diff options
| author | Klaatu <[email protected]> | 2015-05-17 15:33:21 +1200 |
|---|---|---|
| committer | Klaatu <[email protected]> | 2015-05-17 15:33:21 +1200 |
| commit | b0de699679e8f1e39af847ed172d1ba605b4370c (patch) | |
| tree | 01dac00471d61f727394e508c613b29cff0ceae5 /system/x86_64 | |
bulk upload of source
Diffstat (limited to 'system/x86_64')
| -rw-r--r-- | system/x86_64/Flags | 1 | ||||
| -rw-r--r-- | system/x86_64/Makefile | 5 | ||||
| -rw-r--r-- | system/x86_64/__restore_rt.S | 8 | ||||
| -rw-r--r-- | system/x86_64/gettimeofday.S | 18 | ||||
| -rw-r--r-- | system/x86_64/start.S | 17 | ||||
| -rw-r--r-- | system/x86_64/syscalls.h | 20 | ||||
| -rw-r--r-- | system/x86_64/unified.S | 27 | ||||
| -rw-r--r-- | system/x86_64/waitpid.S | 10 |
8 files changed, 106 insertions, 0 deletions
diff --git a/system/x86_64/Flags b/system/x86_64/Flags new file mode 100644 index 0000000..af36a53 --- /dev/null +++ b/system/x86_64/Flags @@ -0,0 +1 @@ +OPTIMIZATION = diff --git a/system/x86_64/Makefile b/system/x86_64/Makefile new file mode 100644 index 0000000..6b11a00 --- /dev/null +++ b/system/x86_64/Makefile @@ -0,0 +1,5 @@ +include Flags +include ../Files + +system.a: unified.o $(ALL) __restore_rt.o + ar cr $@ $^ diff --git a/system/x86_64/__restore_rt.S b/system/x86_64/__restore_rt.S new file mode 100644 index 0000000..34a5d3f --- /dev/null +++ b/system/x86_64/__restore_rt.S @@ -0,0 +1,8 @@ +.text +.align 16 +.global __restore_rt +.type __restore_rt,@function +__restore_rt: + movq $15, %rax + syscall + hlt diff --git a/system/x86_64/gettimeofday.S b/system/x86_64/gettimeofday.S new file mode 100644 index 0000000..8c2f83b --- /dev/null +++ b/system/x86_64/gettimeofday.S @@ -0,0 +1,18 @@ +.text +.global gettimeofday +.type gettimeofday,@function +gettimeofday: + mov $0xffffffffff600000,%rax + callq *%rax + cmpq $-128, %rax + jbe 1f + negl %eax + pushq %rax + call __errno_location + popq %rcx + movl %ecx,(%rax) + orq $-1, %rax +1: + ret +.Lhere: + .size gettimeofday,.Lhere-gettimeofday diff --git a/system/x86_64/start.S b/system/x86_64/start.S new file mode 100644 index 0000000..b31b9b1 --- /dev/null +++ b/system/x86_64/start.S @@ -0,0 +1,17 @@ +.text +.global _start +_start: + popq %rdi /* %rdi = argc */ + movq %rsp,%rsi /* %rsi = argv */ + pushq %rdi + + leaq 8(%rsi,%rdi,8),%rdx /* %rdx = envp = (8*rdi)+%rsi+8 */ + + movq %rdx, environ(%rip) + call main + movq %rax, %rdi /* return value */ + call exit + hlt +.Lstart: + .size _start,.Lstart-_start + diff --git a/system/x86_64/syscalls.h b/system/x86_64/syscalls.h new file mode 100644 index 0000000..b4f1476 --- /dev/null +++ b/system/x86_64/syscalls.h @@ -0,0 +1,20 @@ +#include <asm/unistd.h> + +#define syscall_weak(name,wsym,sym) \ +.text; \ +.type wsym,@function; \ +.weak wsym; \ +wsym: ; \ +.type sym,@function; \ +.global sym; \ +sym: \ + mov $__NR_##name,%al; \ + jmp __unified_syscall + +#define syscall(name,sym) \ +.text; \ +.type sym,@function; \ +.global sym; \ +sym: \ + mov $__NR_##name,%al; \ + jmp __unified_syscall diff --git a/system/x86_64/unified.S b/system/x86_64/unified.S new file mode 100644 index 0000000..c4dff7d --- /dev/null +++ b/system/x86_64/unified.S @@ -0,0 +1,27 @@ +#define SYS_exit 0x3c + +.text +.weak exit +exit: +.global _exit +_exit: + mov $SYS_exit,%al + +.global __unified_syscall +__unified_syscall: + movzbl %al, %eax + mov %rcx, %r10 + syscall + cmpq $-128, %rax + jbe .Lnoerror + negl %eax + pushq %rax + call __errno_location + popq %rcx + movl %ecx,(%rax) + orq $-1, %rax +.Lnoerror: + + ret +.Lhere: + .size __unified_syscall,.Lhere-__unified_syscall diff --git a/system/x86_64/waitpid.S b/system/x86_64/waitpid.S new file mode 100644 index 0000000..2a85491 --- /dev/null +++ b/system/x86_64/waitpid.S @@ -0,0 +1,10 @@ +.text +.type waitpid,@function +.weak waitpid +waitpid: +.type __libc_waitpid,@function +.global __libc_waitpid +__libc_waitpid: + xor %rcx,%rcx + mov $__NR_wait4,%al + jmp __unified_syscall |