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qemu-e2k/target/microblaze/cpu-param.h

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tcg: Split out target/arch/cpu-param.h For all targets, into this new file move TARGET_LONG_BITS, TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS, TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES. Include this new file from exec/cpu-defs.h. This now removes the somewhat odd requirement that target/arch/cpu.h defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the bulk of the includes within target/arch/cpu.h to the top. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-22 19:51:19 +01:00
/*
* MicroBlaze cpu parameters for qemu.
*
* Copyright (c) 2009 Edgar E. Iglesias
* SPDX-License-Identifier: LGPL-2.0+
*/
#ifndef MICROBLAZE_CPU_PARAM_H
#define MICROBLAZE_CPU_PARAM_H 1
target/microblaze: Reduce linux-user address space to 32-bit User-space programs cannot use the 64-bit lwea/swea instructions. We can improve code generation and runtime by restricting the user-only address space to 32-bit. Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-08-25 21:37:12 +02:00
/*
* While system mode can address up to 64 bits of address space,
* this is done via the lea/sea instructions, which are system-only
* (as they also bypass the mmu).
*
* We can improve the user-only experience by only exposing 32 bits
* of address space.
*/
#ifdef CONFIG_USER_ONLY
#define TARGET_LONG_BITS 32
#define TARGET_PHYS_ADDR_SPACE_BITS 32
#define TARGET_VIRT_ADDR_SPACE_BITS 32
#else
tcg: Split out target/arch/cpu-param.h For all targets, into this new file move TARGET_LONG_BITS, TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS, TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES. Include this new file from exec/cpu-defs.h. This now removes the somewhat odd requirement that target/arch/cpu.h defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the bulk of the includes within target/arch/cpu.h to the top. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-22 19:51:19 +01:00
#define TARGET_LONG_BITS 64
#define TARGET_PHYS_ADDR_SPACE_BITS 64
#define TARGET_VIRT_ADDR_SPACE_BITS 64
target/microblaze: Reduce linux-user address space to 32-bit User-space programs cannot use the 64-bit lwea/swea instructions. We can improve code generation and runtime by restricting the user-only address space to 32-bit. Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-08-25 21:37:12 +02:00
#endif
tcg: Split out target/arch/cpu-param.h For all targets, into this new file move TARGET_LONG_BITS, TARGET_PAGE_BITS, TARGET_PHYS_ADDR_SPACE_BITS, TARGET_VIRT_ADDR_SPACE_BITS, and NB_MMU_MODES. Include this new file from exec/cpu-defs.h. This now removes the somewhat odd requirement that target/arch/cpu.h defines TARGET_LONG_BITS before including exec/cpu-defs.h, so push the bulk of the includes within target/arch/cpu.h to the top. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-03-22 19:51:19 +01:00
/* FIXME: MB uses variable pages down to 1K but linux only uses 4k. */
#define TARGET_PAGE_BITS 12
#define NB_MMU_MODES 3
#endif
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