amd64: seemingly working syscalls (SYSCALL/SYSRET)

1 files changed, 5 insertions, 7 deletions

diff --git a/src/kernel/arch/amd64/registers.h b/src/kernel/arch/amd64/registers.h
index e365e2c..c98c647 100644
--- a/src/kernel/arch/amd64/registers.h
+++ b/src/kernel/arch/amd64/registers.h
@@ -3,16 +3,14 @@
 #include <stdint.h>
 
 struct registers {
-	uint64_t edi, esi;
-	userptr_t ebp, esp;
-	uint64_t ebx, edx, ecx, eax;
-
-	userptr_t eip;
+	uint64_t r15, r14, r13, r12, r11, r10, r9, r8;
+	uint64_t rdi, rsi;
+	userptr_t rbp, rsp;
+	uint64_t rbx, rdx, rcx, rax;
 } __attribute__((__packed__));
 
 // saves a return value according to the SysV ABI
 static inline uint64_t regs_savereturn(struct registers *regs, uint64_t value) {
-	regs->eax = value;
-	regs->edx = value >> 32; // TODO check ABI
+	regs->rax = value;
 	return value;
 }