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forcing myself to move forward, need to address missing annotations for "name bindings" on allocated registers.

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ed
2026-07-05 21:26:26 -04:00
parent b1982ba862
commit 13a0b9dca4
5 changed files with 58 additions and 53 deletions
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code/duffle/gcc_asm.h
+6 -6
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@@ -66,14 +66,15 @@
* register V3_S2* p0 rgcc(R_T4) = ...; // bundled
*
* asm volatile("nop" : : : reg_str(R_RA), "memory"); // clobber list */
#define rlit_impl(n) "$" #n
#define rlit(n) rlit_impl(n)
#define rlit_stringfy(n) "$" stringify(n)
#define rlit_tmpl(n) rlit_stringfy(tmpl(n,Code))
#define rlit(n) rlit_tmpl(n)
/* ------------------------------------------------------------------------ *
* rgcc(n) — GCC-specific bundle for register-variable declarations.
*
* Produces `__asm__(reg_str(tmpl(n, MipsAtom)))` at expansion time.
* The `tmpl(n, MipsAtom)` indirection derives the preprocessor-visible `_Code`
* Produces `__asm__(reg_str(tmpl(n, MipsCode)))` at expansion time.
* The `tmpl(n, MipsCode)` indirection derives the preprocessor-visible `_Code`
* form from the enum name (which the preprocessor can't expand on its own).
* So a call is: register V3_S2* p rgcc(R_T4) = verts[0].ptr;
* expands (via tmpl) to: register V3_S2* p __asm__(rlit(R_T4_Code)) = verts[0].ptr;
@@ -91,8 +92,7 @@
*
* For clobber lists and asm-template strings, use the bare `rlit(R_T4_Code)`.
* ------------------------------------------------------------------------ */
#define rgcc_(n) __asm__(rlit(tmpl(n, Code)))
#define rgcc(n) rgcc_(n)
#define rgcc(n) __asm__(rlit(n))
/* rgcc_ref(n) — GCC operand-reference form "%N". Not currently used
* by the placeholder-pun macros (the .word bodies are fully baked