translate_emulated has gotten _much_ slower
I spent some time timing this command:
cd ./linux/bootstrap; ./clean; popd; time ./translate_emulated apps/ex2.mu
Times at a few commits this year, along with notes on what changed in the
linux/ directory:
517a01c95a62a8d6227357d514dc9fff83388153 Feb 17 1:30
time ./translate_mu_baremetal_emulated baremetal/ex2.mu
71e4f3812982dba2efb471283d310224e8db363e Mar 3 1:30
time ./translate_emulated ex2.mu
2df1d1a73046a0a7b6523552b53f407651ed36df May 14 1:53
time ./translate_emulated apps/ex2.mu
ff8ec9bcff7577ba923fe7868ea62ecceed55ee7 + patch May 14 2:10 -- start showing stack trace on abort
9831a8cef9cb8f412590ffa6ab9f52b8b51ab9d2 + patch May 19 2:23
8c47da082b63b6aa6aafd45e1f8f7edd4459e555 Jun 18 2:27
-- what changed in the middle here?!
b625c6304eca827c04eda719fa6f7927294b80bc Jul 29 3:13
-- seemingly minor change to linux/next-word
52e3ea8a4bec791e4c2d64fb8aca9e26cdf60f25 Aug 15 4:55
ba4a3c5be70d473479e663be0400b798f88c113d Aug 22 4:57
-- one additional compiler check in linux/mu.subx
899cdcc3f3da2be04801ab79b53ec2264e8b1e4c Aug 29 5:44 5:54
975f372d67a5242d3c046712d43ec9f61a920009 Oct 31 5:22
So it's not a single commit :/ Unclear what's going on.
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#
# To run:
# $ ./bootstrap translate init.linux apps/ex13.subx -o apps/ex13
# $ ./bootstrap run apps/ex13
# Expected result:
# $ echo $?
# 1
== code
# 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:
b8/copy-to-eax 3/imm32
3d/compare-eax-and 3/imm32
0f 94/set-if-= 3/mod/direct 3/rm32/ebx . . . . . . # set ebx to ZF
81 4/subop/and 3/mod/direct 3/rm32/ebx . . . . . 0xff/imm32 # AND with eax
$exit:
# exit(ebx)
e8/call syscall_exit/disp32
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