svn commit: r291442 - in head/sys/powerpc: aim include powerpc

[Nathan Whitehorn]

Author: nwhitehorn
Date: Sun Nov 29 07:16:08 2015
New Revision: 291442
URL: https://svnweb.freebsd.org/changeset/base/291442

Log:
  Make ELFv2 powerpc64 kernels build and run. Loader support will come in a
  separate commit.

Modified:
  head/sys/powerpc/aim/locore64.S
  head/sys/powerpc/include/asm.h
  head/sys/powerpc/powerpc/exec_machdep.c
  head/sys/powerpc/powerpc/swtch64.S
  head/sys/powerpc/powerpc/vm_machdep.c

Modified: head/sys/powerpc/aim/locore64.S
==============================================================================
--- head/sys/powerpc/aim/locore64.S	Sun Nov 29 06:40:09 2015	(r291441)
+++ head/sys/powerpc/aim/locore64.S	Sun Nov 29 07:16:08 2015	(r291442)
@@ -65,6 +65,10 @@
 #include <machine/spr.h>
 #include <machine/asm.h>
 
+#ifdef _CALL_ELF
+.abiversion _CALL_ELF
+#endif
+
 /* Locate the per-CPU data structure */
 #define GET_CPUINFO(r)  \
         mfsprg0  r

Modified: head/sys/powerpc/include/asm.h
==============================================================================
--- head/sys/powerpc/include/asm.h	Sun Nov 29 06:40:09 2015	(r291441)
+++ head/sys/powerpc/include/asm.h	Sun Nov 29 07:16:08 2015	(r291442)
@@ -87,7 +87,9 @@
         .tc name[TC],name
 #endif
 
-#if defined(__powerpc64__) && (!defined(_CALL_ELF) || _CALL_ELF == 1)
+#ifdef __powerpc64__
+
+#if !defined(_CALL_ELF) || _CALL_ELF == 1
 #define	_ENTRY(name) \
 	.section ".text"; \
 	.p2align 2; \
@@ -100,6 +102,17 @@
 	.p2align 4; \
 	TYPE_ENTRY(name) \
 DOT_LABEL(name):
+#else
+#define	_ENTRY(name) \
+	.text; \
+	.p2align 4; \
+	.globl	name; \
+	.type	name, at function; \
+name: \
+	addis	%r2, %r12, (.TOC.-name)@ha; \
+	addi	%r2, %r2, (.TOC.-name)@l; \
+	.localentry name, .-name;
+#endif
 
 #define	_END(name) \
 	.long	0; \

Modified: head/sys/powerpc/powerpc/exec_machdep.c
==============================================================================
--- head/sys/powerpc/powerpc/exec_machdep.c	Sun Nov 29 06:40:09 2015	(r291441)
+++ head/sys/powerpc/powerpc/exec_machdep.c	Sun Nov 29 07:16:08 2015	(r291442)
@@ -972,11 +972,12 @@ cpu_set_upcall(struct thread *td, struct
 	cf->cf_arg1 = (register_t)tf;
 
 	pcb2->pcb_sp = (register_t)cf;
-	#ifdef __powerpc64__
+	#if defined(__powerpc64__) && (!defined(_CALL_ELF) || _CALL_ELF == 1)
 	pcb2->pcb_lr = ((register_t *)fork_trampoline)[0];
 	pcb2->pcb_toc = ((register_t *)fork_trampoline)[1];
 	#else
 	pcb2->pcb_lr = (register_t)fork_trampoline;
+	pcb2->pcb_context[0] = pcb2->pcb_lr;
 	#endif
 	pcb2->pcb_cpu.aim.usr_vsid = 0;
 

Modified: head/sys/powerpc/powerpc/swtch64.S
==============================================================================
--- head/sys/powerpc/powerpc/swtch64.S	Sun Nov 29 06:40:09 2015	(r291441)
+++ head/sys/powerpc/powerpc/swtch64.S	Sun Nov 29 07:16:08 2015	(r291442)
@@ -65,6 +65,10 @@
 #include <machine/param.h>
 #include <machine/asm.h>
 
+#ifdef _CALL_ELF
+.abiversion _CALL_ELF
+#endif
+
 TOC_ENTRY(blocked_lock)
 
 /*

Modified: head/sys/powerpc/powerpc/vm_machdep.c
==============================================================================
--- head/sys/powerpc/powerpc/vm_machdep.c	Sun Nov 29 06:40:09 2015	(r291441)
+++ head/sys/powerpc/powerpc/vm_machdep.c	Sun Nov 29 07:16:08 2015	(r291442)
@@ -143,7 +143,7 @@ cpu_fork(struct thread *td1, struct proc
 
 	cf = (struct callframe *)tf - 1;
 	memset(cf, 0, sizeof(struct callframe));
-	#ifdef __powerpc64__
+	#if defined(__powerpc64__) && (!defined(_CALL_ELF) || _CALL_ELF == 1)
 	cf->cf_toc = ((register_t *)fork_return)[1];
 	#endif
 	cf->cf_func = (register_t)fork_return;
@@ -152,11 +152,12 @@ cpu_fork(struct thread *td1, struct proc
 
 	pcb->pcb_sp = (register_t)cf;
 	KASSERT(pcb->pcb_sp % 16 == 0, ("stack misaligned"));
-	#ifdef __powerpc64__
+	#if defined(__powerpc64__) && (!defined(_CALL_ELF) || _CALL_ELF == 1)
 	pcb->pcb_lr = ((register_t *)fork_trampoline)[0];
 	pcb->pcb_toc = ((register_t *)fork_trampoline)[1];
 	#else
 	pcb->pcb_lr = (register_t)fork_trampoline;
+	pcb->pcb_context[0] = pcb->pcb_lr;
 	#endif
 	#ifdef AIM
 	pcb->pcb_cpu.aim.usr_vsid = 0;