ack/mach/powerpc/as/mach1.c

/*
 * $Source$
 * $State$
 */

/*
 * Do not #include anything here.  Do it in mach/proto/as/comm0.h
 */

void no_hl(void);
word_t eval_hl(struct expr_t* expr, int token);
void emit_hl(word_t in);
Archival checkin (semi-working code). 2007-11-02 18:56:58 +00:00			`/*`
			`* $Source$`
			`* $State$`
			`*/`

Remove #include <stdbool.h> from mach/powerpc/as/mach1.c We should not include a system header file here, because mach/proto/as/comm2.y goes through cpp twice. The include can cause problems like https://github.com/davidgiven/ack/issues/1 Remove this include #<stdbool.h> and leave a comment pointing to the includes in comm0.h. Change the few instances of bool, false, true, to int, 0, 1. 2017-01-30 21:39:23 +00:00			`/*`
			`* Do not #include anything here. Do it in mach/proto/as/comm0.h`
			`*/`
Signed vs unsigned lower halves of powerpc fixups are now handled by having two assembler directives, ha16() and has16(), for the upper half; has16() applies the sign adjustment. .powerpcfixup is now gone, as we generate the relocation in ha*() instead. Add special logic to the linker for undoing and redoing the sign adjustment when reading/writing fixups. Tests still pass. 2017-01-15 10:51:37 +00:00
Add RELOLIS for PowerPC lis with ha16 or hi16. The new relocation type RELOLIS handles these instructions: lis RT, ha16[expr] == addis RT, r0, ha16[expr] lis RT, hi16[expr] == addis RT, r0, hi16[expr] RELOLIS stores a 32-bit value in the program text. In this value, the high bit is a ha16 flag, the next 5 bits are the target register RT, and the low bits are a signed 26-bit offset. The linker replaces this value with the lis instruction. The old RELOPPC relocated a ha16/lo16 or hi16/lo16 pair. The new RELOLIS relocates only a ha16 or hi16, so it is no longer necessary to have a matching lo16 in the next instruction. The disadvantage is that RELOLIS has only a signed 26-bit offset, not a 32-bit offset. Switch the assembler to use RELOLIS for ha16 or hi16 and RELO2 for lo16. The li32 instruction still uses the old RELOPPC relocation. This is not the same as my RELOPPC change from my recent mail to tack-devel (https://sourceforge.net/p/tack/mailman/message/35651528/). This commit is on a different branch. Here I am throwing away my RELOPPC change and instead trying RELOLIS. 2017-02-08 16:46:31 +00:00			`void no_hl(void);`
			`word_t eval_hl(struct expr_t* expr, int token);`
			`void emit_hl(word_t in);`