diff options
Diffstat (limited to 'gcc/config/pdp11/pdp11.h')
| -rw-r--r-- | gcc/config/pdp11/pdp11.h | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/gcc/config/pdp11/pdp11.h b/gcc/config/pdp11/pdp11.h index 6c8e045..f6997b6 100644 --- a/gcc/config/pdp11/pdp11.h +++ b/gcc/config/pdp11/pdp11.h @@ -69,7 +69,7 @@ along with GCC; see the file COPYING3. If not see #define SHORT_TYPE_SIZE 16 #define INT_TYPE_SIZE (TARGET_INT16 ? 16 : 32) #define LONG_TYPE_SIZE 32 -#define LONG_LONG_TYPE_SIZE 64 +#define LONG_LONG_TYPE_SIZE 64 /* machine types from ansi */ #define SIZE_TYPE "short unsigned int" /* definition of size_t */ @@ -93,7 +93,7 @@ along with GCC; see the file COPYING3. If not see /* Define that floats are in VAX order, not high word first as for ints. */ #define FLOAT_WORDS_BIG_ENDIAN 0 -/* Width of a word, in units (bytes). +/* Width of a word, in units (bytes). UNITS OR BYTES - seems like units */ #define UNITS_PER_WORD 2 @@ -107,7 +107,7 @@ extern const struct real_format pdp11_f_format; extern const struct real_format pdp11_d_format; /* Maximum sized of reasonable data type -- DImode ...*/ -#define MAX_FIXED_MODE_SIZE 64 +#define MAX_FIXED_MODE_SIZE 64 /* Allocation boundary (in *bits*) for storing pointers in memory. */ #define POINTER_BOUNDARY 16 @@ -144,7 +144,7 @@ extern const struct real_format pdp11_d_format; All registers that the compiler knows about must be given numbers, even those that are not normally considered general registers. - we have 8 integer registers, plus 6 float + we have 8 integer registers, plus 6 float (don't use scratch float !) */ /* 1 for registers that have pervasive standard uses @@ -153,7 +153,7 @@ extern const struct real_format pdp11_d_format; On the pdp, these are: Reg 7 = pc; reg 6 = sp; - reg 5 = fp; not necessarily! + reg 5 = fp; not necessarily! */ #define FIXED_REGISTERS \ @@ -203,7 +203,7 @@ extern const struct real_format pdp11_d_format; For any two classes, it is very desirable that there be another class that represents their union. */ - + /* The pdp has a couple of classes: MUL_REGS are used for odd numbered regs, to use in 16-bit multiplication @@ -211,7 +211,7 @@ MUL_REGS are used for odd numbered regs, to use in 16-bit multiplication GENERAL_REGS is all cpu LOAD_FPU_REGS is the first four cpu regs, they are easier to load NO_LOAD_FPU_REGS is ac4 and ac5, currently - difficult to load them -FPU_REGS is all fpu regs +FPU_REGS is all fpu regs CC_REGS is the condition codes (CPU and FPU) */ @@ -292,7 +292,7 @@ enum reg_class /* Return TRUE if the class is a CPU register. */ #define CPU_REG_CLASS(CLASS) \ (CLASS >= NOTR0_REG && CLASS <= GENERAL_REGS) - + /* Return the maximum number of consecutive registers needed to represent mode MODE in a register of class CLASS. */ #define CLASS_MAX_NREGS(CLASS, MODE) \ @@ -316,7 +316,7 @@ enum reg_class #define PUSH_ROUNDING(BYTES) pdp11_push_rounding (BYTES) -/* current_first_parm_offset stores the # of registers pushed on the +/* current_first_parm_offset stores the # of registers pushed on the stack */ extern int current_first_parm_offset; @@ -328,7 +328,7 @@ extern int current_first_parm_offset; If the precise function being called is known, FUNC is its FUNCTION_DECL; otherwise, FUNC is 0. */ #define BASE_RETURN_VALUE_REG(MODE) \ - (FLOAT_MODE_P (MODE) ? AC0_REGNUM : RETVAL_REGNUM) + (FLOAT_MODE_P (MODE) ? AC0_REGNUM : RETVAL_REGNUM) /* 1 if N is a possible register number for function argument passing. - not used on pdp */ @@ -462,7 +462,7 @@ extern int current_first_parm_offset; #define DEFAULT_SIGNED_CHAR 1 /* Max number of bytes we can move from memory to memory - in one reasonably fast instruction. + in one reasonably fast instruction. */ #define MOVE_MAX 2 |