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arch/tile: factor out <arch/opcode.h> header

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The kernel code was using some <asm> headers that included a mix
of hardware-specific information (typically found in Tilera <arch>
headers) and structures, enums, and function declarations supporting
the disassembly function of the tile-desc.c sources.

This change refactors that code so that a hardware-specific, but
OS- and application-agnostic header, is created: <arch/opcode.h>.
This header is then exported to userspace along with the other
<arch> headers and can be used to build userspace code; in particular,
it is used by glibc as part of implementing the backtrace() function.

The new header, together with a header that specifically describes
the disassembly code (<asm/tile-desc.h> with _32 and _64 variants),
replaces the old <asm/opcode-tile*.h> and <asm/opcode_constants*.h>
headers.

As part of this change, we are also renaming the 32-bit constants
from TILE_xxx to TILEPRO_xxx to better reflect the fact that they
are specific to the TILEPro architecture, and not to TILE-Gx
and any successor "tile" architecture chips.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf
2011-11-02 23:02:17 -04:00
parent aeddea5d37
commit eb7c792da5
15 changed files with 4536 additions and 4359 deletions
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9
arch/tile/kernel/single_step.c
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@@ -25,9 +25,8 @@
#include <linux/types.h>
#include <linux/err.h>
#include <asm/cacheflush.h>
#include <asm/opcode-tile.h>
#include <asm/opcode_constants.h>
#include <arch/abi.h>
#include <arch/opcode.h>
#define signExtend17(val) sign_extend((val), 17)
#define TILE_X1_MASK (0xffffffffULL << 31)
@@ -118,7 +117,7 @@ static tile_bundle_bits rewrite_load_store_unaligned(
int val_reg, addr_reg, err, val;
/* Get address and value registers */
if (bundle & TILE_BUNDLE_Y_ENCODING_MASK) {
if (bundle & TILEPRO_BUNDLE_Y_ENCODING_MASK) {
addr_reg = get_SrcA_Y2(bundle);
val_reg = get_SrcBDest_Y2(bundle);
} else if (mem_op == MEMOP_LOAD || mem_op == MEMOP_LOAD_POSTINCR) {
@@ -229,7 +228,7 @@ P("\n");
}
++unaligned_fixup_count;
if (bundle & TILE_BUNDLE_Y_ENCODING_MASK) {
if (bundle & TILEPRO_BUNDLE_Y_ENCODING_MASK) {
/* Convert the Y2 instruction to a prefetch. */
bundle &= ~(create_SrcBDest_Y2(-1) |
create_Opcode_Y2(-1));
@@ -389,7 +388,7 @@ void single_step_once(struct pt_regs *regs)
state->branch_next_pc = 0;
state->update = 0;
if (!(bundle & TILE_BUNDLE_Y_ENCODING_MASK)) {
if (!(bundle & TILEPRO_BUNDLE_Y_ENCODING_MASK)) {
/* two wide, check for control flow */
int opcode = get_Opcode_X1(bundle);