3rd-party/linux-kernel-module-cheat
1
0
Fork 0
mirror of https://github.com/cirosantilli/linux-kernel-module-cheat.git synced 2026-01-23 02:05:57 +01:00
Code Issues Releases Wiki Activity

inline assembly: improve everywhere

Browse Source
This commit is contained in:
Ciro Santilli 六四事件 法轮功
2019-02-25 00:00:00 +00:00
parent 7ec28d6808
commit a30ed0f047
5 changed files with 62 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
baremetal/lib/syscalls.c
View File

@@ -64,13 +64,13 @@ int _write(int file, char *ptr, int len) {
void _exit(int status) {
#if defined(GEM5)
#if defined(__arm__)
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; .inst 0xEE000110 | (0x21 << 16);");
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; .inst 0xEE000110 | (0x21 << 16);" : : : "r0", "r1");
#elif defined(__aarch64__)
__asm__ __volatile__ ("mov x0, #0; .inst 0XFF000110 | (0x21 << 16);");
__asm__ __volatile__ ("mov x0, #0; .inst 0XFF000110 | (0x21 << 16);" : : : "x0");
#endif
#else
#if defined(__arm__)
__asm__ __volatile__ ("mov r0, #0x18; ldr r1, =#0x20026; svc 0x00123456");
__asm__ __volatile__ ("mov r0, #0x18; ldr r1, =#0x20026; svc 0x00123456" : : : "r0", "r1");
#elif defined(__aarch64__)
/* TODO actually use the exit value here, just for fun. */
__asm__ __volatile__ (
@@ -82,6 +82,9 @@ void _exit(int status) {
"mov x1, sp\n" \
"mov w0, #0x18\n" \
"hlt 0xf000\n"
:
:
: "x0", "x1"
);
#endif
#endif