DeforaOS/Asm
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Now encoding sethi instructions as well

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This commit is contained in:
Pierre Pronchery 2011-04-21 16:28:35 +00:00
parent 9b692011ca
commit 33039927e3
2 changed files with 31 additions and 1 deletions
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30
src/arch/sparc.c
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@ -65,6 +65,8 @@ ArchPlugin arch_plugin =
/* sparc_write */ /* sparc_write */
static int _write_loadstore(ArchPlugin * plugin, ArchInstruction * instruction, static int _write_loadstore(ArchPlugin * plugin, ArchInstruction * instruction,
ArchInstructionCall * call, uint32_t * opcode); ArchInstructionCall * call, uint32_t * opcode);
static int _write_sethi(ArchPlugin * plugin, ArchInstruction * instruction,
ArchInstructionCall * call, uint32_t * opcode);
static int _sparc_write(ArchPlugin * plugin, ArchInstruction * instruction, static int _sparc_write(ArchPlugin * plugin, ArchInstruction * instruction,
ArchInstructionCall * call) ArchInstructionCall * call)
@ -74,6 +76,9 @@ static int _sparc_write(ArchPlugin * plugin, ArchInstruction * instruction,
if((opcode & 0xc0000000) == 0xc0000000 && _write_loadstore(plugin, if((opcode & 0xc0000000) == 0xc0000000 && _write_loadstore(plugin,
instruction, call, &opcode) != 0) instruction, call, &opcode) != 0)
return -1; return -1;
else if((opcode & 0x01000000) == 0x01000000 && _write_sethi(plugin,
instruction, call, &opcode) != 0)
return -1;
/* FIXME implement the rest */ /* FIXME implement the rest */
opcode = _htob32(opcode); opcode = _htob32(opcode);
if(fwrite(&opcode, sizeof(opcode), 1, plugin->helper->fp) != 1) if(fwrite(&opcode, sizeof(opcode), 1, plugin->helper->fp) != 1)
@ -166,3 +171,28 @@ static int _write_loadstore(ArchPlugin * plugin, ArchInstruction * instruction,
*opcode |= (rd | rs1 | rs2); *opcode |= (rd | rs1 | rs2);
return 0; return 0;
} }
static int _write_sethi(ArchPlugin * plugin, ArchInstruction * instruction,
ArchInstructionCall * call, uint32_t * opcode)
{
ArchPluginHelper * helper = plugin->helper;
uint32_t rd;
uint32_t value;
char const * name;
ArchRegister * ar;
/* value */
if(AO_GET_TYPE(instruction->op1) != AOT_IMMEDIATE)
return -1;
value = (call->operands[0].value.immediate.value >> 10);
/* rd */
if(AO_GET_TYPE(instruction->op2) != AOT_REGISTER)
return -1;
name = call->operands[1].value._register.name;
if((ar = helper->get_register_by_name_size(helper->arch,
name, 32)) == NULL)
return -1;
rd = (ar->id << 25);
*opcode |= (rd | value);
return 0;
}

2
test/sparc.S
View File

@ -48,7 +48,7 @@
sdiv %r29, -$23, %r19 sdiv %r29, -$23, %r19
sdivcc %r16, %r26, %r27 sdivcc %r16, %r26, %r27
sdivcc %r29, -$23, %r19 sdivcc %r29, -$23, %r19
sethi $0x87654321, %r2 sethi $0x87654321, %r2 /* 0x0521d950 */
smul %r16, %r26, %r27 smul %r16, %r26, %r27
smul %r29, -$23, %r19 smul %r29, -$23, %r19
smulcc %r16, %r26, %r27 smulcc %r16, %r26, %r27