arch/sparc/kernel/ttable_32.S

Source file repositories/reference/linux-study-clean/arch/sparc/kernel/ttable_32.S

File Facts

System
Linux kernel
Corpus path
arch/sparc/kernel/ttable_32.S
Extension
.S
Size
21032 bytes
Lines
419
Domain
Architecture Layer
Bucket
arch/sparc
Inferred role
Architecture Layer: arch/sparc
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

__HEAD

        .globl  _start
_start:

	.globl _stext
_stext:

	.globl  trapbase
trapbase:

#ifdef CONFIG_SMP
trapbase_cpu0:
#endif
/* We get control passed to us here at t_zero. */
t_zero:	b gokernel; nop; nop; nop;
t_tflt:	SRMMU_TFAULT                        /* Inst. Access Exception        */
t_bins:	TRAP_ENTRY(0x2, bad_instruction)    /* Illegal Instruction           */
t_pins:	TRAP_ENTRY(0x3, priv_instruction)   /* Privileged Instruction        */
t_fpd:	TRAP_ENTRY(0x4, fpd_trap_handler)   /* Floating Point Disabled       */
t_wovf:	WINDOW_SPILL                        /* Window Overflow               */
t_wunf:	WINDOW_FILL                         /* Window Underflow              */
t_mna:	TRAP_ENTRY(0x7, mna_handler)        /* Memory Address Not Aligned    */
t_fpe:	TRAP_ENTRY(0x8, fpe_trap_handler)   /* Floating Point Exception      */
t_dflt:	SRMMU_DFAULT                        /* Data Miss Exception           */
t_tio:	TRAP_ENTRY(0xa, do_tag_overflow)    /* Tagged Instruction Ovrflw     */
t_wpt:	TRAP_ENTRY(0xb, do_watchpoint)      /* Watchpoint Detected           */
t_badc:	BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
t_irq1:	TRAP_ENTRY_INTERRUPT(1)             /* IRQ Software/SBUS Level 1     */
t_irq2:	TRAP_ENTRY_INTERRUPT(2)             /* IRQ SBUS Level 2              */
t_irq3:	TRAP_ENTRY_INTERRUPT(3)             /* IRQ SCSI/DMA/SBUS Level 3     */
t_irq4:	TRAP_ENTRY_INTERRUPT(4)             /* IRQ Software Level 4          */
t_irq5:	TRAP_ENTRY_INTERRUPT(5)             /* IRQ SBUS/Ethernet Level 5     */
t_irq6:	TRAP_ENTRY_INTERRUPT(6)             /* IRQ Software Level 6          */
t_irq7:	TRAP_ENTRY_INTERRUPT(7)             /* IRQ Video/SBUS Level 5        */
t_irq8:	TRAP_ENTRY_INTERRUPT(8)             /* IRQ SBUS Level 6              */
t_irq9:	TRAP_ENTRY_INTERRUPT(9)             /* IRQ SBUS Level 7              */
t_irq10:TRAP_ENTRY_INTERRUPT(10)            /* IRQ Timer #1 (one we use)     */
t_irq11:TRAP_ENTRY_INTERRUPT(11)            /* IRQ Floppy Intr.              */
t_irq12:TRAP_ENTRY_INTERRUPT(12)            /* IRQ Zilog serial chip         */
t_irq13:TRAP_ENTRY_INTERRUPT(13)            /* IRQ Audio Intr.               */
t_irq14:TRAP_ENTRY_INTERRUPT(14)            /* IRQ Timer #2                  */

	.globl	t_nmi
t_nmi:	TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)

t_racc:	TRAP_ENTRY(0x20, do_reg_access)     /* General Register Access Error */
t_iacce:BAD_TRAP(0x21)                      /* Instr Access Error            */
t_bad22:BAD_TRAP(0x22)
	BAD_TRAP(0x23)
t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled)    /* Co-Processor Disabled         */
t_uflsh:SKIP_TRAP(0x25, unimp_flush)        /* Unimplemented FLUSH inst.     */
t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27)
t_cpexc:TRAP_ENTRY(0x28, do_cp_exception)   /* Co-Processor Exception        */
t_dacce:SRMMU_DFAULT                        /* Data Access Error             */
t_hwdz:	TRAP_ENTRY(0x2a, do_hw_divzero)     /* Division by zero, you lose... */
t_dserr:BAD_TRAP(0x2b)                      /* Data Store Error              */
t_daccm:BAD_TRAP(0x2c)                      /* Data Access MMU-Miss          */
t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
t_iaccm:BAD_TRAP(0x3c)                      /* Instr Access MMU-Miss         */
t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41)
t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46)
t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b)
t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50)
t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)

Annotation

Implementation Notes