diff options
Diffstat (limited to 'apps/random.subx')
| -rw-r--r-- | apps/random.subx | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/apps/random.subx b/apps/random.subx deleted file mode 100644 index 71012309..00000000 --- a/apps/random.subx +++ /dev/null @@ -1,59 +0,0 @@ -# Repeatedly read 32-bit numbers from /dev/random, print them to stdout. -# -# To run: -# $ ./bootstrap translate init.linux [01]*.subx apps/random.subx -o apps/random -# $ ./bootstrap run apps/random - -== code 0x09000000 -# instruction effective address register displacement immediate -# . op subop mod rm32 base index scale r32 -# . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes - -Entry: - # stream/esi = syscall(open, "/dev/null", O_RDONLY, 0) # we can't use 'fd' because it looks like a hex byte - bb/copy-to-ebx Filename/imm32 - b9/copy-to-ecx 0/imm32/rdonly - ba/copy-to-edx 0x180/imm32/fixed-perms - e8/call syscall_open/disp32 - # . stream = eax - 89/copy 3/mod/direct 6/rm32/esi . . . 0/r32/eax . . # copy eax to esi - -$loop: - - # syscall(read, Stream, N, 4) - 89/copy 3/mod/direct 3/rm32/ebx . . . 6/r32/esi . . # copy esi to ebx - b9/copy-to-ecx N/imm32 - ba/copy-to-edx 4/imm32/size - e8/call syscall_read/disp32 - - # write-int32-hex-buffered(Stdout, *N) - # . . push args - ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . N/disp32 # push *N - 68/push Stdout/imm32 - # . . call - e8/call write-int32-hex-buffered/disp32 - - # write-buffered(Stdout, Newline) - # . . push args - 68/push Newline/imm32 - 68/push Stdout/imm32 - # . . call - e8/call write-buffered/disp32 - # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp - - eb/jump $loop/disp8 - - # syscall(exit, 0) - bb/copy-to-ebx 0/imm32 - e8/call syscall_exit/disp32 - -== data 0x0a000000 - -N: - 0/imm32 -Filename: - 2f 64 65 76 2f 72 61 6e 64 6f 6d 00 -# / d e v / r a n d o m null - -# . . vim:nowrap:textwidth=0 |