syscall.sh / riscv64 / brk
brk
change data segment size
sys_brk(unsigned long brk)| number | 214 (0xd6) |
|---|---|
| abi | common |
| entry point | sys_brk |
| since | Linux 4.15 |
| man page | brk(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
a7 | 214, the syscall number |
a0 | unsigned long brk |
a0 | the return value |
Then run ecall to enter the kernel.
Same syscall on other architectures
- x64 12
- x86 45
- arm64 214
- arm 45
- x32 1073741836
- loongarch64 214
- ppc64 45
- ppc 45
- s390x 45
- mips64 5012
- mipsn32 6012
- mipso32 4045
- alpha 17
- arc 214
- csky 214
- hexagon 214
- m68k 45
- microblaze 45
- nios2 214
- openrisc 214
- parisc 45
- sh 45
- sparc 17
- sparc64 17
- xtensa 83
Get this as JSON: https://api.syscall.sh/v2/syscalls/riscv64/brk