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MIPS: Add SYSCALL to uasm. 

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/976/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2010-02-18 16:13:03 -08:00 committed by Ralf Baechle
parent 847253b948
commit 58b9e2239f
2 changed files with 18 additions and 2 deletions
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1
arch/mips/include/asm/uasm.h
View File

@ -102,6 +102,7 @@ Ip_0(_tlbwr);
Ip_u3u1u2(_xor);
Ip_u2u1u3(_xori);
Ip_u2u1msbu3(_dins);
Ip_u1(_syscall);
/* Handle labels. */
struct uasm_label {

19
arch/mips/mm/uasm.c
View File

@ -31,7 +31,8 @@ enum fields {
BIMM = 0x040,
JIMM = 0x080,
FUNC = 0x100,
SET = 0x200
SET = 0x200,
SCIMM = 0x400
};
#define OP_MASK 0x3f
@ -52,6 +53,8 @@ enum fields {
#define FUNC_SH 0
#define SET_MASK 0x7
#define SET_SH 0
#define SCIMM_MASK 0xfffff
#define SCIMM_SH 6
enum opcode {
insn_invalid,
@ -64,7 +67,7 @@ enum opcode {
insn_mtc0, insn_ori, insn_pref, insn_rfe, insn_sc, insn_scd,
insn_sd, insn_sll, insn_sra, insn_srl, insn_rotr, insn_subu, insn_sw,
insn_tlbp, insn_tlbr, insn_tlbwi, insn_tlbwr, insn_xor, insn_xori,
insn_dins
insn_dins, insn_syscall
};
struct insn {
@ -136,6 +139,7 @@ static struct insn insn_table[] __cpuinitdata = {
{ insn_xor, M(spec_op, 0, 0, 0, 0, xor_op), RS | RT | RD },
{ insn_xori, M(xori_op, 0, 0, 0, 0, 0), RS | RT | UIMM },
{ insn_dins, M(spec3_op, 0, 0, 0, 0, dins_op), RS | RT | RD | RE },
{ insn_syscall, M(spec_op, 0, 0, 0, 0, syscall_op), SCIMM},
{ insn_invalid, 0, 0 }
};
@ -208,6 +212,14 @@ static inline __cpuinit u32 build_jimm(u32 arg)
return (arg >> 2) & JIMM_MASK;
}
static inline __cpuinit u32 build_scimm(u32 arg)
{
if (arg & ~SCIMM_MASK)
printk(KERN_WARNING "Micro-assembler field overflow\n");
return (arg & SCIMM_MASK) << SCIMM_SH;
}
static inline __cpuinit u32 build_func(u32 arg)
{
if (arg & ~FUNC_MASK)
@ -266,6 +278,8 @@ static void __cpuinit build_insn(u32 **buf, enum opcode opc, ...)
op |= build_func(va_arg(ap, u32));
if (ip->fields & SET)
op |= build_set(va_arg(ap, u32));
if (ip->fields & SCIMM)
op |= build_scimm(va_arg(ap, u32));
va_end(ap);
**buf = op;
@ -391,6 +405,7 @@ I_0(_tlbwr)
I_u3u1u2(_xor)
I_u2u1u3(_xori)
I_u2u1msbu3(_dins);
I_u1(_syscall);
/* Handle labels. */
void __cpuinit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid)