Add --help documentation for ARM specific command line switches

From-SVN: r23130

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6899cf828dde992294ce51e283b9cb1a761bff5a..0a2918802a6933e65ab49843978b09f5e8f7a221 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Fri Oct 16 10:47:53 1998  Nick Clifton  <nickc@cygnus.com>
+
+       * config/arm/arm.h (TARGET_SWITCHES): Add --help documentation.
+       (TARGET_OPTIONS): Add --help documentation.
+
 Fri Oct 16 11:49:01 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
        * rtl.h (sets_cc0_p): Revert Oct 14 ATTRIBUTE_NORETURN change.

diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h
index ed5e4de972907233c4b1bbba0b12594e0e364bf4..c9127e747cbd2c80ce95ca8a0f799dc831824df2 100644 (file)
--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
@@ -332,42 +332,42 @@ extern char *target_fp_name;
 #define TARGET_SWITCHES                                \
 {                                                      \
   {"apcs",                     ARM_FLAG_APCS_FRAME},   \
-  {"apcs-frame",               ARM_FLAG_APCS_FRAME},   \
+  {"apcs-frame",               ARM_FLAG_APCS_FRAME, "Generate APCS conformant stack frames" }, \
   {"no-apcs-frame",           -ARM_FLAG_APCS_FRAME},   \
   {"poke-function-name",       ARM_FLAG_POKE},         \
   {"fpe",                      ARM_FLAG_FPE},          \
   {"6",                                ARM_FLAG_ARM6},         \
   {"2",                                ARM_FLAG_ARM3},         \
   {"3",                                ARM_FLAG_ARM3},         \
-  {"apcs-32",                  ARM_FLAG_APCS_32},      \
-  {"apcs-26",                 -ARM_FLAG_APCS_32},      \
+  {"apcs-32",                  ARM_FLAG_APCS_32, "Use the 32bit version of the APCS" },        \
+  {"apcs-26",                 -ARM_FLAG_APCS_32, "Use the 26bit version of the APCS" },        \
   {"apcs-stack-check",         ARM_FLAG_APCS_STACK},   \
   {"no-apcs-stack-check",      -ARM_FLAG_APCS_STACK},  \
-  {"apcs-float",               ARM_FLAG_APCS_FLOAT},   \
+  {"apcs-float",               ARM_FLAG_APCS_FLOAT, "Pass FP arguments in FP registers" },     \
   {"no-apcs-float",           -ARM_FLAG_APCS_FLOAT},   \
-  {"apcs-reentrant",           ARM_FLAG_APCS_REENT},   \
+  {"apcs-reentrant",           ARM_FLAG_APCS_REENT, "Generate re-entrant, PIC code" }, \
   {"no-apcs-reentrant",               -ARM_FLAG_APCS_REENT},   \
-  {"short-load-bytes",         ARM_FLAG_SHORT_BYTE},   \
+  {"short-load-bytes",         ARM_FLAG_SHORT_BYTE, "Load shorts a byte at a time" },  \
   {"no-short-load-bytes",      -ARM_FLAG_SHORT_BYTE},  \
-  {"short-load-words",        -ARM_FLAG_SHORT_BYTE},   \
+  {"short-load-words",        -ARM_FLAG_SHORT_BYTE, "Load words a byte at a time" },   \
   {"no-short-load-words",      ARM_FLAG_SHORT_BYTE},   \
-  {"soft-float",               ARM_FLAG_SOFT_FLOAT},   \
-  {"hard-float",              -ARM_FLAG_SOFT_FLOAT},   \
-  {"big-endian",               ARM_FLAG_BIG_END},      \
-  {"little-endian",           -ARM_FLAG_BIG_END},      \
-  {"thumb-interwork",          ARM_FLAG_THUMB},        \
+  {"soft-float",               ARM_FLAG_SOFT_FLOAT, "Use library calls to perform FP operations" },    \
+  {"hard-float",              -ARM_FLAG_SOFT_FLOAT, "Use hardware floating point instructions" },      \
+  {"big-endian",               ARM_FLAG_BIG_END, "Assume target CPU is configured as big endian" },    \
+  {"little-endian",           -ARM_FLAG_BIG_END, "Assume target CPU is configured as little endian" }, \
+  {"words-little-endian",       ARM_FLAG_LITTLE_WORDS, "Assume big endian bytes, little endian words" },       \
+  {"thumb-interwork",          ARM_FLAG_THUMB, "Support calls between THUMB and ARM instructions sets" },      \
   {"no-thumb-interwork",       -ARM_FLAG_THUMB},       \
-  {"words-little-endian",       ARM_FLAG_LITTLE_WORDS},        \
   SUBTARGET_SWITCHES                                   \
   {"",                         TARGET_DEFAULT }        \
 }
 
 #define TARGET_OPTIONS                 \
 {                                      \
-  {"cpu=",  &arm_select[1].string},    \
-  {"arch=", &arm_select[2].string},    \
-  {"tune=", &arm_select[3].string},    \
-  {"fp=",   &target_fp_name}           \
+  {"cpu=",  & arm_select[1].string, "Specify the name of the target CPU" },    \
+  {"arch=", & arm_select[2].string, "Specify the name of the target architecture" }, \
+  {"tune=", & arm_select[3].string},   \
+  {"fp=",   & target_fp_name, "Specify the version of the floating point emulator"} \
 }
 
 /* arm_select[0] is reserved for the default cpu.  */