diff options
Diffstat (limited to 'gcc/config/s390/s390.h')
| -rw-r--r-- | gcc/config/s390/s390.h | 63 |
1 files changed, 29 insertions, 34 deletions
diff --git a/gcc/config/s390/s390.h b/gcc/config/s390/s390.h index 694dcb8..a3e021c 100644 --- a/gcc/config/s390/s390.h +++ b/gcc/config/s390/s390.h @@ -60,8 +60,6 @@ extern enum processor_type s390_arch; extern enum processor_flags s390_arch_flags; extern const char *s390_arch_string; -extern const char *s390_backchain_string; - extern const char *s390_warn_framesize_string; extern const char *s390_warn_dynamicstack_string; extern const char *s390_stack_size_string; @@ -106,6 +104,8 @@ extern int target_flags; #define MASK_MVCLE 0x40 #define MASK_TPF_PROFILING 0x80 #define MASK_NO_FUSED_MADD 0x100 +#define MASK_BACKCHAIN 0x200 +#define MASK_PACKED_STACK 0x400 #define TARGET_HARD_FLOAT (target_flags & MASK_HARD_FLOAT) #define TARGET_SOFT_FLOAT (!(target_flags & MASK_HARD_FLOAT)) @@ -117,9 +117,8 @@ extern int target_flags; #define TARGET_TPF_PROFILING (target_flags & MASK_TPF_PROFILING) #define TARGET_NO_FUSED_MADD (target_flags & MASK_NO_FUSED_MADD) #define TARGET_FUSED_MADD (! TARGET_NO_FUSED_MADD) - -#define TARGET_BACKCHAIN (s390_backchain_string[0] == '1') -#define TARGET_KERNEL_BACKCHAIN (s390_backchain_string[0] == '2') +#define TARGET_BACKCHAIN (target_flags & MASK_BACKCHAIN) +#define TARGET_PACKED_STACK (target_flags & MASK_PACKED_STACK) /* ??? Once this actually works, it could be made a runtime option. */ #define TARGET_IBM_FLOAT 0 @@ -131,25 +130,27 @@ extern int target_flags; #define TARGET_DEFAULT MASK_HARD_FLOAT #endif -#define TARGET_DEFAULT_BACKCHAIN "" - -#define TARGET_SWITCHES \ -{ { "hard-float", 1, N_("Use hardware fp")}, \ - { "soft-float", -1, N_("Don't use hardware fp")}, \ - { "small-exec", 4, N_("Use bras for executable < 64k")}, \ - { "no-small-exec", -4, N_("Don't use bras")}, \ - { "debug", 8, N_("Additional debug prints")}, \ - { "no-debug", -8, N_("Don't print additional debug prints")}, \ - { "64", 16, N_("64 bit ABI")}, \ - { "31", -16, N_("31 bit ABI")}, \ - { "zarch", 32, N_("z/Architecture")}, \ - { "esa", -32, N_("ESA/390 architecture")}, \ - { "mvcle", 64, N_("mvcle use")}, \ - { "no-mvcle", -64, N_("mvc&ex")}, \ - { "tpf-trace", 128, N_("enable tpf OS tracing code")}, \ - { "no-tpf-trace", -128, N_("disable tpf OS tracing code")}, \ - { "no-fused-madd", 256, N_("disable fused multiply/add instructions")},\ - { "fused-madd", -256, N_("enable fused multiply/add instructions")}, \ +#define TARGET_SWITCHES \ +{ { "hard-float", 1, N_("Use hardware fp")}, \ + { "soft-float", -1, N_("Don't use hardware fp")}, \ + { "small-exec", 4, N_("Use bras for executable < 64k")}, \ + { "no-small-exec", -4, N_("Don't use bras")}, \ + { "debug", 8, N_("Additional debug prints")}, \ + { "no-debug", -8, N_("Don't print additional debug prints")}, \ + { "64", 16, N_("64 bit ABI")}, \ + { "31", -16, N_("31 bit ABI")}, \ + { "zarch", 32, N_("z/Architecture")}, \ + { "esa", -32, N_("ESA/390 architecture")}, \ + { "mvcle", 64, N_("mvcle use")}, \ + { "no-mvcle", -64, N_("mvc&ex")}, \ + { "tpf-trace", 128, N_("Enable tpf OS tracing code")}, \ + { "no-tpf-trace", -128, N_("Disable tpf OS tracing code")}, \ + { "no-fused-madd", 256, N_("Disable fused multiply/add instructions")},\ + { "fused-madd", -256, N_("Enable fused multiply/add instructions")}, \ + { "backchain", 512, N_("Maintain backchain pointer")}, \ + { "no-backchain", -512, N_("Don't maintain backchain pointer")}, \ + { "packed-stack", 1024, N_("Use packed stack layout")}, \ + { "no-packed-stack", -1024, N_("Don't use packed stack layout")}, \ { "", TARGET_DEFAULT, 0 } } #define TARGET_OPTIONS \ @@ -157,12 +158,6 @@ extern int target_flags; N_("Schedule code for given CPU"), 0}, \ { "arch=", &s390_arch_string, \ N_("Generate code for given CPU"), 0}, \ - { "backchain", &s390_backchain_string, \ - N_("Set backchain"), "1"}, \ - { "no-backchain", &s390_backchain_string, \ - N_("Do not set backchain"), ""}, \ - { "kernel-backchain", &s390_backchain_string, \ - N_("Set backchain appropriate for the linux kernel"), "2"}, \ { "warn-framesize=", &s390_warn_framesize_string, \ N_("Warn if a single function's framesize exceeds the given framesize"), \ 0}, \ @@ -623,12 +618,12 @@ extern int current_function_outgoing_args_size; the corresponding RETURN_REGNUM register was saved. */ #define DYNAMIC_CHAIN_ADDRESS(FRAME) \ - (TARGET_BACKCHAIN ? \ - ((FRAME) != hard_frame_pointer_rtx ? (FRAME) : \ - plus_constant (arg_pointer_rtx, -STACK_POINTER_OFFSET)) : \ + (TARGET_PACKED_STACK ? \ ((FRAME) != hard_frame_pointer_rtx ? \ plus_constant ((FRAME), STACK_POINTER_OFFSET - UNITS_PER_WORD) : \ - plus_constant (arg_pointer_rtx, -UNITS_PER_WORD))) + plus_constant (arg_pointer_rtx, -UNITS_PER_WORD)) : \ + ((FRAME) != hard_frame_pointer_rtx ? (FRAME) : \ + plus_constant (arg_pointer_rtx, -STACK_POINTER_OFFSET))) #define RETURN_ADDR_RTX(COUNT, FRAME) \ s390_return_addr_rtx ((COUNT), DYNAMIC_CHAIN_ADDRESS ((FRAME))) |