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port to riscv{32,64}

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This commit is contained in:
MaxHearnden 2023-11-28 04:00:59 +00:00
parent c487ab80c2
commit f3cf29ed11
1 changed files with 94 additions and 0 deletions
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94
sysa/wrap.c
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@ -126,6 +126,100 @@ int chroot(char *path) {
);
}
#elif __riscv && __riscv_xlen==32
int unshare(int flags) {
asm (
"rd_a0 rs1_fp !-4 lw"
"rd_a7 !97 addi"
"ecall"
);
}
int geteuid() {
asm (
"rd_a7 !175 addi"
"ecall"
);
}
int getegid() {
asm (
"rd_a7 !177 addi"
"ecall"
);
}
int mount (
char *source, char *target, char *filesystemtype,
unsigned mountflags, void *data
) {
asm (
"rd_a0 rs1_fp !-4 lw"
"rd_a1 rs1_fp !-8 lw"
"rd_a2 rs1_fp !-12 lw"
"rd_a3 rs1_fp !-16 lw"
"rd_a4 rs1_fp !-20 lw"
"rd_a7 !40 addi"
"ecall"
);
}
int chroot(char *path) {
asm (
"rd_a0 rs1_fp !-4 lw"
"rd_a7 !51 addi"
"ecall"
);
}
#elif __riscv && __riscv_xlen==64
int unshare(int flags) {
asm (
"rd_a0 rs1_fp !-8 ld"
"rd_a7 !97 addi"
"ecall"
);
}
int geteuid() {
asm (
"rd_a7 !175 addi"
"ecall"
);
}
int getegid() {
asm (
"rd_a7 !177 addi"
"ecall"
);
}
int mount (
char *source, char *target, char *filesystemtype,
unsigned mountflags, void *data
) {
asm (
"rd_a0 rs1_fp !-8 ld"
"rd_a1 rs1_fp !-16 ld"
"rd_a2 rs1_fp !-24 ld"
"rd_a3 rs1_fp !-32 ld"
"rd_a4 rs1_fp !-40 ld"
"rd_a7 !40 addi"
"ecall"
);
}
int chroot(char *path) {
asm (
"rd_a0 rs1_fp !-8 ld"
"rd_a7 !51 addi"
"ecall"
);
}
#else
#error arch not supported