summaryrefslogtreecommitdiff
path: root/src/kernel/arch/i386/registers.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/kernel/arch/i386/registers.h')
-rw-r--r--src/kernel/arch/i386/registers.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/kernel/arch/i386/registers.h b/src/kernel/arch/i386/registers.h
new file mode 100644
index 0000000..feba157
--- /dev/null
+++ b/src/kernel/arch/i386/registers.h
@@ -0,0 +1,13 @@
+#pragma once
+#include <stdint.h>
+
+struct registers {
+ uint32_t eax, ebx, ecx, edx, esi, edi;
+ void *ebp, *esp, *eip;
+};
+
+// saves a return value according to the SysV ABI
+inline void regs_savereturn(struct registers *regs, uint64_t value) {
+ regs->eax = value;
+ regs->edx = value >> 32;
+}