syscall.sh / riscv64 / mmap
mmap
map or unmap files or devices into memory
sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long offset)| number | 222 (0xde) |
|---|---|
| abi | 64 |
| entry point | sys_mmap |
| since | Linux 4.15 |
| man page | mmap(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
a7 | 222, the syscall number |
a0 | unsigned long addr |
a1 | unsigned long len |
a2 | unsigned long prot |
a3 | unsigned long flags |
a4 | unsigned long fd |
a5 | unsigned long offset |
a0 | the return value |
Then run ecall to enter the kernel.
Same syscall on other architectures
- x64 9
- x86 90
- arm64 222
- x32 1073741833
- loongarch64 222
- ppc64 90
- ppc 90
- s390x 90
- mips64 5009
- mipsn32 6009
- mipso32 4090
- alpha 71
- m68k 90
- microblaze 90
- parisc 90
- sh 90
- sparc 71
- sparc64 71
Get this as JSON: https://api.syscall.sh/v2/syscalls/riscv64/mmap