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| author | Luca Dariz <luca@orpolo.org> | 2024-09-04 22:18:04 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-09-08 01:03:35 +0200 |
| commit | e10d0db83b66678a215572d84d23576f5df5a774 (patch) | |
| tree | 5c1f04777c5a3dc12914cf50f7fb127d9f29c89c /i386/include | |
| parent | 3a6147244fa0fcadec05e3426a35660682858df8 (diff) | |
| download | gnumach-e10d0db83b66678a215572d84d23576f5df5a774.tar.gz gnumach-e10d0db83b66678a215572d84d23576f5df5a774.tar.bz2 gnumach-e10d0db83b66678a215572d84d23576f5df5a774.zip | |
add xfloat thread state interface
* i386/i386/fpu.c: extend current getter and setter to support the
extended state; move the struct casting here to reuse the locking
and allocation logic for the thread state; make sure the new state
is set as valid, otherwise it won't be applied; add
i386_get_xstate_size() to dynamically retrieve the FPU state size.
* i386/i386/fpu.h: update prototypes to accept generic thread state
* i386/i386/pcb.c: forward raw thread state to getter and setter, only
checking for minimum size and use the new i386_get_xstate_size()
helper.
* i386/include/mach/i386/mach_i386.defs: expose the new helper
i386_get_xstate_size().
* i386/include/mach/i386/thread_status.h: add interface definition for
I386_XFLOAT_STATE and the corresponding data structure.
Message-ID: <20240904201806.510082-1-luca@orpolo.org>
Diffstat (limited to 'i386/include')
| -rw-r--r-- | i386/include/mach/i386/mach_i386.defs | 7 | ||||
| -rw-r--r-- | i386/include/mach/i386/thread_status.h | 12 |
2 files changed, 19 insertions, 0 deletions
diff --git a/i386/include/mach/i386/mach_i386.defs b/i386/include/mach/i386/mach_i386.defs index 965d5c3b..78bbc2ed 100644 --- a/i386/include/mach/i386/mach_i386.defs +++ b/i386/include/mach/i386/mach_i386.defs @@ -111,3 +111,10 @@ routine i386_get_gdt( target_thread : thread_t; selector : int; out desc : descriptor_t); + +/* Returns the size in bytes of the FPU extended state, to be used + with i386_XFLOAT_STATE instead of i386_XFLOAT_STATE_COUNT. + */ +routine i386_get_xstate_size( + host : host_t; + out size : vm_size_t); diff --git a/i386/include/mach/i386/thread_status.h b/i386/include/mach/i386/thread_status.h index 94596a74..2f472247 100644 --- a/i386/include/mach/i386/thread_status.h +++ b/i386/include/mach/i386/thread_status.h @@ -58,6 +58,7 @@ #define i386_REGS_SEGS_STATE 5 #define i386_DEBUG_STATE 6 #define i386_FSGS_BASE_STATE 7 +#define i386_XFLOAT_STATE 8 /* * This structure is used for both @@ -148,6 +149,17 @@ struct i386_float_state { }; #define i386_FLOAT_STATE_COUNT (sizeof(struct i386_float_state)/sizeof(unsigned int)) +struct i386_xfloat_state { + int fpkind; /* FP_NO..FP_387X (readonly) */ + int initialized; + int exc_status; /* exception status (readonly) */ + int fp_save_kind; /* format of hardware state */ + unsigned char hw_state[]; /* actual "hardware" state */ + /* don't add anything here, as hw_state is dynamically sized */ +}; +/* NOTE: i386_XFLOAT_STATE_COUNT is not defined as i386_xfloat_state is + * dynamically sized. Use i386_get_xstate_size(host) to get the current + * size. */ #define PORT_MAP_BITS 0x400 struct i386_isa_port_map_state { |