powerpc/64e: fix CONFIG_RELOCATABLE build warnings

CONFIG_RELOCATABLE=y causes build warnings from unresolved relocations.
Fix these by using TOC addressing for these cases.

Commit 24d33ac ("powerpc/64s: Make prom_init require RELOCATABLE")
caused some 64e configs to select RELOCATABLE resulting in these
warnings, but the underlying issue was already there.

This passes basic qemu testing.

Signed-off-by: Nicholas Piggin <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: npiggin

arch/powerpc/kernel/exceptions-64e.S

@@ -912,8 +912,14 @@ kernel_dbg_exc:
 	b	interrupt_return
 
 .macro SEARCH_RESTART_TABLE
+#ifdef CONFIG_RELOCATABLE
+	ld	r11,PACATOC(r13)
+	ld	r14,__start___restart_table@got(r11)
+	ld	r15,__stop___restart_table@got(r11)
+#else
 	LOAD_REG_IMMEDIATE_SYM(r14, r11, __start___restart_table)
 	LOAD_REG_IMMEDIATE_SYM(r15, r11, __stop___restart_table)
+#endif
 300:
 	cmpd	r14,r15
 	beq	302f
@@ -1329,7 +1335,12 @@ a2_tlbinit_code_start:
 a2_tlbinit_after_linear_map:
 
 	/* Now we branch the new virtual address mapped by this entry */
+#ifdef CONFIG_RELOCATABLE
+	ld	r5,PACATOC(r13)
+	ld	r3,1f@got(r5)
+#else
 	LOAD_REG_IMMEDIATE_SYM(r3, r5, 1f)
+#endif
 	mtctr	r3
 	bctr