From 2f04067171022a65c020e27b35404abe10afabf3 Mon Sep 17 00:00:00 2001
From: Per <Per Lindgren>
Date: Tue, 15 Oct 2019 01:13:24 +0200
Subject: [PATCH] WIP SyncSim
---
.cargo/config | 11 +++-
Cargo.toml | 3 +-
link.ld | 4 ++
mips_program.objdump | 134 +++++++++++++++++++++++++++++++++++++++
mipseb-unknown-none.json | 16 +++++
src/lib.rs | 2 +-
6 files changed, 166 insertions(+), 4 deletions(-)
create mode 100644 mips_program.objdump
create mode 100644 mipseb-unknown-none.json
diff --git a/.cargo/config b/.cargo/config
index 8920f68..8bc5737 100644
--- a/.cargo/config
+++ b/.cargo/config
@@ -4,8 +4,15 @@
# "-C", "link-arg=-nostartfiles",
"-C", "relocation-model=static",
"-C", "inline-threshold=275",
- "-C", "lto"
+ ]
+
+[target.mipseb-unknown-none]
+ rustflags = [
+ "-C", "link-arg=-Tlink.ld",
+ # "-C", "link-arg=-nostartfiles",
+ "-C", "relocation-model=static",
+ "-C", "inline-threshold=275",
]
[build]
-target = "mipsel-unknown-none"
\ No newline at end of file
+target = "mipseb-unknown-none"
\ No newline at end of file
diff --git a/Cargo.toml b/Cargo.toml
index 4d91a45..4b417fe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,8 @@ edition = "2018"
[profile.release]
#opt-level = 'z' # Optimize for size.
opt-level = 3 # Aggressive optimization
-debug = true # keep debug symbols
+#debug = true # keep debug symbols
+debug = false # skip debug symbols
lto = true # Enable Link Time Optimization
codegen-units = 1 # Reduce number of codegen units to increase optimizations.
panic = 'abort' # Abort on panic
diff --git a/link.ld b/link.ld
index 45d9809..bf0cfa3 100644
--- a/link.ld
+++ b/link.ld
@@ -1,3 +1,6 @@
+OUTPUT_FORMAT("elf32-tradbigmips")
+OUTPUT_ARCH(mips)
+
START_ADDR = 0x00000000;
MEMORY_SIZE = 0x80000000;
ASSERT(DEFINED(_start), "Cannot find entry point: fn _start() -> !");
@@ -20,6 +23,7 @@ SECTIONS
_gp = ALIGN(16);
+ . = 0x00001000;
.data :
{
__sdata = .;
diff --git a/mips_program.objdump b/mips_program.objdump
new file mode 100644
index 0000000..7e622a9
--- /dev/null
+++ b/mips_program.objdump
@@ -0,0 +1,134 @@
+
+a.out: file format elf32-tradbigmips
+
+Sections:
+Idx Name Size VMA LMA File off Algn
+ 0 .text 0000003c 00000000 00000000 00000060 2**2
+ CONTENTS, ALLOC, LOAD, READONLY, CODE
+ 1 .data 00000040 00001000 00001000 00001060 2**4
+ CONTENTS, ALLOC, LOAD, DATA
+ 2 .bss 00000000 00001040 00001040 000010a0 2**0
+ ALLOC
+ 3 .reginfo 00000018 00000000 00000000 000010a0 2**2
+ CONTENTS, READONLY, LINK_ONCE_SAME_SIZE
+ 4 .pdr 00000000 00000000 00000000 000010b8 2**2
+ CONTENTS, READONLY
+SYMBOL TABLE:
+00000000 l d .text 00000000 .text
+00001000 l d .data 00000000 .data
+00001040 l d .bss 00000000 .bss
+00000000 l d .reginfo 00000000 .reginfo
+00000000 l d .pdr 00000000 .pdr
+00000000 l d *ABS* 00000000 .shstrtab
+00000000 l d *ABS* 00000000 .symtab
+00000000 l d *ABS* 00000000 .strtab
+00000000 l .text 00000000 main
+00001000 l .data 00000000 intext
+00001010 l .data 00000000 outtext
+00000014 l .text 00000000 seek_end
+00000028 l .text 00000000 seek_end1
+00000038 l .text 00000000 copy
+00000038 l .text 00000000 stop
+00000000 g *ABS* 00000000 __start
+
+
+Contents of section .text:
+ 0000 3c090000 25291000 3c0a0000 254a1010 <...%)..<...%J..
+ 0010 24080000 812b0000 11600003 25080001 $....+...`..%...
+ 0020 25290001 1000fffb 01485021 a14b0000 %).......HP!.K..
+ 0030 3c090000 25291000 1000ffff <...%)......
+Contents of section .data:
+ 1000 21646c72 6f57206f 6c6c6548 00000000 !dlroW olleH....
+ 1010 78787878 78787878 78787878 78787878 xxxxxxxxxxxxxxxx
+ 1020 78787878 78787878 78787878 78787878 xxxxxxxxxxxxxxxx
+ 1030 00000000 00000000 00000000 00000000 ................
+Contents of section .reginfo:
+ 0000 10000f00 00000000 00000000 00000000 ................
+ 0010 00000000 00000000 ........
+Disassembly of section .text:
+
+00000000 <_start>:
+ 0: 27bdfff0 addiu sp,sp,-16
+ 4: 3c010000 lui at,0x0
+ 8: 24221000 addiu v0,at,4096
+ c: 3c010000 lui at,0x0
+ 10: 24231000 addiu v1,at,4096
+ 14: 0062082b sltu at,v1,v0
+ 18: 10200006 beqz at,34 <START_ADDR+0x34>
+ 1c: 00000000 nop
+ 20: ac600000 sw zero,0(v1)
+ 24: 24630004 addiu v1,v1,4
+ 28: 0062082b sltu at,v1,v0
+ 2c: 1420fffc bnez at,20 <START_ADDR+0x20>
+ 30: 00000000 nop
+ 34: 3c010000 lui at,0x0
+ 38: 24221000 addiu v0,at,4096
+ 3c: 3c010000 lui at,0x0
+ 40: 24231000 addiu v1,at,4096
+ 44: 0062082b sltu at,v1,v0
+ 48: 10200009 beqz at,70 <START_ADDR+0x70>
+ 4c: 00000000 nop
+ 50: 3c010000 lui at,0x0
+ 54: 24241000 addiu a0,at,4096
+ 58: 8c810000 lw at,0(a0)
+ 5c: ac610000 sw at,0(v1)
+ 60: 24630004 addiu v1,v1,4
+ 64: 0062082b sltu at,v1,v0
+ 68: 1420fffb bnez at,58 <START_ADDR+0x58>
+ 6c: 24840004 addiu a0,a0,4
+ 70: 0c000037 jal dc <main>
+ 74: 00000000 nop
+ 78: 0000000d break
+
+0000007c <_ZN7reverse3rev17h10307c82767293bfE>:
+ 7c: 10a00015 beqz a1,d4 <_ZN7reverse3rev17h10307c82767293bfE+0x58>
+ 80: 00000000 nop
+ 84: 27bdfff0 addiu sp,sp,-16
+ 88: afbf000c sw ra,12(sp)
+ 8c: afb20008 sw s2,8(sp)
+ 90: afb10004 sw s1,4(sp)
+ 94: afb00000 sw s0,0(sp)
+ 98: 24b2ffff addiu s2,a1,-1
+ 9c: 00808825 move s1,a0
+ a0: 24840001 addiu a0,a0,1
+ a4: 00c08025 move s0,a2
+ a8: 02402825 move a1,s2
+ ac: 0c00001f jal 7c <_ZN7reverse3rev17h10307c82767293bfE>
+ b0: 02403825 move a3,s2
+ b4: 02120821 addu at,s0,s2
+ b8: 92220000 lbu v0,0(s1)
+ bc: 8fb00000 lw s0,0(sp)
+ c0: 8fb10004 lw s1,4(sp)
+ c4: 8fb20008 lw s2,8(sp)
+ c8: 8fbf000c lw ra,12(sp)
+ cc: a0220000 sb v0,0(at)
+ d0: 27bd0010 addiu sp,sp,16
+ d4: 03e00008 jr ra
+ d8: 00000000 nop
+
+000000dc <main>:
+ dc: 27bdfff0 addiu sp,sp,-16
+ e0: afbf000c sw ra,12(sp)
+ e4: 3c010000 lui at,0x0
+ e8: 27a60000 addiu a2,sp,0
+ ec: 2405000b li a1,11
+ f0: 2407000b li a3,11
+ f4: aba00007 swl zero,7(sp)
+ f8: bba0000a swr zero,10(sp)
+ fc: afa00004 sw zero,4(sp)
+ 100: afa00000 sw zero,0(sp)
+ 104: 0c00001f jal 7c <_ZN7reverse3rev17h10307c82767293bfE>
+ 108: 24240170 addiu a0,at,368
+ 10c: 93a1000a lbu at,10(sp)
+ 110: 93a10009 lbu at,9(sp)
+ 114: 93a10008 lbu at,8(sp)
+ 118: 93a10007 lbu at,7(sp)
+ 11c: 93a10006 lbu at,6(sp)
+ 120: 93a10005 lbu at,5(sp)
+ 124: 93a10004 lbu at,4(sp)
+ 128: 93a10003 lbu at,3(sp)
+ 12c: 93a10002 lbu at,2(sp)
+ 130: 93a10001 lbu at,1(sp)
+ 134: 93a10000 lbu at,0(sp)
+ 138: 0800004e j 138 <main+0x5c>
+ 13c: 00000000 nop
diff --git a/mipseb-unknown-none.json b/mipseb-unknown-none.json
new file mode 100644
index 0000000..5013d0d
--- /dev/null
+++ b/mipseb-unknown-none.json
@@ -0,0 +1,16 @@
+{
+ "llvm-target": "mipseb-unknown-none",
+ "arch": "mips",
+ "cpu": "mips32r3",
+ "data-layout": "E-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64",
+ "executables": true,
+ "features": "+mips32r3,+soft-float",
+ "linker-flavor": "ld.lld",
+ "linker": "rust-lld",
+ "panic-strategy": "abort",
+ "max-atomic-width": 32,
+ "os": "none",
+ "target-c-int-width": "32",
+ "target-endian": "big",
+ "target-pointer-width": "32"
+}
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index 48792c9..867c78b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -96,7 +96,7 @@ pub extern "C" fn _start() -> ! {
unsafe {
zero_bss(&mut __sbss, &mut __ebss);
init_data(&mut __sdata, &mut __edata, &__sidata);
- unsafe { main() }
+ main()
}
}
--
GitLab