Implement process clone trampoline

2026-03-07 20:20:29 +01:00
parent bf99bedfc5
commit ab8856cf4b
9 changed files with 68 additions and 12 deletions
--- a/libprocess/amd64/.gitignore
+++ b/libprocess/amd64/.gitignore
@@ -0,0 +1 @@
+*.o
--- a/libprocess/amd64/clone_tramp.S
+++ b/libprocess/amd64/clone_tramp.S
@@ -0,0 +1,7 @@
+.global _clone_tramp
+_clone_tramp:
+  xorq %rbp, %rbp
+  movq %rsp, %rbp
+  andq $-16, %rsp
+
+  callq _clone_tramp1
--- a/libprocess/amd64/clone_tramp1.c
+++ b/libprocess/amd64/clone_tramp1.c
@@ -0,0 +1,12 @@
+#include <liballoc.h>
+#include <process.h>
+#include <system.h>
+
+void _clone_tramp1 (void) {
+  struct process_data* pdata = argument_ptr ();
+
+  pdata->fn (pdata->arg_ptr);
+
+  free (pdata);
+  quit ();
+}
--- a/libprocess/amd64/src.mk
+++ b/libprocess/amd64/src.mk
@@ -0,0 +1,6 @@
+c += amd64/clone_tramp1.c
+
+S += amd64/clone_tramp.S
+
+o += amd64/clone_tramp.o \
+		 amd64/clone_tramp1.o