#define bytes a2
#define flags a3
-#define SIZEOF_FRAME ( 4 * FFI_SIZEOF_ARG + 2 * FFI_SIZEOF_ARG )
+#define SIZEOF_FRAME (4 * FFI_SIZEOF_ARG + 2 * FFI_SIZEOF_ARG)
+#define A3_OFF (SIZEOF_FRAME + 3 * FFI_SIZEOF_ARG)
+#define FP_OFF (SIZEOF_FRAME - 2 * FFI_SIZEOF_ARG)
+#define RA_OFF (SIZEOF_FRAME - 1 * FFI_SIZEOF_ARG)
.abicalls
.text
ffi_call_O32:
$LFB0:
# Prologue
- SUBU $sp, SIZEOF_FRAME # Frame size
+ SUBU $sp, SIZEOF_FRAME # Frame size
$LCFI0:
- REG_S $fp, SIZEOF_FRAME - 2*FFI_SIZEOF_ARG($sp) # Save frame pointer
+ REG_S $fp, FP_OFF($sp) # Save frame pointer
$LCFI1:
- REG_S ra, SIZEOF_FRAME - 1*FFI_SIZEOF_ARG($sp) # Save return address
+ REG_S ra, RA_OFF($sp) # Save return address
$LCFI2:
move $fp, $sp
$LCFI3:
- move t9, callback # callback function pointer
- REG_S flags, SIZEOF_FRAME + 3*FFI_SIZEOF_ARG($fp) # flags
+ move t9, callback # callback function pointer
+ REG_S flags, A3_OFF($fp) # flags
# Allocate at least 4 words in the argstack
- move v0, bytes
- bge bytes, 4 * FFI_SIZEOF_ARG, bigger
LI v0, 4 * FFI_SIZEOF_ARG
- b sixteen
+ blt bytes, v0, sixteen
-bigger:
- ADDU t0, v0, 2 * FFI_SIZEOF_ARG -1 # make sure it is aligned
- and v0, t0, -2 * FFI_SIZEOF_ARG # to an 8 byte boundry
+ ADDU v0, bytes, 7 # make sure it is aligned
+ and v0, -8 # to an 8 byte boundry
sixteen:
- SUBU $sp, $sp, v0 # move the stack pointer to reflect the
+ SUBU $sp, v0 # move the stack pointer to reflect the
# arg space
ADDU a0, $sp, 4 * FFI_SIZEOF_ARG
- ADDU a3, $fp, SIZEOF_FRAME + 3*FFI_SIZEOF_ARG
jalr t9
- REG_L t0, SIZEOF_FRAME + 3*FFI_SIZEOF_ARG($fp) # load the flags word
- add t2, t0, 0 # and copy it into t2
-
+ REG_L t0, A3_OFF($fp) # load the flags word
+ SRL t2, t0, 4 # shift our arg info
and t0, ((1<<4)-1) # mask out the return type
- SRL t2, 4 # shift our arg info
- ADDU $sp, $sp, 4 * FFI_SIZEOF_ARG # adjust $sp to new args
+ ADDU $sp, 4 * FFI_SIZEOF_ARG # adjust $sp to new args
bnez t0, pass_d # make it quick for int
- REG_L a0, 0*FFI_SIZEOF_ARG($sp) # just go ahead and load the
- REG_L a1, 1*FFI_SIZEOF_ARG($sp) # four regs.
+ REG_L a0, 0*FFI_SIZEOF_ARG($sp) # just go ahead and load the
+ REG_L a1, 1*FFI_SIZEOF_ARG($sp) # four regs.
REG_L a2, 2*FFI_SIZEOF_ARG($sp)
REG_L a3, 3*FFI_SIZEOF_ARG($sp)
b call_it
# Epilogue
epilogue:
move $sp, $fp
- REG_L $fp, SIZEOF_FRAME - 2*FFI_SIZEOF_ARG($sp) # Restore frame pointer
- REG_L ra, SIZEOF_FRAME - 1*FFI_SIZEOF_ARG($sp) # Restore return address
- ADDU $sp, SIZEOF_FRAME # Fix stack pointer
+ REG_L $fp, FP_OFF($sp) # Restore frame pointer
+ REG_L ra, RA_OFF($sp) # Restore return address
+ ADDU $sp, SIZEOF_FRAME # Fix stack pointer
j ra
$LFE0:
0 - Called function a0 save our sp, fp point here
*/
-#define SIZEOF_FRAME2 ( 14 * FFI_SIZEOF_ARG )
+#define SIZEOF_FRAME2 (14 * FFI_SIZEOF_ARG)
+#define A3_OFF2 (SIZEOF_FRAME2 + 3 * FFI_SIZEOF_ARG)
+#define A2_OFF2 (SIZEOF_FRAME2 + 2 * FFI_SIZEOF_ARG)
+#define A1_OFF2 (SIZEOF_FRAME2 + 1 * FFI_SIZEOF_ARG)
+#define A0_OFF2 (SIZEOF_FRAME2 + 0 * FFI_SIZEOF_ARG)
+#define RA_OFF2 (SIZEOF_FRAME2 - 1 * FFI_SIZEOF_ARG)
+#define FP_OFF2 (SIZEOF_FRAME2 - 2 * FFI_SIZEOF_ARG)
+#define S0_OFF2 (SIZEOF_FRAME2 - 3 * FFI_SIZEOF_ARG)
+#define GP_OFF2 (SIZEOF_FRAME2 - 4 * FFI_SIZEOF_ARG)
+#define V1_OFF2 (SIZEOF_FRAME2 - 5 * FFI_SIZEOF_ARG)
+#define V0_OFF2 (SIZEOF_FRAME2 - 6 * FFI_SIZEOF_ARG)
+#define FA_1_1_OFF2 (SIZEOF_FRAME2 - 7 * FFI_SIZEOF_ARG)
+#define FA_1_0_OFF2 (SIZEOF_FRAME2 - 8 * FFI_SIZEOF_ARG)
+#define FA_0_1_OFF2 (SIZEOF_FRAME2 - 9 * FFI_SIZEOF_ARG)
+#define FA_0_0_OFF2 (SIZEOF_FRAME2 - 10 * FFI_SIZEOF_ARG)
.text
.align 2
ffi_closure_O32:
$LFB1:
# Prologue
- .frame $fp, SIZEOF_FRAME2, $31
+ .frame $fp, SIZEOF_FRAME2, ra
.set noreorder
- .cpload $25
+ .cpload t9
.set reorder
SUBU $sp, SIZEOF_FRAME2
- .cprestore SIZEOF_FRAME2 - 4*FFI_SIZEOF_ARG
+ .cprestore GP_OFF2
$LCFI4:
- REG_S $16, SIZEOF_FRAME2 - 3*FFI_SIZEOF_ARG($sp) # Save s0
- REG_S $fp, SIZEOF_FRAME2 - 2*FFI_SIZEOF_ARG($sp) # Save frame pointer
- REG_S ra, SIZEOF_FRAME2 - 1*FFI_SIZEOF_ARG($sp) # Save return address
+ REG_S $16, S0_OFF2($sp) # Save s0
+ REG_S $fp, FP_OFF2($sp) # Save frame pointer
+ REG_S ra, RA_OFF2($sp) # Save return address
$LCFI6:
move $fp, $sp
$LCFI7:
# Store all possible argument registers. If there are more than
- # four arguments, then they should be stored above where we put $7.
- REG_S $4, SIZEOF_FRAME2 + 0*FFI_SIZEOF_ARG($fp)
- REG_S $5, SIZEOF_FRAME2 + 1*FFI_SIZEOF_ARG($fp)
- REG_S $6, SIZEOF_FRAME2 + 2*FFI_SIZEOF_ARG($fp)
- REG_S $7, SIZEOF_FRAME2 + 3*FFI_SIZEOF_ARG($fp)
+ # four arguments, then they are stored above where we put a3.
+ REG_S a0, A0_OFF2($fp)
+ REG_S a1, A1_OFF2($fp)
+ REG_S a2, A2_OFF2($fp)
+ REG_S a3, A3_OFF2($fp)
- # Load ABI enum to $16
+ # Load ABI enum to s0
REG_L $16, 20($8) # cif pointer follows tramp.
REG_L $16, 0($16) # abi is first member.
bne $16, $13, 1f # Skip fp save if FFI_O32_SOFT_FLOAT
# Store all possible float/double registers.
- s.d $f12, SIZEOF_FRAME2 - 10*FFI_SIZEOF_ARG($fp)
- s.d $f14, SIZEOF_FRAME2 - 8*FFI_SIZEOF_ARG($fp)
+ s.d $f12, FA_0_0_OFF2($fp)
+ s.d $f14, FA_1_0_OFF2($fp)
1:
# Call ffi_closure_mips_inner_O32 to do the work.
- la $25, ffi_closure_mips_inner_O32
- move $4, $8 # Pointer to the ffi_closure
- addu $5, $fp, SIZEOF_FRAME2 - 6*FFI_SIZEOF_ARG
- addu $6, $fp, SIZEOF_FRAME2 + 0*FFI_SIZEOF_ARG
- addu $7, $fp, SIZEOF_FRAME2 - 10*FFI_SIZEOF_ARG
- jalr $31, $25
+ la t9, ffi_closure_mips_inner_O32
+ move a0, $8 # Pointer to the ffi_closure
+ addu a1, $fp, V0_OFF2
+ addu a2, $fp, A0_OFF2
+ addu a3, $fp, FA_0_0_OFF2
+ jalr t9
# Load the return value into the appropriate register.
move $8, $2
bne $16, $13, 1f # Skip fp restore if FFI_O32_SOFT_FLOAT
li $9, FFI_TYPE_FLOAT
- l.s $f0, SIZEOF_FRAME2 - 6*FFI_SIZEOF_ARG($fp)
+ l.s $f0, V0_OFF2($fp)
beq $8, $9, closure_done
li $9, FFI_TYPE_DOUBLE
- l.d $f0, SIZEOF_FRAME2 - 6*FFI_SIZEOF_ARG($fp)
+ l.d $f0, V0_OFF2($fp)
beq $8, $9, closure_done
1:
- li $9, FFI_TYPE_SINT64
- REG_L $3, SIZEOF_FRAME2 - 5*FFI_SIZEOF_ARG($fp)
- beq $8, $9, integer
- li $9, FFI_TYPE_UINT64
- beq $8, $9, integer
-
-integer:
- REG_L $2, SIZEOF_FRAME2 - 6*FFI_SIZEOF_ARG($fp)
+ REG_L $3, V1_OFF2($fp)
+ REG_L $2, V0_OFF2($fp)
closure_done:
# Epilogue
move $sp, $fp
- REG_L $16, SIZEOF_FRAME2 - 3*FFI_SIZEOF_ARG($sp) # Restore s0
- REG_L $fp, SIZEOF_FRAME2 - 2*FFI_SIZEOF_ARG($sp) # Restore frame pointer
- REG_L ra, SIZEOF_FRAME2 - 1*FFI_SIZEOF_ARG($sp) # Restore return address
+ REG_L $16, S0_OFF2($sp) # Restore s0
+ REG_L $fp, FP_OFF2($sp) # Restore frame pointer
+ REG_L ra, RA_OFF2($sp) # Restore return address
ADDU $sp, SIZEOF_FRAME2
j ra
$LFE1:
OSDN Git Service
