coda

05/musl-0.6.0/src/syscall.s

@@ -0,0 +1,30 @@
+# this file is necessary because tcc doesn't like musl's inline-assembly implementation
+# of syscall
+.global syscall0
+.global syscall1
+.global syscall2
+.global syscall3
+.global syscall4
+.global syscall5
+.global syscall6
+
+syscall0:
+syscall1:
+syscall2:
+syscall3:
+syscall4:
+syscall5:
+syscall6:
+	# SysV calling convention:          RDI, RSI, RDX, RCX, R8,  R9, 8(%rsp)
+	# Linux syscall calling convention: RAX, RDI, RSI, RDX, R10, R8, R9
+	mov %rdi, %rax
+	mov %rsi, %rdi
+	mov %rdx, %rsi
+	mov %rcx, %rdx
+	mov %r8, %r10
+	mov %r9, %r8
+	mov 8(%rsp), %r9
+	syscall
+	mov %rax, %rdi
+	call __syscall_ret
+	ret