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linux-user: Define TASK_UNMAPPED_BASE in $guest/target_mman.h

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Provide default values that are as close as possible to the
values used by the guest's kernel.

Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-08-02 14:29:40 -07:00
parent c8fb5cf97d
commit 2d708164e0
21 changed files with 167 additions and 14 deletions
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14
linux-user/sparc/target_mman.h
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@ -5,6 +5,20 @@
#define TARGET_MAP_LOCKED 0x100
#define TARGET_MAP_GROWSDOWN 0x0200
/*
* arch/sparc/include/asm/page_64.h:
* TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \
* _AC(0x0000000070000000,UL) : \
* VA_EXCLUDE_END)
* But VA_EXCLUDE_END is > 0xffff800000000000UL which doesn't work
* in userland emulation.
*/
#ifdef TARGET_ABI32
#define TASK_UNMAPPED_BASE 0x70000000
#else
#define TASK_UNMAPPED_BASE (1ull << (TARGET_VIRT_ADDR_SPACE_BITS - 2))
#endif
#include "../generic/target_mman.h"
#endif