diff options
author | Sam Ravnborg <sam@ravnborg.org> | 2008-07-27 23:00:59 +0200 |
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committer | Sam Ravnborg <sam@ravnborg.org> | 2008-07-27 23:00:59 +0200 |
commit | a439fe51a1f8eb087c22dd24d69cebae4a3addac (patch) | |
tree | e32d1fa97a220ab598d8ab364205817c5bf2bd6f /arch/sparc/include/asm/head_32.h | |
parent | 837b41b5de356aa67abb2cadb5eef3efc7776f91 (diff) | |
download | linux-a439fe51a1f8eb087c22dd24d69cebae4a3addac.tar.bz2 |
sparc, sparc64: use arch/sparc/include
The majority of this patch was created by the following script:
***
ASM=arch/sparc/include/asm
mkdir -p $ASM
git mv include/asm-sparc64/ftrace.h $ASM
git rm include/asm-sparc64/*
git mv include/asm-sparc/* $ASM
sed -ie 's/asm-sparc64/asm/g' $ASM/*
sed -ie 's/asm-sparc/asm/g' $ASM/*
***
The rest was an update of the top-level Makefile to use sparc
for header files when sparc64 is being build.
And a small fixlet to pick up the correct unistd.h from
sparc64 code.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'arch/sparc/include/asm/head_32.h')
-rw-r--r-- | arch/sparc/include/asm/head_32.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/head_32.h b/arch/sparc/include/asm/head_32.h new file mode 100644 index 000000000000..7c35491a8b53 --- /dev/null +++ b/arch/sparc/include/asm/head_32.h @@ -0,0 +1,102 @@ +#ifndef __SPARC_HEAD_H +#define __SPARC_HEAD_H + +#define KERNBASE 0xf0000000 /* First address the kernel will eventually be */ +#define LOAD_ADDR 0x4000 /* prom jumps to us here unless this is elf /boot */ +#define SUN4C_SEGSZ (1 << 18) +#define SRMMU_L1_KBASE_OFFSET ((KERNBASE>>24)<<2) /* Used in boot remapping. */ +#define INTS_ENAB 0x01 /* entry.S uses this. */ + +#define SUN4_PROM_VECTOR 0xFFE81000 /* SUN4 PROM needs to be hardwired */ + +#define WRITE_PAUSE nop; nop; nop; /* Have to do this after %wim/%psr chg */ +#define NOP_INSN 0x01000000 /* Used to patch sparc_save_state */ + +/* Here are some trap goodies */ + +/* Generic trap entry. */ +#define TRAP_ENTRY(type, label) \ + rd %psr, %l0; b label; rd %wim, %l3; nop; + +/* Data/text faults. Defaults to sun4c version at boot time. */ +#define SPARC_TFAULT rd %psr, %l0; rd %wim, %l3; b sun4c_fault; mov 1, %l7; +#define SPARC_DFAULT rd %psr, %l0; rd %wim, %l3; b sun4c_fault; mov 0, %l7; +#define SRMMU_TFAULT rd %psr, %l0; rd %wim, %l3; b srmmu_fault; mov 1, %l7; +#define SRMMU_DFAULT rd %psr, %l0; rd %wim, %l3; b srmmu_fault; mov 0, %l7; + +/* This is for traps we should NEVER get. */ +#define BAD_TRAP(num) \ + rd %psr, %l0; mov num, %l7; b bad_trap_handler; rd %wim, %l3; + +/* This is for traps when we want just skip the instruction which caused it */ +#define SKIP_TRAP(type, name) \ + jmpl %l2, %g0; rett %l2 + 4; nop; nop; + +/* Notice that for the system calls we pull a trick. We load up a + * different pointer to the system call vector table in %l7, but call + * the same generic system call low-level entry point. The trap table + * entry sequences are also HyperSparc pipeline friendly ;-) + */ + +/* Software trap for Linux system calls. */ +#define LINUX_SYSCALL_TRAP \ + sethi %hi(sys_call_table), %l7; \ + or %l7, %lo(sys_call_table), %l7; \ + b linux_sparc_syscall; \ + rd %psr, %l0; + +#define BREAKPOINT_TRAP \ + b breakpoint_trap; \ + rd %psr,%l0; \ + nop; \ + nop; + +#ifdef CONFIG_KGDB +#define KGDB_TRAP(num) \ + b kgdb_trap_low; \ + rd %psr,%l0; \ + nop; \ + nop; +#else +#define KGDB_TRAP(num) \ + BAD_TRAP(num) +#endif + +/* The Get Condition Codes software trap for userland. */ +#define GETCC_TRAP \ + b getcc_trap_handler; mov %psr, %l0; nop; nop; + +/* The Set Condition Codes software trap for userland. */ +#define SETCC_TRAP \ + b setcc_trap_handler; mov %psr, %l0; nop; nop; + +/* The Get PSR software trap for userland. */ +#define GETPSR_TRAP \ + mov %psr, %i0; jmp %l2; rett %l2 + 4; nop; + +/* This is for hard interrupts from level 1-14, 15 is non-maskable (nmi) and + * gets handled with another macro. + */ +#define TRAP_ENTRY_INTERRUPT(int_level) \ + mov int_level, %l7; rd %psr, %l0; b real_irq_entry; rd %wim, %l3; + +/* NMI's (Non Maskable Interrupts) are special, you can't keep them + * from coming in, and basically if you get one, the shows over. ;( + * On the sun4c they are usually asynchronous memory errors, on the + * the sun4m they could be either due to mem errors or a software + * initiated interrupt from the prom/kern on an SMP box saying "I + * command you to do CPU tricks, read your mailbox for more info." + */ +#define NMI_TRAP \ + rd %wim, %l3; b linux_trap_nmi_sun4c; mov %psr, %l0; nop; + +/* Window overflows/underflows are special and we need to try to be as + * efficient as possible here.... + */ +#define WINDOW_SPILL \ + rd %psr, %l0; rd %wim, %l3; b spill_window_entry; andcc %l0, PSR_PS, %g0; + +#define WINDOW_FILL \ + rd %psr, %l0; rd %wim, %l3; b fill_window_entry; andcc %l0, PSR_PS, %g0; + +#endif /* __SPARC_HEAD_H */ |