kernel: pass more information to user on interrupt

This is meant to facilitate a syscall for returning from interrupts, which
will actually work in the general case as opposed to the current hack, which
only works if the interrupt occured during a syscall (which is correct... for
now).

1 files changed, 11 insertions, 2 deletions

diff --git a/src/libk/include/camellia/types.h b/src/libk/include/camellia/types.h
index 3117877..9cbd386 100644
--- a/src/libk/include/camellia/types.h
+++ b/src/libk/include/camellia/types.h
@@ -33,8 +33,17 @@ struct ufs_request {
 };
 
 struct intr_data {
-	void __user *ip;
-	void __user *sp; /* last for pop %rsp */
+	/* same order as CpuRegs.
+	 * notable omissions:
+	 * - SSE registers (usually there's no need to save them, userland can do
+	 *                  that itself if it wants)
+	 * - FLAGS (so the kernel doesn't need to care about sanitizing it) */
+	uint64_t r15, r14, r13, r12, r11, r10, r9, r8;
+	uint64_t rdi, rsi;
+	userptr_t rbp, rsp;
+	uint64_t rbx, rdx, rcx, rax, rip;
+
+	char msg[]; /* variable size, NUL terminated */
 };
 
 struct sys_wait2 {