syscall.sh / riscv64 / pread64
pread64
read from or write to a file descriptor at a given offset
sys_pread64(unsigned int fd, char *buf, size_t count, loff_t pos)| number | 67 (0x43) |
|---|---|
| abi | common |
| entry point | sys_pread64 |
| since | Linux 4.15 |
| man page | pread64(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
a7 | 67, the syscall number |
a0 | unsigned int fd |
a1 | char *buf |
a2 | size_t count |
a3 | loff_t pos |
a0 | the return value |
Then run ecall to enter the kernel.
Same syscall on other architectures
- x64 17
- x86 180
- arm64 67
- arm 180
- x32 1073741841
- loongarch64 67
- ppc64 179
- ppc 179
- s390x 180
- mips64 5016
- mipsn32 6016
- mipso32 4200
- alpha 349
- arc 67
- csky 67
- hexagon 67
- m68k 180
- microblaze 180
- nios2 67
- openrisc 67
- parisc 108
- sh 180
- sparc 67
- sparc64 67
- xtensa 30
Get this as JSON: https://api.syscall.sh/v2/syscalls/riscv64/pread64