summaryrefslogtreecommitdiff
path: root/doc
diff options
context:
space:
mode:
authorFrank Kotler <fbkotler@users.sourceforge.net>2003-12-12 07:54:15 +0000
committerFrank Kotler <fbkotler@users.sourceforge.net>2003-12-12 07:54:15 +0000
commit6f7a5a60dca4ae56116aa5fcc61ba271b5df540c (patch)
treeff7f31b87e1fbf161f39c6a7602c58ca8c2b60d1 /doc
parentb4a1735c47570183b9ba6746a1e0b11a0e29513f (diff)
downloadnasm-6f7a5a60dca4ae56116aa5fcc61ba271b5df540c.tar.gz
Touch up docs
Diffstat (limited to 'doc')
-rw-r--r--doc/nasmdoc.src50
1 files changed, 25 insertions, 25 deletions
diff --git a/doc/nasmdoc.src b/doc/nasmdoc.src
index 0c61fc1f..588e2956 100644
--- a/doc/nasmdoc.src
+++ b/doc/nasmdoc.src
@@ -2920,7 +2920,8 @@ refer to the last unmatched \c{if} or \c{else}.
NASM defines a set of standard macros, which are already defined
when it starts to process any source file. If you really need a
program to be assembled with no pre-defined macros, you can use the
-\i\c{%clear} directive to empty the preprocessor of everything.
+\i\c{%clear} directive to empty the preprocessor of everything but
+context-local preprocessor variables and single-line macros.
Most \i{user-level assembler directives} (see \k{directive}) are
implemented as macros which invoke primitive directives; these are
@@ -7098,12 +7099,12 @@ flag, use \c{ADD} (\k{insADD}).
\c ADD reg16,r/m16 ; o16 03 /r [8086]
\c ADD reg32,r/m32 ; o32 03 /r [386]
-\c ADD r/m8,imm8 ; 80 /0 ib [8086]
-\c ADD r/m16,imm16 ; o16 81 /0 iw [8086]
-\c ADD r/m32,imm32 ; o32 81 /0 id [386]
+\c ADD r/m8,imm8 ; 80 /7 ib [8086]
+\c ADD r/m16,imm16 ; o16 81 /7 iw [8086]
+\c ADD r/m32,imm32 ; o32 81 /7 id [386]
-\c ADD r/m16,imm8 ; o16 83 /0 ib [8086]
-\c ADD r/m32,imm8 ; o32 83 /0 ib [386]
+\c ADD r/m16,imm8 ; o16 83 /7 ib [8086]
+\c ADD r/m32,imm8 ; o32 83 /7 ib [386]
\c ADD AL,imm8 ; 04 ib [8086]
\c ADD AX,imm16 ; o16 05 iw [8086]
@@ -7536,12 +7537,12 @@ conditional moves are supported.
\c CMP reg16,r/m16 ; o16 3B /r [8086]
\c CMP reg32,r/m32 ; o32 3B /r [386]
-\c CMP r/m8,imm8 ; 80 /0 ib [8086]
-\c CMP r/m16,imm16 ; o16 81 /0 iw [8086]
-\c CMP r/m32,imm32 ; o32 81 /0 id [386]
+\c CMP r/m8,imm8 ; 80 /7 ib [8086]
+\c CMP r/m16,imm16 ; o16 81 /7 iw [8086]
+\c CMP r/m32,imm32 ; o32 81 /7 id [386]
-\c CMP r/m16,imm8 ; o16 83 /0 ib [8086]
-\c CMP r/m32,imm8 ; o32 83 /0 ib [386]
+\c CMP r/m16,imm8 ; o16 83 /7 ib [8086]
+\c CMP r/m32,imm8 ; o32 83 /7 ib [386]
\c CMP AL,imm8 ; 3C ib [8086]
\c CMP AX,imm16 ; o16 3D iw [8086]
@@ -8643,8 +8644,8 @@ to finish what it was doing first.
\c FDIV TO fpureg ; DC F8+r [8086,FPU]
\c FDIV fpureg,ST0 ; DC F8+r [8086,FPU]
-\c FDIVR mem32 ; D8 /0 [8086,FPU]
-\c FDIVR mem64 ; DC /0 [8086,FPU]
+\c FDIVR mem32 ; D8 /7 [8086,FPU]
+\c FDIVR mem64 ; DC /7 [8086,FPU]
\c FDIVR fpureg ; D8 F8+r [8086,FPU]
\c FDIVR ST0,fpureg ; D8 F8+r [8086,FPU]
@@ -11895,12 +11896,11 @@ See also \c{POPA} (\k{insPOPA}).
\c PUSHFD ; o32 9C [386]
\c PUSHFW ; o16 9C [8086]
-\b \c{PUSHFW} pops a word from the stack and stores it in the
-bottom 16 bits of the flags register (or the whole flags register,
-on processors below a 386).
+\b \c{PUSHFW} pushes the bottom 16 bits of the flags register
+(or the whole flags register, on processors below a 386) onto
+the stack.
-\b \c{PUSHFD} pops a doubleword and stores it in the entire flags
-register.
+\b \c{PUSHFD} pushes the entire flags register onto the stack.
\c{PUSHF} is an alias mnemonic for either \c{PUSHFW} or \c{PUSHFD},
depending on the current \c{BITS} setting.
@@ -12457,9 +12457,9 @@ processors (Cyrix, IBM, Via).
the Machine Status Word, on 286 processors) into the destination
operand. See also \c{LMSW} (\k{insLMSW}).
-For 32-bit code, this would use the low 16-bits of the specified
-register (or a 16bit memory location), without needing an operand
-size override byte.
+For 32-bit code, this would store all of \c{CR0} in the specified
+register (or the bottom 16 bits if the destination is a memory location),
+ without needing an operand size override byte.
\S{insSQRTPD} \i\c{SQRTPD}: Packed Double-Precision FP Square Root
@@ -12564,10 +12564,10 @@ The \c{REP} prefix may be used to repeat the instruction \c{CX} (or
\c STR r/m16 ; 0F 00 /1 [286,PRIV]
\c{STR} stores the segment selector corresponding to the contents of
-the Task Register into its operand. When the operand size is a 16-bit
-register, the upper 16-bits are cleared to 0s. When the destination
-operand is a memory location, 16 bits are written regardless of the
-operand size.
+the Task Register into its operand. When the operand size is 32 bit and
+the destination is a register, the upper 16-bits are cleared to 0s.
+When the destination operand is a memory location, 16 bits are
+written regardless of the operand size.
\S{insSUB} \i\c{SUB}: Subtract Integers