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Subject[PATCH 3/3] x86: de-assembler-ize asm/desc.h
Date
asm/desc.h is included in three assembly files, but the only macro
it defines, GET_DESC_BASE, is never used. This patch removes the
includes, removes the macro GET_DESC_BASE and the ASSEMBLY guard
from asm/desc.h.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>

---
arch/x86/include/asm/desc.h | 26 --------------------------
arch/x86/kernel/entry_32.S | 1 -
arch/x86/kernel/head_32.S | 1 -
arch/x86/kernel/head_64.S | 1 -
4 files changed, 0 insertions(+), 29 deletions(-)

diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h
index c45f415..c993e9e 100644
--- a/arch/x86/include/asm/desc.h
+++ b/arch/x86/include/asm/desc.h
@@ -1,7 +1,6 @@
#ifndef _ASM_X86_DESC_H
#define _ASM_X86_DESC_H

-#ifndef __ASSEMBLY__
#include <asm/desc_defs.h>
#include <asm/ldt.h>
#include <asm/mmu.h>
@@ -380,29 +379,4 @@ static inline void set_system_intr_gate_ist(int n, void *addr, unsigned ist)
_set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS);
}

-#else
-/*
- * GET_DESC_BASE reads the descriptor base of the specified segment.
- *
- * Args:
- * idx - descriptor index
- * gdt - GDT pointer
- * base - 32bit register to which the base will be written
- * lo_w - lo word of the "base" register
- * lo_b - lo byte of the "base" register
- * hi_b - hi byte of the low word of the "base" register
- *
- * Example:
- * GET_DESC_BASE(GDT_ENTRY_ESPFIX_SS, %ebx, %eax, %ax, %al, %ah)
- * Will read the base address of GDT_ENTRY_ESPFIX_SS and put it into %eax.
- */
-#define GET_DESC_BASE(idx, gdt, base, lo_w, lo_b, hi_b) \
- movb idx * 8 + 4(gdt), lo_b; \
- movb idx * 8 + 7(gdt), hi_b; \
- shll $16, base; \
- movw idx * 8 + 2(gdt), lo_w;
-
-
-#endif /* __ASSEMBLY__ */
-
#endif /* _ASM_X86_DESC_H */
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 848f73f..9f8ce77 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -48,7 +48,6 @@
#include <asm/segment.h>
#include <asm/smp.h>
#include <asm/page_types.h>
-#include <asm/desc.h>
#include <asm/percpu.h>
#include <asm/dwarf2.h>
#include <asm/processor-flags.h>
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index dc5ed4b..8663afb 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -13,7 +13,6 @@
#include <asm/segment.h>
#include <asm/page_types.h>
#include <asm/pgtable_types.h>
-#include <asm/desc.h>
#include <asm/cache.h>
#include <asm/thread_info.h>
#include <asm/asm-offsets.h>
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index 54b29bb..fa54f78 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -12,7 +12,6 @@
#include <linux/linkage.h>
#include <linux/threads.h>
#include <linux/init.h>
-#include <asm/desc.h>
#include <asm/segment.h>
#include <asm/pgtable.h>
#include <asm/page.h>
--
1.5.4.3


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