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- add fpu states

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- add needed asm_offsets
- start of exception handling


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26073 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
François Revol
2008-06-22 01:36:52 +00:00
parent feeb7a7124
commit 35471ac53e
7 changed files with 196 additions and 64 deletions
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headers/private/kernel/arch/m68k/arch_cpu.h
+83 -2
View File
@@ -5,10 +5,17 @@
#ifndef _KERNEL_ARCH_M68K_CPU_H
#define _KERNEL_ARCH_M68K_CPU_H
#ifndef _ASSEMBLER
#include <arch/m68k/arch_thread_types.h>
#include <kernel.h>
#endif // !_ASSEMBLER
#ifndef _ASSEMBLER
/* 68k has many different possible stack frames, differentiated by a 4 bit number,
* but they also depend on the cpu type.
@@ -195,11 +202,83 @@ struct mc680x0_frame {
};
};
struct mc680x0_null_fpu_state {
uint8 version; // 0
uint8 type; // undefined
uint16 dummy;
};
struct mc680x0_type_00_fpu_state {
uint8 version;
uint8 type; // 0
uint16 dummy;
};
struct mc680x0_type_28_fpu_state {
uint8 version;
uint8 type; // 0x28
uint16 dummy;
// XXX: replace dummies
uint32 dummies[0x28/4];
};
struct mc680x0_type_60_fpu_state {
uint8 version;
uint8 type; // 0x60
uint16 dummy;
// XXX: replace dummies
uint32 dummies[0x60/4];
};
//XXX: those are 040, add others
// biggest known:
struct mc68882_type_d4_fpu_state {
uint8 version;
uint8 type; // 0xd4
uint16 dummy;
// XXX: replace dummies
uint32 dummies[0xd4/4];
};
struct mc680x0_fpu_state {
union {
struct {
uint8 version;
uint8 type; // 0x60
uint16 dummy;
};
struct mc680x0_null_fpu_state null;
struct mc680x0_type_00_fpu_state type_00;
struct mc680x0_type_28_fpu_state type_28;
struct mc680x0_type_60_fpu_state type_60;
struct mc68882_type_d4_fpu_state type_d4;
};
};
// 96-bit format
struct mc680x0_fp_data_reg {
uint8 data[12];
};
struct mc680x0_fp_control_regs {
uint32 fpcr;
uint32 fpsr;
uint32 fpiar;
};
#warning M68K: check for missing regs/movem
struct iframe {
// XXX: fp_frame ?
/* fpu data registers */
#warning M68K: sizeof(fp*)
struct mc680x0_fp_data_reg fp[8];
/* fpu control registers */
struct mc680x0_fp_control_regs fpc;
/* fpu state */
struct mc680x0_fpu_state fpu;
/* data and address registers */
// XXX: order depends on movem
uint32 d[8];
uint32 a[7];
/* cpu exception frame, including sr, pc, format and vector */
@@ -438,4 +517,6 @@ extern int arch_platform;
SPRG3: TLS base pointer (only for userland threads)
*/
#endif // !_ASSEMBLER
#endif /* _KERNEL_ARCH_PPC_CPU_H */
headers/private/kernel/arch/m68k/arch_thread_types.h
+2
View File
@@ -5,6 +5,8 @@
#ifndef KERNEL_ARCH_M68K_THREAD_TYPES_H
#define KERNEL_ARCH_M68K_THREAD_TYPES_H
#include <kernel.h>
#define IFRAME_TRACE_DEPTH 4
struct iframe_stack {