b98: CopySlot_32
stack | i62
emit | 0x55f3cc932bb0: call
compile | 66 | 0x1a .. drop
stack |
compile | 67 | 0x20 .. local.get
stack | iL0
compile | 68 | 0x41 .. i32.const
stack | iL0 ic18
compile | | .......... (const i32 = 43981)
compile | 69 | 0x36 .. i32.store
compile | | .......... (offset = 96)
emit | 0x55f3cc932bc8: i32.store
compile | 70 | 0x41 .. i32.const
stack | ic19
compile | | .......... (const i32 = 5141)
compile | 71 | 0x20 .. local.get
stack | ic19 iL0
compile | 72 | 0x41 .. i32.const
stack | ic19 iL0 ic20
compile | | .......... (const i32 = 96)
compile | 73 | 0x6a .. i32.add
emit | 0x55f3cc932be8: i32.add
stack | (r0) ic19 ir0
compile | 74 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932c00: SetSlot
emit | 0x55f3cc932c10: CopySlot_32
stack | i62
emit | 0x55f3cc932c28: call
compile | 75 | 0x1a .. drop
stack |
compile | 76 | 0x20 .. local.get
stack | iL0
compile | 77 | 0x42 .. i64.const
stack | iL0 Ic22
compile | | .......... (const i64 = 188896956689357)
compile | 78 | 0x37 .. i64.store
compile | | .......... (offset = 76)
emit | 0x55f3cc932c40: i64.store
compile | 79 | 0x20 .. local.get
stack | iL0
compile | 80 | 0x42 .. i64.const
stack | iL0 Ic24
compile | | .......... (const i64 = 532575944581)
compile | 81 | 0x37 .. i64.store
compile | | .......... (offset = 68)
emit | 0x55f3cc932c60: i64.store
compile | 82 | 0x20 .. local.get
stack | iL0
compile | 83 | 0x41 .. i32.const
stack | iL0 ic21
compile | | .......... (const i32 = 5177)
compile | 84 | 0x36 .. i32.store
compile | | .......... (offset = 64)
emit | 0x55f3cc932c80: i32.store
compile | 85 | 0x41 .. i32.const
stack | ic26
compile | | .......... (const i32 = 5150)
compile | 86 | 0x20 .. local.get
stack | ic26 iL0
compile | 87 | 0x41 .. i32.const
stack | ic26 iL0 ic27
compile | | .......... (const i32 = 64)
compile | 88 | 0x6a .. i32.add
emit | 0x55f3cc932ca0: i32.add
stack | (r0) ic26 ir0
compile | 89 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932cb8: SetSlot
emit | 0x55f3cc932cc8: CopySlot_32
stack | i62
emit | 0x55f3cc932ce0: call
compile | 90 | 0x1a .. drop
stack |
compile | 91 | 0x20 .. local.get
stack | iL0
compile | 92 | 0x41 .. i32.const
stack | iL0 ic28
compile | | .......... (const i32 = 232)
compile | 93 | 0x6a .. i32.add
emit | 0x55f3cc932cf8: i32.add
stack | (r0) ir0
compile | 94 | 0x42 .. i64.const
stack | (r0) ir0 Ic30
compile | | .......... (const i64 = 0)
compile | 95 | 0x37 .. i64.store
compile | | .......... (offset = 0)
emit | 0x55f3cc932d10: i64.store
compile | 96 | 0x20 .. local.get
stack | iL0
compile | 97 | 0x41 .. i32.const
stack | iL0 ic29
compile | | .......... (const i32 = 224)
compile | 98 | 0x6a .. i32.add
emit | 0x55f3cc932d28: i32.add
stack | (r0) ir0
compile | 99 | 0x42 .. i64.const
stack | (r0) ir0 Ic30
compile | | .......... (const i64 = 0)
compile | 100 | 0x37 .. i64.store
compile | | .......... (offset = 0)
emit | 0x55f3cc932d40: i64.store
compile | 101 | 0x20 .. local.get
stack | iL0
compile | 102 | 0x41 .. i32.const
stack | iL0 ic32
compile | | .......... (const i32 = 123123)
compile | 103 | 0x36 .. i32.store
compile | | .......... (offset = 48)
emit | 0x55f3cc932d58: i32.store
compile | 104 | 0x20 .. local.get
stack | iL0
compile | 105 | 0x42 .. i64.const
stack | iL0 Ic30
compile | | .......... (const i64 = 0)
compile | 106 | 0x37 .. i64.store
compile | | .......... (offset = 216)
emit | 0x55f3cc932d78: i64.store
compile | 107 | 0x20 .. local.get
stack | iL0
compile | 108 | 0x42 .. i64.const
stack | iL0 Ic30
compile | | .......... (const i64 = 0)
compile | 109 | 0x37 .. i64.store
compile | | .......... (offset = 208)
emit | 0x55f3cc932d98: i64.store
compile | 110 | 0x20 .. local.get
stack | iL0
compile | 111 | 0x41 .. i32.const
stack | iL0 ic33
compile | | .......... (const i32 = 208)
compile | 112 | 0x6a .. i32.add
emit | 0x55f3cc932db8: i32.add
stack | (r0) ir0
compile | 113 | 0x41 .. i32.const
stack | (r0) ir0 ic34
compile | | .......... (const i32 = 32)
compile | 114 | 0x41 .. i32.const
stack | (r0) ir0 ic34 ic35
compile | | .......... (const i32 = 5182)
compile | 115 | 0x20 .. local.get
stack | (r0) ir0 ic34 ic35 iL0
compile | 116 | 0x41 .. i32.const
stack | (r0) ir0 ic34 ic35 iL0 ic36
compile | | .......... (const i32 = 48)
compile | 117 | 0x6a .. i32.add
emit | 0x55f3cc932dd0: SetSlot
emit | 0x55f3cc932de0: i32.add
stack | (r0) i61 ic34 ic35 ir0
compile | 118 | 0x10 .. call
compile | | .......... (func= 'snprintf'; args= 4)
emit | 0x55f3cc932df8: SetSlot
emit | 0x55f3cc932e08: CopySlot_32
emit | 0x55f3cc932e20: CopySlot_32
emit | 0x55f3cc932e38: CopySlot_32
stack | i62
emit | 0x55f3cc932e50: call
compile | 119 | 0x1a .. drop
stack |
compile | 120 | 0x20 .. local.get
stack | iL0
compile | 121 | 0x42 .. i64.const
stack | iL0 Ic22
compile | | .......... (const i64 = 188896956689357)
compile | 122 | 0x37 .. i64.store
compile | | .......... (offset = 28)
emit | 0x55f3cc932e68: i64.store
compile | 123 | 0x20 .. local.get
stack | iL0
compile | 124 | 0x42 .. i64.const
stack | iL0 Ic24
compile | | .......... (const i64 = 532575944581)
compile | 125 | 0x37 .. i64.store
compile | | .......... (offset = 20)
emit | 0x55f3cc932e88: i64.store
compile | 126 | 0x20 .. local.get
stack | iL0
compile | 127 | 0x41 .. i32.const
stack | iL0 ic21
compile | | .......... (const i32 = 5177)
compile | 128 | 0x36 .. i32.store
compile | | .......... (offset = 16)
emit | 0x55f3cc932ea8: i32.store
compile | 129 | 0x41 .. i32.const
stack | ic37
compile | | .......... (const i32 = 5203)
compile | 130 | 0x20 .. local.get
stack | ic37 iL0
compile | 131 | 0x41 .. i32.const
stack | ic37 iL0 ic38
compile | | .......... (const i32 = 16)
compile | 132 | 0x6a .. i32.add
emit | 0x55f3cc932ec8: i32.add
stack | (r0) ic37 ir0
compile | 133 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932ee0: SetSlot
emit | 0x55f3cc932ef0: CopySlot_32
stack | i62
emit | 0x55f3cc932f08: call
compile | 134 | 0x1a .. drop
stack |
compile | 135 | 0x20 .. local.get
stack | iL0
compile | 136 | 0x20 .. local.get
stack | iL0 iL0
compile | 137 | 0x41 .. i32.const
stack | iL0 iL0 ic33
compile | | .......... (const i32 = 208)
compile | 138 | 0x6a .. i32.add
emit | 0x55f3cc932f20: i32.add
stack | (r0) iL0 ir0
compile | 139 | 0x36 .. i32.store
compile | | .......... (offset = 0)
emit | 0x55f3cc932f38: i32.store
compile | 140 | 0x41 .. i32.const
stack | ic39
compile | | .......... (const i32 = 5230)
compile | 141 | 0x20 .. local.get
stack | ic39 iL0
compile | 142 | 0x10 .. call
compile | | .......... (func= 'printf'; args= 2)
emit | 0x55f3cc932f50: CopySlot_32
emit | 0x55f3cc932f68: CopySlot_32
stack | i62
emit | 0x55f3cc932f80: call
compile | 143 | 0x1a .. drop
stack |
compile | 144 | 0x20 .. local.get
stack | iL0
compile | 145 | 0x41 .. i32.const
stack | iL0 ic1
compile | | .......... (const i32 = 240)
compile | 146 | 0x6a .. i32.add
emit | 0x55f3cc932f98: i32.add
stack | (r0) ir0
compile | 147 | 0x24 .. global.set
emit | 0x55f3cc932fb0: SetGlobal
compile | 148 | 0x0b end
emit | 0x55f3cc932fc0: return
compile | unique constant slots: 39; unused slots: 21
emit | release page: 1 to queue: 'open'
runtime | runtime: 0x55f3cc90e380; open-pages: 1; full-pages: 0; active: 0; total: 1
code | code page seq: 1
code | ---------------------------------------------------------------------------------------
code | 0x55f3cc9327c8 | 0x55f3cc684216
code | 0x55f3cc9327d0 | 0x55f3cc680200
code | 0x55f3cc9327d8 | 0x55f3cc9216d0
code | 0x55f3cc9327e0 | (nil)
code | 0x55f3cc9327e8 | 0x55f3cc684216
code | 0x55f3cc9327f0 | 0x55f3cc67fd2d
code | 0x55f3cc9327f8 | 0x55f3cc921748
code | 0x55f3cc932800 | (nil)
code | 0x55f3cc932808 | Entry
code | 0x55f3cc932810 | 0x55f3cc9217c0
code | 0x55f3cc932818 | GetGlobal_s32
code | 0x55f3cc932820 | 0x55f3cc921850
code | 0x55f3cc932828 | 0x3d
code | 0x55f3cc932830 | i32.sub
code | 0x55f3cc932838 | 0x1
code | 0x55f3cc932840 | 0x3d
code | 0x55f3cc932848 | SetSlot
code | 0x55f3cc932850 | (nil)
code | 0x55f3cc932858 | SetGlobal
code | 0x55f3cc932860 | 0x55f3cc921850
code | 0x55f3cc932868 | CopySlot_32
code | 0x55f3cc932870 | 0x40
code | 0x55f3cc932878 | 0x3
code | 0x55f3cc932880 | CopySlot_32
code | 0x55f3cc932888 | 0x3e
code | 0x55f3cc932890 | 0x2
code | 0x55f3cc932898 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc9328b0 | i32.store
code | 0x55f3cc9328b8 | 0x4
code | 0x55f3cc9328c0 | (nil)
code | 0x55f3cc9328c8 | 0xc0
code | 0x55f3cc9328d0 | i32.add
code | 0x55f3cc9328d8 | 0x6
code | 0x55f3cc9328e0 | (nil)
code | 0x55f3cc9328e8 | SetSlot
code | 0x55f3cc9328f0 | 0x40
code | 0x55f3cc9328f8 | CopySlot_32
code | 0x55f3cc932900 | 0x3e
code | 0x55f3cc932908 | 0x5
code | 0x55f3cc932910 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932928 | i32.store
code | 0x55f3cc932930 | 0x7
code | 0x55f3cc932938 | (nil)
code | 0x55f3cc932940 | 0xb0
code | 0x55f3cc932948 | i32.add
code | 0x55f3cc932950 | 0x8
code | 0x55f3cc932958 | (nil)
code | 0x55f3cc932960 | SetSlot
code | 0x55f3cc932968 | 0x40
code | 0x55f3cc932970 | CopySlot_32
code | 0x55f3cc932978 | 0x3e
code | 0x55f3cc932980 | 0x5
code | 0x55f3cc932988 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc9329a0 | i32.store
code | 0x55f3cc9329a8 | 0x9
code | 0x55f3cc9329b0 | (nil)
code | 0x55f3cc9329b8 | 0xa0
code | 0x55f3cc9329c0 | i32.add
code | 0x55f3cc9329c8 | 0xa
code | 0x55f3cc9329d0 | (nil)
code | 0x55f3cc9329d8 | SetSlot
code | 0x55f3cc9329e0 | 0x40
code | 0x55f3cc9329e8 | CopySlot_32
code | 0x55f3cc9329f0 | 0x3e
code | 0x55f3cc9329f8 | 0x5
code | 0x55f3cc932a00 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932a18 | i32.store
code | 0x55f3cc932a20 | 0xb
code | 0x55f3cc932a28 | (nil)
code | 0x55f3cc932a30 | 0x90
code | 0x55f3cc932a38 | i32.add
code | 0x55f3cc932a40 | 0xc
code | 0x55f3cc932a48 | (nil)
code | 0x55f3cc932a50 | SetSlot
code | 0x55f3cc932a58 | 0x40
code | 0x55f3cc932a60 | CopySlot_32
code | 0x55f3cc932a68 | 0x3e
code | 0x55f3cc932a70 | 0x5
code | 0x55f3cc932a78 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932a90 | i32.store
code | 0x55f3cc932a98 | 0xd
code | 0x55f3cc932aa0 | (nil)
code | 0x55f3cc932aa8 | 0x80
code | 0x55f3cc932ab0 | i32.add
code | 0x55f3cc932ab8 | 0xe
code | 0x55f3cc932ac0 | (nil)
code | 0x55f3cc932ac8 | SetSlot
code | 0x55f3cc932ad0 | 0x40
code | 0x55f3cc932ad8 | CopySlot_32
code | 0x55f3cc932ae0 | 0x3e
code | 0x55f3cc932ae8 | 0x5
code | 0x55f3cc932af0 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932b08 | CopySlot_32
code | 0x55f3cc932b10 | 0x40
code | 0x55f3cc932b18 | 0x3
code | 0x55f3cc932b20 | CopySlot_32
code | 0x55f3cc932b28 | 0x3e
code | 0x55f3cc932b30 | 0xf
code | 0x55f3cc932b38 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932b50 | i32.store
code | 0x55f3cc932b58 | 0x10
code | 0x55f3cc932b60 | (nil)
code | 0x55f3cc932b68 | 0x70
code | 0x55f3cc932b70 | i32.add
code | 0x55f3cc932b78 | 0x4
code | 0x55f3cc932b80 | (nil)
code | 0x55f3cc932b88 | SetSlot
code | 0x55f3cc932b90 | 0x40
code | 0x55f3cc932b98 | CopySlot_32
code | 0x55f3cc932ba0 | 0x3e
code | 0x55f3cc932ba8 | 0x11
code | 0x55f3cc932bb0 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932bc8 | i32.store
code | 0x55f3cc932bd0 | 0x12
code | 0x55f3cc932bd8 | (nil)
code | 0x55f3cc932be0 | 0x60
code | 0x55f3cc932be8 | i32.add
code | 0x55f3cc932bf0 | 0x14
code | 0x55f3cc932bf8 | (nil)
code | 0x55f3cc932c00 | SetSlot
code | 0x55f3cc932c08 | 0x40
code | 0x55f3cc932c10 | CopySlot_32
code | 0x55f3cc932c18 | 0x3e
code | 0x55f3cc932c20 | 0x13
code | 0x55f3cc932c28 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932c40 | i64.store
code | 0x55f3cc932c48 | 0x16
code | 0x55f3cc932c50 | (nil)
code | 0x55f3cc932c58 | 0x4c
code | 0x55f3cc932c60 | i64.store
code | 0x55f3cc932c68 | 0x18
code | 0x55f3cc932c70 | (nil)
code | 0x55f3cc932c78 | 0x44
code | 0x55f3cc932c80 | i32.store
code | 0x55f3cc932c88 | 0x15
code | 0x55f3cc932c90 | (nil)
code | 0x55f3cc932c98 | 0x40
code | 0x55f3cc932ca0 | i32.add
code | 0x55f3cc932ca8 | 0x1b
code | 0x55f3cc932cb0 | (nil)
code | 0x55f3cc932cb8 | SetSlot
code | 0x55f3cc932cc0 | 0x40
code | 0x55f3cc932cc8 | CopySlot_32
code | 0x55f3cc932cd0 | 0x3e
code | 0x55f3cc932cd8 | 0x1a
code | 0x55f3cc932ce0 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932cf8 | i32.add
code | 0x55f3cc932d00 | 0x1c
code | 0x55f3cc932d08 | (nil)
code | 0x55f3cc932d10 | i64.store
code | 0x55f3cc932d18 | 0x1e
code | 0x55f3cc932d20 | (nil)
code | 0x55f3cc932d28 | i32.add
code | 0x55f3cc932d30 | 0x1d
code | 0x55f3cc932d38 | (nil)
code | 0x55f3cc932d40 | i64.store
code | 0x55f3cc932d48 | 0x1e
code | 0x55f3cc932d50 | (nil)
code | 0x55f3cc932d58 | i32.store
code | 0x55f3cc932d60 | 0x20
code | 0x55f3cc932d68 | (nil)
code | 0x55f3cc932d70 | 0x30
code | 0x55f3cc932d78 | i64.store
code | 0x55f3cc932d80 | 0x1e
code | 0x55f3cc932d88 | (nil)
code | 0x55f3cc932d90 | 0xd8
code | 0x55f3cc932d98 | i64.store
code | 0x55f3cc932da0 | 0x1e
code | 0x55f3cc932da8 | (nil)
code | 0x55f3cc932db0 | 0xd0
code | 0x55f3cc932db8 | i32.add
code | 0x55f3cc932dc0 | 0x21
code | 0x55f3cc932dc8 | (nil)
code | 0x55f3cc932dd0 | SetSlot
code | 0x55f3cc932dd8 | 0x3d
code | 0x55f3cc932de0 | i32.add
code | 0x55f3cc932de8 | 0x24
code | 0x55f3cc932df0 | (nil)
code | 0x55f3cc932df8 | SetSlot
code | 0x55f3cc932e00 | 0x44
code | 0x55f3cc932e08 | CopySlot_32
code | 0x55f3cc932e10 | 0x42
code | 0x55f3cc932e18 | 0x23
code | 0x55f3cc932e20 | CopySlot_32
code | 0x55f3cc932e28 | 0x40
code | 0x55f3cc932e30 | 0x22
code | 0x55f3cc932e38 | CopySlot_32
code | 0x55f3cc932e40 | 0x3e
code | 0x55f3cc932e48 | 0x3d
code | 0x55f3cc932e50 | call 0x55f3cc9327e8; stack-offset: 62
code | 0x55f3cc932e68 | i64.store
code | 0x55f3cc932e70 | 0x16
code | 0x55f3cc932e78 | (nil)
code | 0x55f3cc932e80 | 0x1c
code | 0x55f3cc932e88 | i64.store
code | 0x55f3cc932e90 | 0x18
code | 0x55f3cc932e98 | (nil)
code | 0x55f3cc932ea0 | 0x14
code | 0x55f3cc932ea8 | i32.store
code | 0x55f3cc932eb0 | 0x15
code | 0x55f3cc932eb8 | (nil)
code | 0x55f3cc932ec0 | 0x10
code | 0x55f3cc932ec8 | i32.add
code | 0x55f3cc932ed0 | 0x26
code | 0x55f3cc932ed8 | (nil)
code | 0x55f3cc932ee0 | SetSlot
code | 0x55f3cc932ee8 | 0x40
code | 0x55f3cc932ef0 | CopySlot_32
code | 0x55f3cc932ef8 | 0x3e
code | 0x55f3cc932f00 | 0x25
code | 0x55f3cc932f08 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932f20 | i32.add
code | 0x55f3cc932f28 | 0x21
code | 0x55f3cc932f30 | (nil)
code | 0x55f3cc932f38 | i32.store
code | 0x55f3cc932f40 | (nil)
code | 0x55f3cc932f48 | (nil)
code | 0x55f3cc932f50 | CopySlot_32
code | 0x55f3cc932f58 | 0x40
code | 0x55f3cc932f60 | (nil)
code | 0x55f3cc932f68 | CopySlot_32
code | 0x55f3cc932f70 | 0x3e
code | 0x55f3cc932f78 | 0x27
code | 0x55f3cc932f80 | call 0x55f3cc9327c8; stack-offset: 62
code | 0x55f3cc932f98 | i32.add
code | 0x55f3cc932fa0 | 0x1
code | 0x55f3cc932fa8 | (nil)
code | 0x55f3cc932fb0 | SetGlobal
code | 0x55f3cc932fb8 | 0x55f3cc921850
code | 0x55f3cc932fc0 | return
code | ---------------------------------------------------------------------------------------
code | free-lines: 253
chr: p,r,i,n,t,
int: 1234
hex: abcd
Message 1: test -123 123 abcd ABCD
Message 2: test -123 123 abcd ABCD
Native stack used: 7552
Print snprintf result: sprintf() Result: 1e0f3 module | freeing module: .unnamed (funcs: 3; segments: 1)
runtime | freeing 1 pages from environment
code | free page: 1; 0x55f3cc9327b0; util: 0.0%
Again, here's what the code be like in WASM binary:
```c
#include <stdint.h>
#define WASM_EXPORT __attribute__((used)) __attribute__((visibility ("default")))
#define WASM_EXPORT_AS(NAME) WASM_EXPORT __attribute__((export_name(NAME)))
#define WASM_IMPORT(MODULE,NAME) __attribute__((import_module(MODULE))) __attribute__((import_name(NAME)))
WASM_IMPORT("env","printf")
int printf(const char* fmt, ...);
WASM_IMPORT("env", "snprintf")
int snprintf(char* out_buf, int buf_len, const char *fmt, ...);
WASM_EXPORT_AS("_start")
void run() {
const char* buff = "print";
printf("chr: ");
for (int i=0; i<5; i++) {
printf("%c,", buff[i]);
}
printf("\n");
printf("int: %d\n", 1234);
printf("hex: %x\n", 0xABCD);
printf("Message 1: %s %d %u %x %X\n", "test", -123, 123, 0xabcd, 0xABCD);
char buf[32] = { 0 };
snprintf(buf, sizeof(buf), "sprintf() Result: %x", 123123);
printf("Message 2: %s %d %u %x %X\n", "test", -123, 123, 0xabcd, 0xABCD);
printf("Print snprintf result: %s", buf);
}
</pre>
</details>
Hello again @vshymanskyy , one of your recent commits (https://github.com/wasm3/wasm3/commit/52f80e9e635b4d8ce441983352a9a4dcb535e144) reminds me that some of the GCC optimisation flags may cause some troubles. So I had a try and eventually, I realised by removing the -fno-stack-protector, this problem will be solved!
@huming2207 should I merge this?
So far I think this PR works fine with GCC stack protector on. I think something is wrong with the runtime's stack management. I have no idea for now about this. Could you please also investigate this issue if possible? Thanks!
@huming2207 please rebase to the latest version and re-check (with different GCC stack protector settings, if you can). We have fixed some bugs in the interpreter.
@huming2207 please rebase to the latest version and re-check (with different GCC stack protector settings, if you can). We have fixed some bugs in the interpreter.
Here's a quick test on my desktop with Ubuntu 20.04.1 x64. Looks like I still need to get the -fno-stack-protector removed:
Otherwise it will output something like this:
Here's another test on my M1 Mac with Clang 11.1, macOS 11.2.3, compiled with cmake . -DCMAKE_BUILD_TYPE=Release -DBUILD_NATIVE=OFF (because Clang on Apple Silicon does not support -march=native) and the -fno-stack-protector was kept:
Interestingly, even if I remove the -fno-stack-protector it still prints garbage:
I've also tried a few more combinations like adding -fstack-protector-all or -fstack-protector-strong or removing the -fno-stack-check etc., no luck at all.
@vshymanskyy also I remembered earlier when I was playing with this on ESP32, the third parameter (the format string) can also be corrupted, so does printf() you implemented earlier. So I guess it may not be a va_list internal issue but more likely to be a stack handling issue. But I can't tell for now...I'm still too naive for the WASM world...
@vshymanskyy I think I still can't solve this issue, even with your latest commit (till 307265ae5e236ab0dd0f42bd1cee0acde71222e8). Since I'm also busy working on my exams and some work-related stuff, I don't have enough time to take another deeper look. I will close it for now until I have some times later.
Please take your time. I think we have better tools to investigate this issue!