massive restructure

2026-07-30 01:02:17 +02:00
parent 0b0634530f
commit 438ce4c58e
32 changed files with 3558 additions and 0 deletions
@@ -0,0 +1,40 @@
+#include <linux/linkage.h>
+#include <asm/asm.h>
+#include <host_state.h>
+
+#define save_to_offset(val, REG)  movq val , GUEST_ ## REG ## _OFFSET (% _ASM_ARG1 )
+SYM_FUNC_START(capture_context)
+#ifdef ENDBR
+        ENDBR
+#endif
+        save_to_offset($0, RAX) /* save 0 for guest rax */
+        save_to_offset(%rbx, RBX)
+        save_to_offset(%rcx, RCX)
+        save_to_offset(%rdx, RDX)
+        save_to_offset(%rsi, RSI)
+        save_to_offset(%rdi, RDI)
+        save_to_offset(%rbp, RBP)
+
+        leaq 8(%rsp),%rax /* rsp after ret */
+        save_to_offset(%rax, RSP)
+
+        save_to_offset(%r8, R8)
+        save_to_offset(%r9, R9)
+        save_to_offset(%r10, R10)
+        save_to_offset(%r11, R11)
+        save_to_offset(%r12, R12)
+        save_to_offset(%r13, R13)
+        save_to_offset(%r14, R14)
+        save_to_offset(%r15, R15)
+
+        movq (%rsp), %rax /* return addr*/
+        save_to_offset(%rax, RIP)
+
+        pushfq
+        popq %rax /* rflags */
+        save_to_offset(%rax, RFLAGS)
+
+        mov $1, %rax;
+        RET
+
+SYM_FUNC_END(capture_context)